NC214: Increased Efficiency of Sheep Production

(Multistate Research Project)

Status: Active

SAES-422 Reports

09/23/2021

Publications


Rosales, C., R. Ehrhardt, A. Mantey, B. Makela, T. Byrem, A. Veiga-Lopez. 2020. Preconceptional diet manipulation can influence placenta endocrine function in sheep.  Domestic Animal Endocrinology 74: 1-13.


 


Posbergh, C.J. and Huson, H.J. (2021), All sheeps and sizes: a genetic investigation of mature body size across sheep breeds reveals a polygenic nature. Anim. Genet., 52: 99-107. https://doi.org/10.1111/age.13016


 


Salavati M, Caulton A, Clark R, Gazova I, Smith TPL. Worley KC, Cockett NE, Archablad AL, Clarke SM, Murdoch BM, Clark EL. on behalf of the Ovine FAANG Project Consortium. Global analysis of transcription start sites in the new ovine reference genome (Oar rambouillet v1.0). Frontiers in Genetics (2020).


 


Henslee D, Murdoch B, Yelich, Taylor BJ and Ellison M. Comparative genomics of sheep Tas2r repertoire in cattle, goat, human, dog and mice.  Animal Gene (2020) Oct 22.


 


Davenport KM, Hiemke C, McKay SD, Thorne JW, Lewis RM, Taylor T, Murdoch BM. Genetic structure and admixture from terminal breeds in the United States. Animal Genetics (2020) Jan 23.


 


Becker GM, Job RJ, Davenport KM, Burke JM, Lewis RM, Miller JE, Morgan JL, Notter DR, and Murdoch BM. Genome-wide association study to identify loci associated with gastrointestinal nematode resistance in Katahdin. Animal Genetics (2020) Jan 3.


 


Stewart, W. C., J. D. Scasta, J. B. Taylor, T. W. Murphy, and A. A. M. Julian. 2021. Invited review: Sheep mineral nutrition considerations for extensive production systems. App.                Anim. Sci. 37:256-272. doi:10.15232/aas.2021-02143


 


Knuth, R. M., W. C. Stewart, J. B. Taylor, B. Bisha, C. J. Yeoman, M. L. Van Emon, and T. W. Murphy. 2021. Relationships among intramammary health, udder and teat characteristics, and productivity of extensively managed ewes. J. Anim. Sci. (in press). doi:10.1093/jas/skab059


 


Stewart, W. C., D. M. Scott, S. B. Howell, R. M. Kaplan, B. L. Roeder, and T. W. Murphy. 2021. Anthelmintic resistance in gastrointestinal nematodes and associated management factors in Intermountain West sheep flocks. Sheep & Goat Res. J. (in press).


 


Stewart, W. C., T. W. Murphy, C. M. Page, D. C. Rule, J. B. Taylor. K. Austin, and C. Pankey. 2020. Effect of increasing dietary zinc sulfate fed to primiparous ewes: I Effects on serum metabolites, mineral transfer efficiency, and animal performance. Appl. Anim. Sci. 36:839-850. doi:10.15232/aas.2020-02057.


 



  1. McGregor, J. G. P. Bowman, C. M. Page, A. R. Hubbard, M. Manoukian, W. C. Stewart, and M. L. Van Emon. 2020. The effect of ensiling sugar beets on preservation characteristics, nutrient profile, and in situ disappearance. J. Agric. Studies. https://doi.org/10.5296/jas.v8i4.17165


 



  1. D. Scasta, T. Jorns, J. D. Derner, B. Stam, M. McClaren, Craig Calkins, W. C. Stewart. 2020. Technical Note: Toxic plants in sheep diets grazing extensive landscapes: Insights from Fecal DNA metabarcoding. Livestock Sci.


 


Acharya, M., Burke, J.M., Miller, J.E., Terrill, T.H., Wood, E.L., Muir, J.P., 2020.  Quebracho tannins aid in the control of Eimeria spp. in lambs and goat kids. Vet. Parasitol. 288, 1-8 (accepted October 23, 2020, published Dec 2020).


 


Chai, J., Alrashedi, S., Coffey, K., Burke, J., Feye, K., Ricke, S.C., Park, S.H., Edwards, J.L., Zhao, J., 2020. Endophyte-infected tall fescue affects rumen microbiome in grazing ewes at gestation and lactation. Front. Vet. Sci. 7, 1-13, Article 544707 (accepted 9/9/20, published 10/14/20).


 


Acharya, M., Burke, J.M., Ashworth, A.J., Rorie, R.W., 2020. Relationship of anti-Mullerian hormone to reproductive traits in Katahdin ewes bred in late spring or fall. Adv. Repro. Sci. 8, 48-56.


 


Burke, J.M., Miller, J.E. 2020. Sustainable approaches to parasite control in ruminant livestock. Vet. Clin. Food Anim. 36, 89-107.


 


Acharya, M., Burke, J.M., Rorie, R., 2020. Semen extension in Katahdin rams. Adv. Reprod. Sci. 8, 14-30.


 


Becker, G.M., Davenport, K.M., Burke, J.M., Lewis, R.M., Miller, J.E., Morgan, J.L., Notter, D.L., Murdoch, B.M., 2020. Genome-wide association study to identify genetic loci associated with gastrointestinal nematode resistance in Katahdin sheep. Anim. Gen. 51, 330-335. doi: 10.1111/age.12895.


 


Freking, B. A. and T. W. Murphy. 2020. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during spring lambing under intensive and extensive production systems. J. Anim. Sci. doi:10.1093/jas/skaa397.


 


Li, H., X. Wu, R. G. Tait Jr., S. Bauck, D. L. Thomas, T. W. Murphy, and G. J. M. Rosa. 2020. Genome-wide association study of milk production traits in a crossbred dairy sheep population using three statistical models. Anim. Genet. 51:624-628. doi:10.1111/age.12956.


 


Murphy, T. W., and B. A. Freking. 2020. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during fall lambing and body weight and longevity            through 6 production years. J. Anim. Sci. doi:10.1093/jas/skaa400.


 


Murphy, T. W., J. W. Keele, and B. A. Freking. 2020. Genetic and non-genetic factors influencing ewe prolificacy and lamb body weight in a closed Romanov flock. J. Anim. Sci. doi:10.1093/jas/skaa283.


 


Lonngren, K., Barone, C., Zajac, A., Brown, R., Reed, J, Krueger, C., Petersson, K. (2020) Effect of birdsfoot trefoil cultivars on exsheathment of Haemonchus contortus in fistulated sheep. Veterinary Parasitology 287:109271


Sanders, J., Xie, Y., Gazzola, D., Li, H., Abraham, A., Flanagan, K., Rus, F., Miller, M., Huc, Y., Guynn, S., Draper, A., Vakalapudi, S., Petersson, K., Zarlenga, D., Li, R., Urban Jr., J., Ostroff, G., Zajac, A., Aroian, R. (2020). A New Paraprobiotic-based Treatment for Control of Haemonchus contortus in Sheep. International Journal of Parasitology: Drugs and Drug Resistance 14:230-236.


 


Extension publications


 


Recktenwald, E.B and R. A. Ehrhardt.  2020. Methodology for evaluating the environmental footprint of four types of U.S. sheep operations.   Presented to the American Lamb Board.  November 2020.


 


Recktenwald, E.B and Ehrhardt, R.A. 2020.  Benefits and considerations in using terminal sires. Michigan Shepherd News


 


Ehrhardt, R.A. and B. Makela. 2020. “How to administer dewormer orally to sheep and goats.” Instructional video for MSU ANS 262 introductory sheep management and MSU Small ruminant extension parasite management program.


 


Ehrhardt, R.A. and B. Makela. 2020. “How to perform a quantitative fecal egg count.” Instructional video for MSU ANS 262 introductory sheep management and MSU Small ruminant extension parasite management program.


 


Ehrhardt, R.A. and B. Makela. 2020. “How to screen sheep and goats for parasite infection using the FAMACHA system.” Instructional video for MSU ANS 262 introductory sheep management and MSU Small ruminant extension parasite management program.


 



  1. O’Brien and S. Wildeus. 2020. Enhancing Reproductive Performance in Small Ruminants: Part II. Puberty and Estrous Cycles. http://digitalpubs.ext.vt.edu/vcedigitalpubs/9333817745874164/MobilePagedReplica.action?pm=2&folio=1#pg1


 


Ehrhardt, R.A.  “Application of ultrasound technology in the management of reproduction in small ruminants.” Webinar prepared for American Association of Small Ruminant Practitioners Webinar Series.  June 16, 2021.


 


Ehrhardt, R.A. “Nutritional management of ewes in late pregnancy to prevent metabolic disease.”  Webinar prepared for Centre d’expertise en production ovine du Québec (CEPOQ).  April 29, 2021.


 


Ehrhardt, R.A. and Thorne, J “Winter Ewe Nutrition Podcast”.  American Sheep Industry Podcast series.  Feb. 16, 2021. 


 


Ehrhardt, R.A. “Managing coccidiosis.” Webinar prepared for the Ontario Master Shepherd course.  Jan. 21, 2021.


 


Ehrhardt, R.A.  “Ovine Progressive Pneumonia Eradication in 2020: What has worked and has it been worth it?  Michigan Shepherds Weekend. January 10, 2021.


 


Ehrhardt, R.A. and K. Cassida.   “Cover crop grazing with sheep in Michigan: Results of a 2-year study.  Part 1: Cover crop choices and management options.” Michigan Shepherds Weekend. January 10, 2021.


 



  1. Macaluso, K. Cassida and R. A. Ehrhardt, “Cover crop grazing with sheep production in Michigan. Part 2: Lamb performance and carcass quality on cover crop grazing systems.” Michigan Shepherds Weekend. January 10, 2021.


 


E.B. Recktenwald and R.A. Ehrhardt “Evaluating the environmental footprint of US lamb production: Why it matters and opportunities for improvement.” Michigan Shepherds Weekend. January 10, 2021.


 


Ehrhardt, R.A. “Grazing cover crops.”  Cover Crop Strategies Magazine Podcast.  December 2020.


 


Ehrhardt, R.A.  “Strategic nutritional management to optimize reproductive success in sheep.   Sheep and Goat Webinar Series from the University of Idaho and the University of Wyoming.  September 24, 2020.


 


Ehrhardt, R.A. “Grazing annuals as part of a crop/pasture rotation or as cover crops with sheep.”  Missouri sheep and goat conference.   Sept. 18, 2020.


 


Ehrhardt, R.A.  “Optimizing forage and grazing management for small ruminant health and productivity.  American Association of Small Ruminant Practitioners (AASRP) Webinar series.  Sept. 9, 2020.


 


Recktenwald, E. and R. Ehrhardt “Evaluating the environmental footprint of the US sheep industry.”  Presentation to the American Lamb Board Summer Meeting.  July 20, 2020.


 


Ehrhardt, R.A.   “Lamb production: providing a year-round supply of lamb with accelerated lambing.”  University of Georgia Extension Small Ruminant Webinar, June 9, 2020.


 


Ehrhardt, R.A. “Strategies to manage forage quality limitation when feeding sheep and goats.” 2020 Purdue University and University of Kentucky sheep and goat education series. Jan 2020. https://ag.purdue.edu/ansc/sheep-site/Pages/SheepVidArchives.aspx   https://www.youtube.com/watch?v=TD4Mzn_q-Iw


 

08/22/2022

Peer-reviewed publications & meeting abstracts


Acharya, R.S., Burke, J.M., Leslie, T., Loftin, K., Joshi, N., 2022. Wild bees respond differently to sampling traps with vanes of different colors and light reflectivity in a livestock pasture ecosystem. Sci. Rep. (Nature). (In Press)


Acharya, M., Burke, J.M., Wood, E., Huang, Y., Morse, P.D., Coffey, K., Edwards, J.L., Rosenkrans, C., 2021. Changes in cytochrome P450 in Katahdin ewes fed endophyte-infected tall fescue seed diets in spring and fall. J. Anim. Sci. 99 (Suppl. 2), 40-41 (Abstr.).


Acharya, R.S., Leslie, T., Fitting, E., Burke, J.M., Loftin, K., Joshi, N., 2021. Color of trap influences sampling of bees and other insects in livestock pasture ecosystem. Biology 10, 445. https://doi.org/10.3390/ biology10050445.


Acharya-Sharma, R., Burke, J., Leslie, T.W., Loftin, K., Joshi, N., 2021. Wild bees respond differently to passive sampling traps with vanes of different colors and light reflectivity in a livestock pasture ecosystem. Entomol. Soc. Amer.


Arisman, B.C., Burke, J.M., Morgan, J.L.M., Lewis, R.M., 2022. Quantification of environmental management systems for U.S. Katahdin sheep producers. World Cong. Genet. Appl. Livest. Prod., Rotterdam, The Netherlands, July 2022.


Becker, G.M., Burke, J.M., Lewis, R.M., Miller, J.E., Morgan, J.L.M., Notter, D.R., Murdoch, B.M., 2021. DEL-1 gene is associated with increased weaning fecal egg counts in Katahdin sheep. Int. Soc. Anim. Gen. (ISAG) Conf., July 2021.


Becker, G.M., Burke, J.M., Lewis, R.M., Miller, J.E., Morgan, J.L.M., Rosen, B.D., Van Tassell, C.P., Notter, D.R., Murdoch, B.M., 2022. Variants within genes EDIL3 and ADGRB3 are associated with divergent fecal egg counts in Katahdin sheep at weaning. Front. Genet. 13, Art. 817319; doi: 10.3389/fgene.2022.817319.


Becker, G.M., Burke, J.M., Lewis, R.M., Miller, J.E., Morgan, J.L.M., Rosen, B.D., Van Tassell, C.P., Notter, D.R., Murdoch, B.M., 2022. Genome-wide association study identifies genetic variants within gene edil3 associated with increased weaning fecal egg counts in Katahdin sheep. Plant and Animal Genome XXIX Conference (January 8-12, 2022), San Diego, CA.


Brown, K., S. Wildeus, D. O’Brien. 2022. Effect of cooling rate on sperm motion characteristics of ram semen during liquid storage at two temperatures. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 232


Burke, J.M., Wood, E.L., Miller, J.E., 2021. Season of lambing influences dynamics of gastrointestinal nematode infection of lambs in Arkansas, USA. WAAVP Conference, Dublin, Ireland, July 2021.


Burke, J.M., Wood, E.L., Miller, J.E., 2021. Influence of season of lambing on gastrointestinal nematode (GIN) infection of lambs. J. Anim. Sci. 99 (Suppl. 2), 39 (Abstr.).


Burke, J.M., Miller, J.E., 2021. Multi-species grazing for control of gastrointestinal nematodes – A review. J. Anim. Sci. 99 (Suppl. 2), 36-37 (Abstr.).


Callendar, M., S. Wildeus, D. O’Brien. 2022. Growth, libido and ejaculate characteristics in post-pubertal hair sheep rams rendered short-scrotum at birth and weaning. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 232


Freking, B. A. and T. W. Murphy. 2021. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during spring lambing under intensive and extensive production systems. J. Anim. Sci. doi:10.1093/jas/skaa397.


Griffin, C., S. Wildeus, D. O’Brien. 2022. Retention of ram sperm motility during liquid storage in different types of shipping containers.  Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 66


Knuth, R. M., W. C. Stewart, J. B. Taylor, B. Bisha, C. J. Yeoman, M. L. Van Emon, and T. W. Murphy. 2021. Relationships among intramammary health, udder and teat characteristics, and productivity of extensively ewes. J. Anim. Sci. doi:10.1093/jas/skab059


Kochendoerfer N.*, Shepherd. S.J., Posbergh C.J., Huson H.J., Barbano D.M., Thonney, M.L. 2022. Genetic make-up, milk production, and infrared predicted milk constituents in a commercial dairy sheep flock of variable breed composition. Sheep & Goat Research Journal


Maierle, C.L., A.R. Weaver, E.E. Felton, S.P. Greiner, S.A. Bowdridge. 2021. Impact of H. contortus on feed intake in Katahdin sheep selected for parasite resistance.


McCoski, S., A. Bradbery, R. d. S. Marques, C. Posbergh, and C. Sanford. 2021. Maternal Nutrition and Developmental Programming of Male Progeny. Animals 11(8):2216.


McMillan, A.J., Brown, D.J., Burke, J.M., Morgan, J.L., Lewis, R.M., 2022. Cross-validation of single-step genetic evaluation in U.S. Katahdin sheep. World Cong. Genet. Appl. Livest. Prod., Rotterdam, The Netherlands, July 2022.


Miller, J.E., Burke, J.M., Terrill, T.H., 2021. BioWorma as an aid for controlling ruminant nematode parasites. J. Anim. Sci. 99 (Suppl. 2), 36 (Abstr.).


Murphy, T. W., C. G. Chitko-McKown, M. P. Heaton, and B. A. Freking. 2021. Effect of TMEM154 E35K variant (haplotypes 1 and 3) on the incidence of ovine lentivirus infection and ewe productivity during lifetime exposure. J. Anim. Sci. (in press). doi:10.1093/jas/skab304


Murphy, T. W. and B. A. Freking. 2021. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during fall lambing and body weight and longevity through 6 production years. J. Anim. Sci. doi:10.1093/jas/skaa400.


Murphy, T. W. 2022. Genetic approaches to improve reproductive performance in the U.S. sheep industry. Am. Soc. Anim. Sci. Ann. Meeting.


Murphy, T. W. and S. Wildeus. 2021. Breed and mating season effects on gestation length in landrace hair sheep ewes. Southern Sec. Am. Soc. Anim. Sci. Ann. Meeting.


Murphy, T. W. and J. B. Taylor. 2021. The relationship between milk score near parturition and udder score near weaning and their effects on Polypay, Rambouillet, and Targhee ewe productivity. Trans. Anim. Sci. (in press).


Murphy, T. and S. Wildeus. 2022.  Breed and mating season effects on gestation length in landrace hair sheep ewes. J. Anim. Sci Vol. 100:43, Suppl. S1


Notter, D.R., Heidaritabar, M., Burke, J.M., Shirali, M., Murdoch, B.M., Morgan, J.L.M., Morota, G., Sonstegard, T.S., Becker, G.M., Spangler, G.L., MacNeil, M.D., Miller, J.E., 2022. Single nucleotide polymorphism effects on lamb fecal egg count estimated breeding values in progeny-tested Katahdin sires. Front. Genet. doi: 10.3389/fgene.2022.866176.


O’Brien, D. and S. Wildeus. 2021. Influence of Season of Birth, Breed and Reproductive Status on Carcass Traits of Male Hair Sheep Lambs. J. Anim. Sci Vol. 99:38, Suppl. S2


O’Brien, D., S. Wildeus and W. Brousseau. 2022.Producer certification in mobile processing: Mitigating lack of access to sheep and goat processing in Virginia. J. Anim. Sci Vol. 100: 3, Suppl. S1


O’Brien, D. and S. Wildeus. 2022. Growth and carcass traits of short scrotum and castrated hair sheep lambs on pasture during different seasons. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 322


Page, C. M., R. M. Knuth, T. W. Murphy, D. C. Rule, B. Bisha, J. B. Taylor, and W. C. Stewart. Effect of   increasing dietary zinc sulfate fed to gestating ewes: II Milk somatic cell count, microbial populations, and fatty acid composition. Submitted to Applied Animal Science (in press).


Patton, C., S. P. Greiner, S.A. Bowdridge. 2021. Determination of circulating interleukin-13 in sheep after infection with Haemonchus contortus.


Smith, D., Michael Thonney, Katherine Petersson, Maria L Hoffman., 2021. PSIV-11 Effects of feeding a 50% cranberry vine pellet on milk components during lactation in sheep. J. Anim. Sci. 99 (Suppl. 3), 300 (Abstr.)


Smith, D., K.L. Bentley, S.A. Bowdridge. 2021. Selection for low fecal egg count estimated breeding value correlates with greater circulating antibody in sheep


Robertson, M., S. Wildeus, D. O’Brien. 2022.  Effect of semen dose on pregnancy rate using liquid semen AI in hair sheep. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 65


Rohrbaugh, R.T., S.P. Greiner, S.A. Bowdridge. 2021. Anthelmintic resistance in Angus bulls participating in regional performance tests.


Snider, A. P., B. A. Freking, J. R. Miles, L. A. Rempel, M. S. Crouse, R. A. Cushman, S. Wildeus, and T. W. Murphy. 2022. Sperm characteristics of maternal composite rams before and after the breeding  season. Soc. St. Rep. Ann. Meeting.


Terrill, T.H., Whitley, N.C., Burke, J.M., Miller, J.E., 2021. Use of sericea lespedeza (Lespedeza cuneata) as a nutraceutical forage for livestock. J. Anim. Sci. 99 (Suppl. 2), 34-35 (Abstr.).


Thorne, J.W., Bowdridge, B.A., Murdoch, B.M., R.R. Redden. Response of Rambouillet Lambs to an Artificial Gastrointestinal Nematode Infection. Animals 2022, 12(9). Doi:10.3390/ani12091199


Thorne, J.W. R.R. Redden, S.A. Bowdridge, G.M. Becker, M.R. Stegemiller, B.M. Murdoch. 2022. Genome-wide analysis of sheep artificially or naturally infected with gastrointestinal nematodes. Annual Meeting of American Society of Animal Science and Canadian Society of Animal Science. Oklahoma City, OK, June 26th-29th, 2022.


Weaver, A.R., J.J. Garza, S.P. Greiner, S.A. Bowdridge. 2021. Immune mechanisms of Texel sheep to adult and egg stages of Haemonchus contortus. Parasit. Immunol. 


Whitley, N.C., Burke, J.M., Smith, E., Lyte, K., Terrill, T.H., 2022. Determining the efficacy of Red Cell® in combination with anthelmintic drugs against indicators of gastrointestinal nematode parasitism in sheep and goats. Small Rum. Res. 209, Article 106656. 


Whitley, N.C., Dykes, G., Vazquez, J., Burke, J.M., Terrill, T.H., 2021. Effect of copper oxide wire particles with and without anthelmintic treatment or anthelmintic treatment alone on gastrointestinal nematode (GIN) fecal egg counts in goats. J. Anim. Sci. 99 (Suppl. 2), 43 (Abstr.).


Wildeus, S., D. O’Brien, G. J. Pent, and K. M. Payne. 2021. Growth performance of short scrotum and castrated hair sheep lambs on pasture during different seasons. J. Anim. Sci Vol. 99:40, Suppl. S2


Wildeus, S., T. Murphy, and D. O’Brien. 2021. Evaluation of Barbados Blackbelly and St. Croix hair sheep under accelerated lambing using purebred and terminal sire mating: Ewe fertility, prolificacy, and productivity.  J. Anim. Sci Vol. 99: 487–488, Suppl. S3


Wildeus, S, T. Murphy, and D. O’Brien. 2021. Evaluation of Barbados Blackbelly and St. Croix hair sheep under accelerated lambing using purebred and terminal sire mating: Lamb survival and body weight.  J. Anim. Sci Vol. 99: 488–489, Suppl. S3


Wildeus, S., T. Murphy, J. Lee, C. Teutsch, and D. O’Brien. 2022. Pasture-based production of landrace hair sheep under accelerated mating: Use of a terminal sire. Proc. ARD Research Symposium 2022, Atlanta, GA, April 2-5, p. 320


 


Extension publications


Ehrhardt, R.A.  2022. Essential supplies for lambing season.  Michigan Shepherds News.


Ehrhardt, R.A.  2021. A basic biosecurity quarantine protocol for new flock additions. Michigan Shepherd News


Ehrhardt, R.A. 2021. Preventing White Muscle Disease in Sheep with Selenium and Vitamin E Supplementation. Michigan Shepherd News.


Ehrhardt, R.A.  2021.  Controlling coccidiosis in your flock.   Michigan Shepherd News


Ehrhardt, R.A. 2021. Is pasture lambing a good option for your farm?  Michigan Shepherd News.


Ehrhardt, R.A.  2021.  Braising is a fantastic method to make delicious meals out of less expensive lamb cuts.  Michigan Shepherd News.


Ehrhardt, R.A. 2021. Processing lambs and newborn care.  Video created for MSU small ruminant birth program.


Ehrhardt, R.A. 2021. Birth signs and normal birth process.  Video created for MSU small ruminant birth program.


Ehrhardt, R.A. 2021. Colostrum management.  Video created for MSU small ruminant birth program.


Ehrhardt, R.A. 2021. Lamb mortality diagnosis.  Video created for MSU small ruminant birth program.

07/28/2023

Publications


Arisman, B.C., Burke, J.M., Morgan, J.L.M., Lewis, R.M., 2023. Clustering climate and management practices to define environmental challenges affecting gastrointestinal parasitism in Katahdin sheep. J. Anim. Sci. 101, 1-10.


Becker GM, Burke JM, Lewis RM, Miller JE, Morgan JLM, Rosen BD, Van Tassell CP, Notter DR and Murdoch BM. Variants within gene EDIL3 are associated with increased fecal egg counts in Katahdin sheep at weaning. Frontiers in Genetics (2022). DOI: 10.3389/fgene.2022.817319


Becker GM, Burke JM, Lewis RM, Miller JE, Morgan JL, Rosen BD, Van Tassell CP, Notter DR, Murdoch BM. Inbreeding and effective population size of United Stated Katahdin sheep. The 12th World Congress on Genetics applied to Livestock Production (2022). https://www.wageningenacademic.com/pb-assets/wagen/WCGALP2022/23_004.pdf


Burke, J.M., Miller, J.E., Orlik, S.T., Garza, J.J., Acharya, M., Wood, E., Terrill, T.H., 2023. Sericea lespedeza leaf meal fed to sheep and goats reduces serum concentrations of trace minerals. Sheep Goat Res. J.


Burke, J.M., Popp, M., Anderson, J., Miller, J.E., Notter, D.R., 2022. The impact of sire fecal egg count estimated breeding values on indicators of offspring gastrointestinal nematode infection, and relative impact of lamb estimated breeding values on sale value of ram lambs. Small Rum. Res. 216; 106830. https://doi.org/10.1016/j.smallrumres.2022.106830.


Davenport KM, Bickhart DM, Worley KC, Murali SC, Cockett NE, Heaton MP, Smith TPL, Murdoch BM, Rosen BD. An improved ovine reference genome assembly to facilitate in depth functional annotation of the sheep genome. GigaScience (2022) Feb 4;11. DOI: 10.1093/gigascience/giab096.


DelCurto T., Wyffels S., Vavra M., Wisdom M., Posbergh C. 2023. Western Rangeland Livestock Production Systems and Grazing Management. In: Rangeland Wildlife Ecology and Conservation,     editor, Rangeland Wildlife Ecology and Conservation.


Ehrhardt, R.A. 2022. Critical control points of lamb survival.  Proceedings of the Michigan Veterinary Conference.  


Ehrhardt, R.A. 2022. Diagnosis and treatment of hoof disease in small ruminants. Proceedings of the Michigan Veterinary Conference. 


Ehrhardt, R.A. 2022. Prevention and treatment of common nutritional disorders in small ruminants. Proceedings of the Michigan Veterinary Conference.  


Florez, J. M., K. Martins, S. Solin, J. Bostrom, P. Rodríguez-Villamil, F. Ongaratto, S. A. Larson, U. Ganbaatar, A. W. Coutts, D. Kern, T. W. Murphy, E. Kim, D. F. Carlson, A. Huisman, T. S. Sonstegard, and C. A. Lents. CRISPR/Cas9-editing of KISS1 to generate      pigs with hypogonadotropic hypogonadism as a castration free trait and a mosaic parental line. Frontiers in Genetics 13. https://doi.org/10.3389/fgene.2022.1078991


Fraley, Hannah. “Sheep Targeted Grazing of Plains Larkspur (Delphinium geyeri) as a Cattle Toxicity Mitigation Strategy”. M.S. Thesis., University of Wyoming- Laramie, College      of Agriculture, Life Sciences and Natural Resources. April 2023


Freking, B. A., T. W. Murphy, C. G. Chitko-McKown, A. M. Workman, and M. P. Heaton. 2022. Impact of four ovine TMEM154 haplotypes on ewes during multiyear lentivirus exposure. Int. J. Mol. Sci. 23:14966. doi:10.3390/ijms232314966.


Green, C., Wilmer, H.N., Ferguson, D.B., Crimmins, M.B., Mcclaren, M.P. 2022. Using scale and human agency to frame ranchers’ discussions about socio-ecological change and   resilience. Journal of Rural Studies. 96(2022):217-226.      https://doi.org/10.1016/j.jrurstud.2022.11.001.


Maierle, C.L., A.R. Weaver, E.E. Felton, S.P. Greiner, and S.A. Bowdridge. 2022. Evaluation of terminal sire breeds for hair sheep production systems: Feedlot environment. Small Ruminant Research, 213: 106726. DOI: 10.1016/j.smallrumres.2022.106726


Makela, Barbara, Erin Recktenwald, Filipe Couto Alves, Richard Ehrhardt, Almudena Veiga-Lopez. 2022. Effect of pre-conceptional nutrition and season on fetal growth during early pregnancy in sheep. Theriogenology 190:22-31.


Notter DR, Heidaritabar M, Burke JM, Shirali M, Murdoch BM, Morgan JLM, Morota G, Sonstegard TS, Becker GM, Spangler GL, MacNeil MD, Miller JE. Single nucleotide polymorphism effects on lamb fecal egg count estimated breeding values in progeny-tested Katahdin sires. Frontiers in Genetics (2022) DOI: 10.3389/fgene.2022.866176.


Oliveira RD, Mousel MR, Gonzalez MV, Durfee CJ, Davenport KM, Murdoch BM, Taylor JB, Neibergs HL, White SN. A high density genome-wide association with absolute blood monocyte count in domestic sheep identifies novel loci. PloS One (2022). DOI.org/10.1371/journal.pone.0266748.


Posbergh, C.; Roeder, B.; Murphy, T.; Stewart, W.; Kott, R.; Hatfield, P.; Thomas, V.; Drummond, J. 2023. Ewe and lamb body condition, breeding and production data from the Montana Agricultural Experiment station, Montana State University, Bozeman, MT from 1960 - 2012. Ag Data Commons. doi:10.15482/USDA.ADC/1528462


Ritchie, Clara. “Effects of maturity, diet, breed, and sex on fatty acid profiles from ovine carcasses and the effects of delayed high-energy concentrate diets on carcass and sensory characteristics compared to conventional finishing systems in Rambouillet wethers”. M.S. Thesis., University of Wyoming- Laramie, College of Agriculture, Life Sciences            and Natural Resources. August 2022


Rosa-Velazquez, M., Y. Wang, A. Sanders, S. Pyle, L. G. Garcia, B. M. Bohrer, and A. E. Relling. 2022. Effects of maternal dietary fatty acids during mid-gestation on growth, glucose metabolism, carcass characteristics, and meat quality of lamb progeny that were fed differing levels of dry matter of intake. Meat Science 194. doi:10.1016/j.meatsci.2022.108991.


Shaub D., Maninger S., Roeder B.L., Posbergh C.J. 2023. Technical Note: The Impact of Temperature and Humidity on United States Fine-Wool Fiber Diameter Measurements. Sheep & Goat Research Journal


Smith, Delaney, Petersson, Katherine, Peterson, Maria L.  Determining the Effects of Cranberry Vine Supplementation on the Ewe and Her Offspring During Pregnancy and Lactation. Animals In Press.


Tajonar, K., M. Gonzalez-Ronquillo, A. E. Relling, R. E. Nordquist, C. Nawroth, and E. Vargas-Bello-Pérez Einar. 2023. Toward assessing the role of dietary fatty acids in lamb's neurological and cognitive development. Frontiers in Veterinary Science. 10. doi: 0.3389/fvets.2023.1081141


Thorne JW, Bowdridge SA, Murdoch BM, Redden RR. Response of Rambouillet Lambs to an Artificial Gastrointestinal Nematode Infection. Animals (2022) DOI.org/10.3390/ani12091199


Southerland, C.N., Taylor, J.B., Yelich, J.V., Ellison, M.J. 2022. Refined methodology for identification of bitterness aversion in mature rams through quantification of fluid intake     and behavioral response to phenylthiocarbamide. Applied Animal Behaviour Science. 254:105706. https://doi.org/10.1016/j.applanim.2022.105706.


Stegemiller, M.R., Redden, R.R., Notter, D.R., Taylor, T., Taylor, J.B., Cockett, N.E., Heaton, M.P., Kalbfleisch, T.S., Murdoch, B.M. 2023. Using whole genome sequence to compare variant callers and breed differences of US sheep. Frontiers in Genetics. 13:1060882. https://doi.org/10.3389/fgene.2022.1060882.


Vargas Jurado, N., Notter, D.R., Taylor, J.B., Brown, D.J., Mousel, M.R., Lewis, R.M. 2022. Model definition for genetic evaluation of purebred and crossbred lambs including heterosis. Journal of Animal Science. 100:1-14. DOI: https://doi.org/10.1093/jas/skac188


Weaver, A.R., D.L. Wright, S.P. Greiner, and S.A. Bowdridge. 2023. Effect of sire fecal egg count estimated breeding value on parasite resistance traits in Haemonchus contortus infected Katahdin lambs. Sm. Rum. Res. 222: 106970. DOI:10.1016/j.smallrumres.2023.106970.


Weaver, A.R., D.L. Wright, S.P. Greiner, and S.A. Bowdridge. 2023. Effect of sire fecal egg count estimated breeding value on Katahdin lamb parasite resistance in pasture-based system. Sm. Rum. Res. 224:106984. DOI:10.1016/j.smallrumres.2023.106984.


Weaver, A.R., D.L. Wright, D.R. Notter, A.M. Zajac, S.A. Bowdridge, and S.P. Greiner. 2022. Evaluation of terminal sire breeds for hair sheep production systems: Forage environment. Small Ruminant Research, 213: 106739. DOI: 10.1016/j.smallrumres.2022.106739


Whaley, J. R., T. W. Murphy, C. L. Gifford, W. J. Means, J. P. Ritten, H. N. McKibben, C. M. Page, and W. C. Stewart. 2022. Effects of harvest season on carcass characteristics of     lambs harvested in the Intermountain West. App. Anim. Sci. 38:393-401.    doi:10.15232/aas.2022-02322.


Wilson, C.S., Petersen, J.L., Blackburn, H.D., Lewis, R.M. 2022. Assessing population structure and genetic diversity in U.S. Suffolk sheep to define a framework for genomic selection.          Journal of Heredity. 113(4):431-443. https://doi.org/10.1093/jhered/esac026.


 


 


Extension publications


Barnes, T. Campbell, B.J. 2023. Small ruminant nutrition considerations. 2023 Small Farm Conference and Trade Show. Mansfield, Ohio, USA. March 11, 2023.


Burke, J.M., 2023. Use of Red Cell to hasten recovery from anemia associated with barber   pole worm. For the Love of Goats (podcast).


Burke, J.M., Lewis, R.M., Notter, D.R., 2023. How does selection for parasite resistance in Katahdin sheep affect other important traits? Eastern Alliance for Production Katahdins Newsletter.


Burke, J.M., 2022. The value of using sires with high parasite resistance on offspring and the value of NSIP EBVs to sell breeding stock (Timely Topic series). www.wormx.info.


Campbell, B.J. 2022. Fall lambs and annual forages. 2022 eBarns Report – Ohio State Digital Ag Program. p. 54-55. 2022 eBarns report link.


Campbell, B.J. 2022. Delayed lamb weaning. 2022 eBarns Report – Ohio State Digital Ag Program. p. 52-53. 2022 eBarns report link.


Campbell, B.J., Zynda, H.M. 2022. Annual forages nutrient summary. 2022 eBarns Report – Ohio State Digital Ag Program. p. 18-19. 2022 eBarns report link.


Campbell, B.J., Barnes, T., Garcia-Guerra, A. 2022. AS-1025 – Small Ruminant Production: Are CIDRs Reusable? Ohioline: Ohio State University Extension Factsheet Publications. Factsheet link.


Campbell, B.J. 2023. Interpreting forage analyses and understanding ruminant livestock needs. Small Farm Ruminant Field Day. Jackson, Ohio, USA. April 29, 2023.


Campbell, B.J. 2023. Assessing wool – Natures natural fiber. Richland County Soil and Water Conservation District: Sheep and Wool Workshop. Mansfield, Ohio, USA. April 11, 2023.


Campbell, B.J. 2023. Parasite control and prevention in small ruminants. 2023 Small Farm Solutions Annual Conference. Kidron, Ohio, USA. February 25, 2023.


Campbell, B.J. 2023. Nutrition: Gestation, Nursing, Early Growth, and Maintenance. Lambing and Kidding Basics Field Day. LaRue, Ohio, USA. February 18, 2023.


Campbell, B.J. 2023. Ohio small ruminant production: Common challenges and questions. 2023 Midwest Veterinary Conference. Columbus, Ohio, USA. February 17, 2023.


Campbell, B.J. 2023. All about sheep and goats – The Ohio State University Ohio 4-H February Zoom Webinar Series: Handling and Welfare. Online. February 23, 2023. Video link.


Campbell, B.J. 2023. All about sheep and goats – The Ohio State University Ohio 4-H February Zoom Webinar Series: Health – Market lamb and breeding stock challenges. Online. February 8, 2023. Video link.


Campbell, B.J. 2023. All about sheep and goats – The Ohio State University Ohio 4-H February Zoom Webinar Series: Nutrition – Animal management and selection. Online. February 2, 2023. Video link.


Campbell, B.J. Smith J. 2023. Lambing and it’s challenges. Mid-Ohio Shepherd’s Ohio Grazing Conference. Mt. Hope, Ohio, USA. January 27, 2023.


Campbell, B.J. 2023. Small ruminant production flock nutrition considerations. Ag Pro Expo. Millersburg, Ohio, USA. January 26, 2023.


Campbell, B.J., Gelley, C.H. 2022. 2022 OSU Sheep Research Update. Buckeye Shepherd’s Symposium. Wooster, Ohio, USA. December 3, 2022.


Campbell, B.J., Gelley, C.H. 2022. Vegetation management of vineyards with sheep. 2022 Lamb and Wine Field Day. Piketon, Ohio, USA. November 5, 2022.


Campbell, B.J. 2022. Interpreting forage analyses and understanding ruminant livestock needs. Small Farm Ruminant Field Day. Wooster, Ohio, USA. October 8, 2022.


Campbell, B.J. 2022. Ruminant housing systems and principles. Small Farm Ruminant Field Day. Wooster, Ohio, USA. October 8, 2022.


Campbell, B.J. 2022. Condition your flock for winter. Mid-Ohio Shepherds group Mt. Hope Fall Meeting. Mt. Hope, Ohio, USA. September 27, 2022.


Campbell, B.J. 2022. Live lamb and carcass evaluation. Mid-Ohio Shepherds group Mt. Hope Fall Meeting. Mt. Hope, Ohio, USA. September 27, 2022.


Campbell, B.J. 2022. Health considerations for small sheep and goat operations. Farm Science Review: Small Farm Center. London, Ohio, USA. September 21, 2022.


Campbell, B.J. 2022. Meeting nutritional needs in solar grazing. Kentucky Sheep and Goat Development Office: Solar Grazing 101 Workshop. Harrodsburg, Kentucky, USA. September 17, 2022.


Campbell, B.J. 2022. Small ruminant marketing trends and opportunities. OSU Extension Muskingum County Monthly Breakfast Talk. Zanesville, Ohio, USA. September 6, 2022.


Campbell, B.J. 2022. Integrating sheep grazing into vineyard operations. 2022 Grape Field Day: Mulch and Mutton. Geneva, Ohio, USA. August 11, 2022.


Campbell, B.J. 2022. Sheep marketing options. An Evening with Lamb. Urbana, Ohio, USA. June 11, 2022.


Campbell, B.J. 2022. Quality comparisons of annual forages. Mid-Ohio Shepherds and Ohio Grazing Conference Resource Guide. November 2022. p. 67-68.


Campbell, B.J. 2022. Winter grazing: Annual forages improve lamb growth and health parameters. Mid-Ohio Shepherds and Ohio Grazing Conference Resource Guide. November 2022. p. 51-52.


Campbell, B.J. 2022. Challenges to Ohio sheep production. Ohio’s Country Journal. November 16, 2022. Article link.


Campbell, B.J. 2023. Thinking outside of the box – The use of plant compounds as natural anthelmintics. May 16, 2023. Extension article link.


Campbell, B.J. 2023. Capturing premiums with small ruminant products through niche marketing. March 21, 2023. Extension article link.


Campbell, B.J. 2023. 3 Challenges in Ohio sheep production systems. November 15, 2022. Extension article link.


Campbell, B.J. 2022. Small ruminant production: Are CIDRs Reusable? July 5, 2022. Extension article link.


Collins M.J., Roeder B.L., Yeoman C.J., Posbergh C.J. Characterizing the Wool Microbiome and its influence on Lamb and Wool Production. 139th Annual Montana Wool Growers Convention, Billings, MT. Dec 2022.


Ehrhardt, R.A. 2022. Preventing common abortion disease outbreaks in sheep flocks on the upper Midwest USA.   Michigan Shepherd News.


Ehrhardt, R.A. 2022. Understanding sore mouth disease in small ruminants. Michigan Shepherd News.


Ehrhardt, R.A. 2022.  Braising and slow cooking techniques for lamb neck and shanks.   Michigan Shepherd News.


Ehrhardt, R.A. Michigan Sheep Production Opportunities.  Sheep health and nutrition workshop.  MSU Extension Sheep Producer Meeting and Workshop.  Mio, MI. Sept 22-23, 2022. 


Ehrhardt, R.A. Prevention and treatment of common nutritional disorders in small ruminants.  Michigan Veterinary Conference, Grand Rapids, MI, Oct 7, 2022.


Ehrhardt, R.A. Critical control points for lamb survival.  Michigan Veterinary Conference, Grand Rapids, MI, Oct 7, 2022.


Ehrhardt, R. A. The importance of the non-traditional US lamb market. (Moderator of panel discussion) American Lamb Summit, East Lansing, MI. August 8, 2022.


Ehrhardt, R.A. (Presenter/interviewee) Accelerated lambing podcast. American Sheep Industry Podcast Series, August 25, 2022.


Ehrhardt, R.A. Confinement Sheep Production.  (Panel discussion member).  Buckeye Shepherds Symposium, Wooster, OH. Dec. 3, 2022.


Ehrhardt, R.A. (Presenter and author).  “Critical control points for lamb survival”.  Ontario Masters Course Lamb Survival.  Nov. 15, 2022.


Ehrhardt, R.A. (Presenter and author).  “Managing coccidiosis in sheep production”.  Ontario Masters Course Lamb Survival.  Dec. 1, 2022.


Ehrhardt. R.A. (Presenter and author).  Considerations in facility design and on the economics of confinement sheep production. Buckeye Shepherds Symposium, Wooster, Ohio, Dec 2, 2022.


Ehrhardt, R. A. (Presenter and author).  Optimizing accelerated lambing systems to produce a consistent, year-round supply of lamb. American Lamb Summit, East Lansing, Mi   August 8, 2022.


Ehrhardt, R.A and K. Gould. (Presenter) “Fencing and water systems for grazing.”  MSU Extension Beginning Grazing School. Sept 7, 2022.


Ehrhardt, R.A and K. Gould. (Presenter) “Nutrition, health and welfare of grazing animals.”  MSU Extension Beginning Grazing School. Sept 14. 2022.


Ehrhardt, R.A., Metzger, M.M., and Recktenwald, E.R. Sustainable management of internal parasites in sheep and goats in the upper Midwest and Northeast USA.  4-part webinar series.  Session 1: Parasites of impact in sheep and goats and basics of their lifecycles. Session 2: Factors that determine the risk of parasite infection and grazing management strategies to reduce risk. Session 3: Control and infection monitoring approaches and methods to maintain refugia. Session 4: Putting it all together: developing a successful sustainable integrated parasite control program for your farm.  April 26, May 3, May 10, May 17 webinar sessions.  June 11 afternoon workshop. East Lansing, MI. 


Ehrhardt, R.A., Metzger, M.M., and Recktenwald, E.R. MSU Sheep and goats for small farms program. “Application of effective vaccines in US sheep and goat farms in 2023“, “Quality assurance in sheep and goat production”, “What does a vet client patient relationship look like for sheep and goat farms in Michigan in 2023?” March 11, 2022.


Ehrhardt, R.A., Recktenwald, E.B., and Metzger, M. MSU small ruminant birth management program. 4-part webinar series: Session 1:  Nutritional management of sheep and goats in late pregnancy and lactation; Session 2: Health management of sheep and goats at birth: vaccination schedules, newborn and maternal health; Session 3: Birth assistance and newborn management; Session 4: Identifying challenges in birth management on your farm and developing improvement plans addressing health management, nutritional management and facility improvements. Jan, 3, Jan. 10, Jan. 17, Jan. 24 and Session 5: Birth management workshop Jan. 28, 2023.  East Lansing, MI.


Gelley, C.H., Morris, J., Campbell, B.J., Romich, E., Moser, S. 2022. High quality forage and cool-season hay at solar sites with Ohio State. American Solar Grazing Association Monthly Webinar #58. Online. September 7, 2022.


Lewis, R., Boyer, T., Brito, L, Murphy, T., Freking, B., Burke, J., Taylor, B., 2022. Sheep GEMS. Sheep Industry News.


Murphy, T.W. Jr., Freking, B.A., Burke, J.M., Taylor, J.B., 2022. Updates from the USDA ARS Genetic reference flocks. Sheep Industry News.


Petersson, K.H., Kass, E.P.  Potential tools for managing internal parasites in pastured small ruminants. Cornell Sheep and Goat Symposium, Ithaca, NY, September 17, 2022.


Petersson, K.H. Best Management Practices for Integrated Gastrointestinal Parasite Control in Small Ruminants.  Dairy Sheep Association Virtual Symposium, November 9, 2022.


Petersson, K.H., Kass, E.P. Best Management Practices for Integrated Gastrointestinal Parasite Control in Small Ruminants.  AASRP ADGA Veterinary Continuing Education Program. Liverpool/Syracuse, New York, October 1, 2022.


Petersson, K.H., Kass, E.P. Got Worms? Integrated Parasite Management for Pastured Small Ruminants NOFA VT Winter Conference Intensives, Burlington, VT, February 19, 2023.


Recktenwald, E.B and R.A. Ehrhardt.  Major factors influencing the carbon footprint of US lamb production.  American Lamb Summit, Lansing, MI August 9, 2022.


Relling, A.E., Campbell, B.J. 2022. Soy hulls and lambs. 2022 eBarns Report – Ohio State Digital Ag Program. p. 56-57. 2022 eBarns report link.


Schaub D., Posbergh C.J. Associations between Microbial Communities and Physiological States in Range Sheep. 139th Annual Montana Wool Growers Convention, Billings, MT. Dec 2022.


Wilson, C.S., Lewis, R.M. 2022. Probing the genetic diversity of Suffolk sheep. Sheep Industry News. Volume 26, Issue 5: 14-15.


 


Genetic reference flocks established at ARS stations. August 2022. American Sheep Industry Association Sheep Industry News. Sheep Industry News August 2022 (digitaledition.pub)


Sheep Industry News Genetics issue discussing the weigh system and the use of GPS units. Sheep Industry News August 2022 (digitaledition.pub)


 


 

Log Out ?

Are you sure you want to log out?

Press No if you want to continue work. Press Yes to logout current user.

Report a Bug
Report a Bug

Describe your bug clearly, including the steps you used to create it.