Research Project: Alleviating Rate Limiting Factors that Compromise Beef Production Efficiency

Location: Livestock and Range Research Laboratory

Publications (Clicking on the reprint icon will take you to the publication reprint.)

Effects of feeding 60% dried corn distillers grains or the equivalent sulfur as CaSO4 on DNA integrity and gene expression in yearling Angus bull sperm - (Peer Reviewed Journal)
Kassetas, C.J., Geary, T.W., Zezeski, A.L., Caton, J.S., Kirsch, J.D., Dorsam, S.T., Da Silva Diniz, W.J., Mccarthy, K.L., Crouse, M.S., Dahlen, C.R., Sedivec, K.K., Neville, B.W. 2023. Effects of feeding 60% dried corn distillers grains or the equivalent sulfur as CaSO4 on DNA integrity and gene expression in yearling Angus bull sperm. Ruminants. 3:286-298. https://doi.org/10.3390/ruminants3040026.

Genomic analysis of heterosis in an Angus x Hereford cattle population - (Peer Reviewed Journal)
Hay, E.A., Roberts, A.J. 2023. Genomic analysis of heterosis in an Angus x Hereford cattle population. Animals. 13(2). Article 191. https://doi.org/10.3390/ani13020191.

Impacts of rumen degradable or rumen undegradable protein supplement on supplement intake behavior and performance of yearling heifers and cows grazing dryland pastures - (Peer Reviewed Journal)
Manoukian, M.K., Delcurto, T., Kluth, J., Carlisle, T., Davis, N., Nack, M., Wyffels, S., Van Emon, M.L., Geary, T.W., Scheaffer, A. 2022. Impacts of rumen degradable or rumen undegradable protein supplement on supplement intake behavior and performance of yearling heifers and cows grazing dryland pastures. Animals. 12. Article 3338. https://doi.org/10.3390/ani12233338.

Fuzzy logic as a strategy for combining marker statistics to optimize preselection of high-density and sequence genotype data - (Peer Reviewed Journal)
Ling, A.S., Hay, E.A., Aggrey, S., Rekaya, R. 2022. Fuzzy logic as a strategy for combining marker statistics to optimize preselection of high-density and sequence genotype data. Genes. 12(11). Article 2100. https://doi.org/10.3390/genes13112100.

Modulation of expression of estrus, steroidogenesis and embryo development following peri-Artificial Insemination nutrient restriction in beef heifers - (Peer Reviewed Journal)
Epperson, K.M., Beck, E.E., Rich, J.J., Northrop-Albrecht, E.J., Perkins, S.D., Zezeski, A.L., Ketchum, J.N., Zoca, S.M., Walker, J.A., Geary, T.W., Perry, G.A. 2022. Modulation of expression of estrus, steroidogenesis and embryo development following peri-Artificial Insemination nutrient restriction in beef heifers. Animal Reproduction Science. 244. Article 107045. https://doi.org/10.1016/j.anireprosci.2022.107045.

Editorial: Genetic diversity and selection signatures in composite breeds - (Other)
Paim, T., Hay, E.A., Brito, L. 2022. Editorial: Genetic diversity and selection signatures in composite breeds. Frontiers in Genetics. 13. https://doi.org/10.3389/fgene.2022.992609.

Genetic architecture of a composite beef cattle population - (Peer Reviewed Journal)
Hay, E.A., Toghiani, S., Roberts, A.J., Paim, T., Kuehn, L.A., Blackburn, H.D. 2022. Genetic architecture of a composite beef cattle population. Journal of Animal Science. 2022. Article 230. https://doi.org/10.1093/jas/skac230.

Sperm quality assessments using flow cytometry do not differ between Angus and Charolais breeds of yearling bulls meeting BSE threshold requirements - (Abstract Only)

Correlations between reactive oxygen species and functional measurements of spermatozoa from beef bulls - (Abstract Only)

Medroxyprogesterone acetate in reindeer bulls: testes histology, cfos activity in the brain, breeding success and semen quality - (Peer Reviewed Journal)
Rowell, J.E., Blake, J.E., Roth, K., Sutton, C., Sachse, C., Cupp, A.S., Geary, T.W., Zezeski, A.L., Alexander, B.M., Ziegler, R.L., Shipka, M.P. 2022. Medroxyprogesterone acetate in reindeer bulls: testes histology, cfos activity in the brain, breeding success and semen quality. Journal of Animal Sciences. 100(6):1-11. https://doi.org/10.1093/jas/skac106.

Impact of preovulatory estradiol concentrations on subsequent luteal function in beef cattle - (Peer Reviewed Journal)
McLean, M.K., Geary, T.W., Zezeski, A.L., Smith, M.F., Spencer, T.E., Pohler, K.G., Reese, S.T., Perry, G.A. 2022. Impact of preovulatory estradiol concentrations on subsequent luteal function in beef cattle. Systems Biology in Reproductive Medicine. 68(4):286-297. https://doi.org/10.1080/19396368.2022.2038717.

Factors impacting abundance of PAGs after embryo transfer in beef cattle - (Abstract Only)
Quail, L.K., Ketchum, J.N., Epperson, K.M., Zoca, S.M., Andrews, T.N., Kline, A.C., Rich, J.J., Zezeski, A.L., Ogg, M.A., Rhoades, J.R., Smith, M.F., Perry, G.A., Geary, T.W. 2022. Factors impacting abundance of PAGs after embryo transfer in beef cattle. American Society of Animal Science Southern Section Meeting. 100(S1):31. https://doi.org/10.1093/jas/skac028.060.

Inbreeding calculated with runs of homozygosity suggests chromosome-specific inbreeding depression regions in Line 1 Hereford - (Peer Reviewed Journal)
Pilon, B., Hinterneder, K., Hay, E.A., Fragomeni, B. 2021. Inbreeding calculated with runs of homozygosity suggests chromosome-specific inbreeding depression regions in Line 1 Hereford. Animals. 11(11). Article 3105. https://doi.org/10.3390/ani11113105.

Preovulatory estradiol elicits an effect on pregnancy maintenance in beef cows - (Abstract Only)

Bull field fertility differences can be estimated with in vitro capacitation and flow cytometry - (Abstract Only)

Transcriptome profiles of in vivo matured bovine cumulus-oocyte complexes reveal unique gene expression between the oocyte and cumulus cells - (Abstract Only)

Components of the insulin-like growth factor system in in vivo- and in vitro-derived bovine pregnancies and neonates, and their association with conceptus growth - (Peer Reviewed Journal)
Wilhelm Rodrigues, B., Ticiani, E., Campagnolo, K., Rodrigues, J.L., Roberts, A.J., Anderson, G.B., Bertolini, M. 2021. Components of the insulin-like growth factor system in in vivo- and in vitro-derived bovine pregnancies and neonates, and their association with conceptus growth. Animal Reproduction Science. 234. Article 106856. https://doi.org/10.1016/j.anireprosci.2021.106856.

Dissection of the impact of prioritized QTL-linked and -unlinked SNP markers on the accuracy of genomic selection - (Peer Reviewed Journal)
Ling, A., Hay, E.A., Aggrey, S., Rekaya, R. 2021. Dissection of the impact of prioritized QTL-linked and -unlinked SNP markers on the accuracy of genomic selection. BioMed Central (BMC) Genetics. 22. Article 26. https://doi.org/10.1186/s12863-021-00979-y.

Effect of supplemental trace minerals on standard and novel measure of bull fertility - (Peer Reviewed Journal)
Geary, T.W., Waterman, R.C., Van Emon, M.L., Ratzburg, C.R., Lake, S., Eik, B.A., Armstrong, D.R., Zezeski, A.L., Heldt, J.S. 2021. Effect of supplemental trace minerals on standard and novel measure of bull fertility. Theriogenology. 172:307-314. https://doi.org/10.1016/j.theriogenology.2021.07.006.

Grid search approach to discriminate between old and recent inbreeding using phenotypic, pedigree and genomic information - (Peer Reviewed Journal)
Sumreddee, P., Hay, E.A., Toghiani, S., Roberts, A.J., Aggrey, S., Rekaya, R. 2021. Grid search approach to discriminate between old and recent inbreeding using phenotypic, pedigree and genomic information. Biomed Central (BMC) Genomics. 22.Article 538. https://doi.org/10.1186/s12864-021-07872-z.

Differential transcript profiles in cumulus-oocyte complexes originating from pre-ovulatory follicles of varied physiological maturity in beef cows - (Peer Reviewed Journal)
Moorey, S.E., Monnig, J.M., Smith, M.F., Ortega, M., Green, J.A., Pohler, K.G., Bridges, G., Behura, S.K., Geary, T.W. 2021. Differential transcript profiles in cumulus-oocyte complexes originating from pre-ovulatory follicles of varied physiological maturity in beef cows. Genes. 12(6):893. https://doi.org/10.3390/genes12060893.

Effect of pre and post-AI nutrition on ovarian dynamics, steroidogenesis, and expression of estrus in beef heifers - (Abstract Only)
Epperson, K.M., Rich, J.J., Zezeski, A.L., Zoca, S.M., Walker, J.A., Geary, T.W., Perry, G.A. 2021. Effect of pre and post-AI nutrition on ovarian dynamics, steroidogenesis, and expression of estrus in beef heifers. American Society of Animal Science Annual Meeting. 99(S3):131. https://doi.org/10.1093/jas/skab235.239.

The interactions of change in nutrition after AI on plasma metabolites, steroid hormones, and uterine histotroph in beef heifers - (Abstract Only)
Andrews, T.N., Walker, J.A., Epperson, K.M., Rich, J.J., Zoca, S.M., Kline, A.C., Quail, L.K., Mccoski, S.R., Sanford, C., Zezeski, A.L., Geary, T.W., Perry, G.A. 2021. The interactions of change in nutrition after AI on plasma metabolites, steroid hormones, and uterine histotroph in beef heifers. American Society of Animal Science Annual Meeting. 99(S3):290-291. https://doi.org/10.1093/jas/skab235.533.

Increased preovulatory estradiol improves pregnancy success of embryo transfer in beef cows - (Abstract Only)
Ketchum, J.N., Perry, G.A., Epperson, K.M., Quail, L.K., Ogg, M.A., Zezeski, A.L., Rich, J.J., Zoca, S.M., Kline, A.C., Andrews, T.N., Ortega, M., Smith, M.F., Geary, T.W. 2021. Increased preovulatory estradiol improves pregnancy success of embryo transfer in beef cows. American Society of Animal Science Annual Meeting. 99(S3):124-125. https://doi.org/10.1093/jas/skab235.227.

The interactions of change in nutrition on uterine environment and plasma cholesterol concentrations in beef cattle - (Abstract Only)
Andrews, T.N., Epperson, K.M., Rich, J.J., Zoca, S.M., Zezeski, A.L., Geary, T.W., Lawrence, R.D., Walker, J.A., Perry, G.A. 2021. The interactions of change in nutrition on uterine environment and plasma cholesterol concentrations in beef cattle. Midwestern Section of the American Society of Animal Science. 99:110. https://doi.org/10.1093/jas/skab054.180.

Effects of nutrition on bull fertility - (Abstract Only)
Geary, T.W., Dahlen, C.R., Zezeski, A.L. 2021. Effects of nutrition on bull fertility. American Society of Animal Science Annual Meeting. 99(S3):136. https://doi.org/10.1093/jas/skab235.249.

The effect of melatonin supplementation on dam milking traits and calf performance in beef cattle - (Abstract Only)
Reid, D., Geary, T.W., Zezeski, A.L., Waterman, R.C., Reil, M.S., Burnett, D.D., Lemley, C.O. 2021. The effect of melatonin supplementation on dam milking traits and calf performance in beef cattle. American Society of Animal Science Southern Section Meeting. 99:17-18. https://doi.org/10.1093/jas/skab096.029.

Effect of estradiol preceding and progesterone subsequent to ovulation on proportion of postpartum beef cows pregnant - (Peer Reviewed Journal)
Ciernia, L.A., Perry, G.A., Smith, M.F., Rich, J.J., Northrop, E.J., Perkins, S.D., Green, J.A., Zezeski, A.L., Geary, T.W. 2021. Effect of estradiol preceding and progesterone subsequent to ovulation on proportion of postpartum beef cows pregnant. Animal Reproduction Science. 227. Article 106723. https://doi.org/10.1016/j.anireprosci.2021.106723.

Runs of homozygosity and analysis of inbreeding depression - (Peer Reviewed Journal)
Sumreddee, P., Toghiani, S., Hay, E.A., Roberts, A.J., Aggrey, S., Rekaya, R. 2020. Runs of homozygosity and analysis of inbreeding depression. Journal of Animal Science. 98(12):1-11. https://doi.org/10.1093/jas/skaa361.

Impact of cold stress on birth and weaning weight in a composite beef cattle breed - (Peer Reviewed Journal)
Toghiani, S., Hay, E.A., Roberts, A., Rekaya, R. 2020. Impact of cold stress on birth and weaning weight in a composite beef cattle breed. Livestock Science. 236:104053. https://doi.org/10.1016/j.livsci.2020.104053.

Brief report: Loci associated with conception rate in crossbred beef heifers - (Peer Reviewed Journal)
Oliver, K.F., Geary, T.W., Kiser, J.N., Galliou, J.M., Van Emon, M.L., Seabury, C.M., Spencer, T.E., Neibergs, H.L. 2020. Brief report: Loci associated with conception rate in crossbred beef heifers. PLoS One. 15(4):e0230422. https://doi.org/10.1371/journal.pone.0230422.

Effects of managing mature beef bulls on divergent planes of nutrition on novel measures of bull fertility [Abstract] - (Abstract Only)
Dahlen, C.R., Kassetas, C.J., Geary, T.W., Zezeski, A.L., Underdahl, S.R., Mccarthy, K.L., Kirsch, J.D., Dorsam, S.T., Crouse, M.S., Baumgaertner, F., Sedivec, K.K., Caton, J.S. 2020. Effects of managing mature beef bulls on divergent planes of nutrition on novel measures of bull fertility [Abstract]. Meeting Abstract. 98(S4):114-115. https://doi.org/10.1093/jas/skaa278.209.

Genotype by environment interaction in response to cold stress in a composite beef cattle breed - (Peer Reviewed Journal)
Toghiani, S., Hay, E.A., Fragomeni, B., Rekaya, R., Roberts, A.J. 2020. Genotype by environment interaction in response to cold stress in a composite beef cattle breed. Animal. 1-12. https://doi.org/10.1017/S1751731120000531.

Effect of feeding 60% dried corn distillers grain plus solubles or the equivalent sulfur as CaSO4 on DNA structure and integrity in bull semen [Abstract] - (Abstract Only)
Kassetas, C.J., Geary, T.W., Zezeski, A.L., Caton, J.S., Kirsch, J.D., Dorsam, S.T., Mccarthy, K.L., Crouse, M.S., Sedivec, K.K., Neville, B.W., Dahlen, C.R. 2020. Effect of feeding 60% dried corn distillers grain plus solubles or the equivalent sulfur as CaSO4 on DNA structure and integrity in bull semen [Abstract]. Meeting Abstract. 98(S4):268-269. https://doi.org/10.1093/jas/skaa278.483.

The interactions of change in nutrition on uterine environment and cholesterol concentrations in beef cattle [Abstract] - (Abstract Only)

Effect of pre and post-AI nutrition on ovarian dynamics, steroidogenesis, and estrus expression in beef heifers [Abstract] - (Abstract Only)

A weighted genomic relationship matrix based on Fixation Index (Fst) prioritized SNPs for genomic selection - (Peer Reviewed Journal)
Ling-Yun, C., Toghiani, S., Hay, E.A., Aggrey, S., Rekaya, R. 2019. A weighted genomic relationship matrix based on Fixation Index (Fst) prioritized SNPs for genomic selection. Genes. 10(11):922. https://doi.org/10.3390/genes10110922.

Analysis of the uterine lumen in fertility-classified heifers: II. Proteins and metabolites - (Peer Reviewed Journal)
Moraes, J.G., Behura, S.K., Bishop, J.V., Hansen, T.R., Geary, T.W., Spencer, T.E. 2019. Analysis of the uterine lumen in fertility-classified heifers: II. Proteins and metabolites. Biology of Reproduction. 102(3):571-587. https://doi.org/10.1093/biolre/ioz197.

Analysis of the uterine lumen in fertility-classified heifers: I. glucose, prostaglandins and lipids - (Peer Reviewed Journal)
Moraes, J.G., Behura, S.K., Geary, T.W., Spencer, T.E. 2020. Analysis of the uterine lumen in fertility-classified heifers: I. glucose, prostaglandins and lipids. Biology of Reproduction. 102(2):456-474. https://doi.org/10.1093/biolre/ioz191.

Genomic evaluation of genotype by prenatal nutritional environment interaction for maternal traits in a composite beef cattle breed - (Peer Reviewed Journal)
Hay, E.A., Roberts, A.J. 2019. Genomic evaluation of genotype by prenatal nutritional environment interaction for maternal traits in a composite beef cattle breed. Livestock Science. 229:118-125. https://doi.org/10.1016/j.livsci.2019.09.022.

The effects of short-term medroxyprogesterone acetate on rut related behaviors, semen characteristics and fertility in farmed reindeer bulls - (Peer Reviewed Journal)
Rowell, J.E., Geary, T.W., Blake, J.E., Zezeski, A.L., Shipka, M.P. 2019. The effects of short-term medroxyprogesterone acetate on rut related behaviors, semen characteristics and fertility in farmed reindeer bulls. Theriogenology. 140:201-209. https://doi.org/10.1016/j.theriogenology.2019.08.029.

Pregnancy Associated Glycoproteins (PAGs) and late embryonic mortality in high vs sub fertility heifers - (Peer Reviewed Journal)
Reese, S.T., Geary, T.W., Franco, G.A., Moraes, J.G., Spencer, T.E., Pohler, K.G. 2019. Pregnancy Associated Glycoproteins (PAGs) and late embryonic mortality in high vs sub fertility heifers. Theriogenology. 135:7-12. https://doi.org/10.1016/j.theriogenology.2019.05.026.

Multigenerational Effects - (Book / Chapter)
Roberts, A.J., Hay, E.A. 2019. Multigenerational Effects. In: Funston, R.N., Mulliniks, J.T., editors. Developmental Programming in Livestock Production. Volume 35, Issue 2. Philadelphia, PA: Elsevier. p. 355-364. https://doi.org/10.1016/j.cvfa.2019.02.009.

Effect of supplemental trace minerals on novel measures of bull fertility - (Peer Reviewed Journal)
Geary, T.W., Waterman, R.C., Van Emon, M.L., Ratzburg, C.R., Lake, S., Eik, B.A., Armstrong, D.R., Zezeski, A.L., Heldt, J.S. 2019. Effect of supplemental trace minerals on novel measures of bull fertility. Translational Animal Science. 3(1):1813-1817. https://doi.org/10.1093/tas/txz102.

Assessment of variability in yearlong relative loose mineral intake and range cow productivity in North American northern Great Plains - (Peer Reviewed Journal)
Petersen, M.K., Muscha, J.M., Roberts, A.J. 2019. Assessment of variability in yearlong relative loose mineral intake and range cow productivity in North American northern Great Plains. Journal of Animal Research and Nutrition. 4(2):4. https://doi.org/10.21767/2572-5459.100054.

Increasing accuracy of genomic selection in presence of high density marker panels through the prioritization of relevant polymorphisms - (Peer Reviewed Journal)
Chang, L., Toghiani, S., Aggrey, S.E., Rekaya, R. 2019. Increasing accuracy of genomic selection in presence of high density marker panels through the prioritization of relevant polymorphisms. BMC Genetics. 1-10. https://doi.org/10.1186/s12863-019-0720-5.

A Bayesian approach for analysis of ordered categorical responses subject to misclassification - (Peer Reviewed Journal)
Ling, A., Hay, E.A., Aggrey, S., Rekaya, R. 2018. A Bayesian approach for analysis of ordered categorical responses subject to misclassification. PLoS One. 13(12):e0208433. https://doi.org/10.1371/journal.pone.0208433.

Developmental and reproductive characteristics of beef heifers classified by number of estrous cycles experienced by start of first breeding - (Peer Reviewed Journal)
Roberts, A.J., Ketchum, J.N., Funston, R.N. 2018. Developmental and reproductive characteristics of beef heifers classified by number of estrous cycles experienced by start of first breeding. Translational Animal Science. 3(1):541-548. https://doi.org/10.1093/tas/txy118.

Inbreeding depression in line 1 Hereford cattle population using pedigree and genomic information - (Peer Reviewed Journal)
Sumreddee, P., Toghiani, S., Hay, E.A., Roberts, A.J., Aggrey, S., Rekaya, R. 2018. Inbreeding depression in line 1 Hereford cattle population using pedigree and genomic information. Journal of Animal Science. 97(1):1-18. https://doi.org/10.1093/jas/sky385.

Genomic predictions combining SNP markers and copy number variations in Nellore cattle - (Peer Reviewed Journal)
Hay, E.A., Utsunomiya, Y.T., Xu, L., Neves, H.H., Carvalheiro, R., Bickhart, D.M., Ma, L., Garcia, J.F., Liu, G. 2018. Genomic predictions combining SNP markers and copy number variations in Nellore cattle. BMC Genomics. 19(1):441-449. https://doi.org/10.1186/s12864-018-4787-6.

Influence of vaccination with a combined chemically altered/inactivated BHV-1/BVD vaccine or a modified-live BHV-1/BVD vaccine on reproductive performance in beef cows and heifers - (Peer Reviewed Journal)
Perry, G.A., Geary, T.W., Walker, J.A., Rich, J.J., Northrop, E.J., Perkins, S.D., Mogck, C.L., Van Emon, M.L., Zezeski, A.L., Daly, R.F. 2018. Influence of vaccination with a combined chemically altered/inactivated BHV-1/BVD vaccine or a modified live BHV-1/BVD vaccine on reproductive performance in beef cows and heifers. Bovine Practitioner Journal. 52:53-58.

Effects of copper and zinc supplementation on standard and novel measures of fertility in peripubertal beef bulls [Abstract] - (Abstract Only)
Geary, T.W., Waterman, R.C., Van Emon, M., Zezeski, A.L., Heldt, J., Spears, J. 2018. Effects of copper and zinc supplementation on standard and novel measures of fertility in peripubertal beef bulls [Abstract]. Meeting Abstract. 4.

Effects of pre- and post-insemination maternal plane of nutrition on estrus and embryo development [Abstract] - (Abstract Only)

Effects of pre- and post-insemination maternal plane of nutrition on peripheral and uterine luminal fluid metabolites [Abstract] - (Abstract Only)

Uterine influences on conceptus development in fertility-classified heifers - (Peer Reviewed Journal)
Moraes, J.G., Behura, S.K., Geary, T.W., Hansen, P.J., Neibergs, H.L., Spencer, T.E. 2018. Uterine influences on conceptus development in fertility-classified heifers. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1721191115.