Search Results - "Riley, D.G."

Effect of ewe birth litter size and estimation of genetic parameters on ewe reproductive life traits by Hulsman Hanna, L.L., Taylor, J.B., Holland, P.W., Vonnahme, K.A., Reynolds, L.P., Riley, D.G.

“…•Effect of a ewe’s litter size at birth on productive life traits was evaluated.•Columbia, Polypay, Rambouillet, and Targhee ewes in range systems were…”
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Genetic parameters for FAMACHA © score and related traits for host resistance/resilience and production at differing severities of worm challenge in a Merino flock in South Africa by Riley, D.G., Van Wyk, J.A.

“…The objectives of this study were to estimate genetic parameters for FAMACHA © score and related traits at different levels of worm challenge in sheep and to…”
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Water intake and factors affecting water intake of growing beef cattle by Brew, M.N., Myer, R.O., Hersom, M.J., Carter, J.N., Elzo, M.A., Hansen, G.R., Riley, D.G.

“…A study was conducted to measure water intake in 7 to 9 mo old growing beef cattle, and to determine the effect of breed composition, gender, dry matter intake…”
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Genetic assessment of rectal temperature and coat score in Brahman, Angus, and Romosinuano crossbred and straightbred cows and calves under subtropical summer conditions by Riley, D.G., Chase, C.C., Coleman, S.W., Olson, T.A.

“…The objectives of this study were to characterize rectal temperature and coat score under subtropical North American summer conditions for straightbred and…”
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The effects of penalization of FAMACHA© scores of lambs treated for internal parasites on the estimation of genetic parameters and prediction of breeding values by Riley, D.G., Van Wyk, J.A.

“…Internal parasite infestation in sheep can be practically assessed using a subjective score for the color of the inner eyelid (FAMACHA© score). Additive…”
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Whole genome association of SNP with newborn calf cannon bone length by Riley, D.G., Welsh, T.H., Gill, C.A., Hulsman, L.L., Herring, A.D., Riggs, P.K., Sawyer, J.E., Sanders, J.O.

“…The objective of this study was to describe associations between 34,957 SNP genotypes and newborn calf cannon bone length in a crossbred Bos indicus–Bos taurus…”
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Effect of growth hormone administration to mature miniature Brahman cattle treated with or without insulin on circulating concentrations of insulin-like growth factor-I and other metabolic hormones and metabolites by Chase, C.C., Elsasser, T.H., Spicer, L.J., Riley, D.G., Lucy, M.C., Hammond, A.C., Olson, T.A., Coleman, S.W.

“…Previously, we determined that a primary cause of proportional stunted growth in a line of Brahman cattle was related to an apparent refractoriness in…”
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Factors influencing tenderness in steaks from Brahman cattle by Riley, D.G., Johnson, D.D., Chase, C.C., West, R.L., Coleman, S.W., Olson, T.A., Hammond, A.C.

“…The objective of this study was to identify a set of explanatory variables for Warner–Bratzler shear force and myofibril fragmentation indices after 7, 14, and…”
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Fecal shedding of foodborne pathogens by Florida-born heifers and steers in U.S. beef production segments by Riley, D G, Loneragan, G H, Phillips, W A, Gray, J T, Fedorka-Cray, P J

“…The objective in this study was to assess breed effects in fecal prevalence of Escherichia coli O157:H7 in heifers on a development program in Florida and in…”
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Escherichia coli O157:H7 prevalence in fecal samples of cattle from a southeastern beef cow-calf herd by Riley, D G, Gray, J T, Loneragan, G H, Barling, K S, Chase, Jr, C C

“…The proportion of fecal samples culture-positive for Escherichia coli O157:H7 was determined for samples collected from 296 beef cows on pasture in a single…”
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1 Repeated muscle collections induce few physiological changes in mature sedentary horses by Simons, J.L., Wesolowski, L.T., Semanchik, P.L., Riley, D.G., White-Springer, S.H., Norton, S.A.

“…Repeated skeletal muscle collections are often used to determine tissue-specific responses to interventions or stressors but little is known about the…”
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14 Systemic and local antioxidant status is unaffected by repeated gluteal muscle collections in mature sedentary horses by Isles, J.K., Simons, J.L., Wesolowski, L.T., Semanchik, P.L., Riley, D.G., Norton, S.A., White-Springer, S.H.

“…Repeated skeletal muscle tissue collections are routinely utilized in research settings to determine the effects of various interventions or stressors on the…”
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3  Weanling Thoroughbred mitochondrial profiles are related to race performance metrics by Guy, C.P., Latham, C.M., Owen, R.N., Fowler, A.L., Fenger, C.K., Riley, D.G., White-Springer, S.H.

“…Few physiological markers have been identified to predict performance potential in juvenile horses. Within racing, performance is difficult to quantify due to…”
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Effect of prenatal transportation stress on DNA methylation in Brahman heifers by Baker, E.C., Cilkiz, K.Z., Riggs, P.K., Littlejohn, B.P., Long, C.R., Welsh, T.H., Randel, R.D., Riley, D.G.

“…•Prenatal transportation stress altered DNA methylation of Brahman heifers.•Sites are differentially in the prenatally stress group relative to control…”
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Shedding and characterization of gastrointestinal nematodes of growing beef heifers in Central Texas by Riley, D.G., Sawyer, J.E., Craig, T.M.

“…•Bos indicus crossbred females had higher fecal eggs as calves than as yearlings.•More Bos indicus background had higher eggs per gram of feces through 1 year…”
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Comparative performance of Dorper and Rambouillet ewes on West Texas range by Riley, D.G., Thorne, J.W., Redden, R.R., Herring, A.D., Waldron, D.F.

“…•Fertility of Dorper ewes did not differ from Rambouillet.•Dorper ewes had higher number of lambs born per litter than Rambouillet.•Dorper ewes had higher…”
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Genome association of carcass and palatability traits from Bos indicus-Bos taurus crossbred steers within electrical stimulation status and correspondence with steer temperament 3. Aroma and flavor attributes of cooked steaks by Riley, D.G., Mantilla-Rojas, C., Miller, R.K., Nicholson, K.L., Gill, C.A., Herring, A.D., Riggs, P.K., Sawyer, J.E., Savell, J.W., Sanders, J.O.

“…•Electrical stimulation of nellore-angus carcasses influenced 5 of 30 steak flavors.•SNP on BTA 4, 5, and 12 were associated with cooked beef lean flavor.•Two…”
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Trigonometric functions representing annual winter coat shedding and regrowth in Angus cows by Riley, D.G., Sawyer, J.E., Sanders, J.O.

“…Subjective scores (n=2603) representing (1) the shedding and regrowth of winter coat and (2) total quantity of hair were recorded monthly for 2yr for 135 Angus…”
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Genome association of carcass and palatability traits from Bos indicus-Bos taurus crossbred steers within electrical stimulation status and correspondence with steer temperament 1. Carcass by Riley, D.G., Miller, R.K., Nicholson, K.L., Gill, C.A., Herring, A.D., Riggs, P.K., Sawyer, J.E., Savell, J.W., Sanders, J.O.

“…•Six SNP on BTA 23 were associated with lean or overall maturity of carcasses.•A single SNP was associated with skeletal maturity on BTA 1.•Associated SNP:…”
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Genome association of carcass and palatability traits from Bos indicus-Bos taurus crossbred steers within electrical stimulation status and correspondence with steer temperament 2. Palatability by Riley, D.G., Miller, R.K., Nicholson, K.L., Gill, C.A., Herring, A.D., Riggs, P.K., Sawyer, J.E., Savell, J.W., Sanders, J.O.

“…•Nine SNP on BTA 29 were associated with tenderness traits.•One SNP on BTA 4 was associated with juiciness score.•Associations on BTA 29 may be affiliated with…”
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