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Abstract

Earlier work has shown that young tropically adapted cattle do not gain weight as rapidly as temperately adapted cattle during the winter in Oklahoma. The objective for this study was to determine whether efficiency of gains was also affected in tropically adapted cattle and whether efficiency was...

Author(s)
Coleman, S. W.; Chase, C. C., Jr.; Phillips, W. A.; Riley, D. G.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 6, pp 2438-2452
Abstract

The objective of this research was to evaluate circulating concentrations of plasma cortisol and measures of temperament at weaning in calves (steers and heifers) and at transport in steers. Calves (n=993) were produced from a 3-breed diallel mating design that included calves from 3 consecutive...

Author(s)
Chase, C. C., Jr.; Randel, R. D.; Riley, D. G.; Coleman, S. W.; Phillips, W. A.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2017, 95, 12, pp 5253-5262
Abstract

The growth endocrine axis influences reproduction. The objectives of this study were to evaluate population genetic characteristics of SNP genotypes within genes of the GH-IGF axis in straightbred and crossbred Angus, Brahman, and Romosinuano heifers (n=650) and to test the association of these...

Author(s)
Luna-Nevarez, P.; Rincon, G.; Medrano, J. F.; Riley, D. G.; Chase, C. C., Jr.; Coleman, S. W.; Leeuwen, D. M. van; Atley, K. L. de; Islas-Trejo, A.; Silver, G. A.; Thomas, M. G.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2011, 89, 4, pp 926-934
AbstractFull Text

Recent assessments of water quality status have identified eutrophication as one of the major causes of water quality "impairment" around the world. In most cases, eutrophication has accelerated by increased inputs of phosphorus and/or nitrogen due to intensification of crop and animal production...

Author(s)
Sigua, G. C.; Coleman, S. W.
Publisher
International Union of Soil Sciences (IUSS), c/o Institut für Bodenforschung, Universität für Bodenkultur, Wien, Austria
Citation
Proceedings of the 19th World Congress of Soil Science: Soil solutions for a changing world, Brisbane, Australia, 1-6 August 2010. Symposium 4.1.2 Management and protection of receiving environments, 2010, pp 94-97
Abstract

The current NRC model to estimate DMI is based on a single equation related to metabolic size and net energy density of the diet; this equation was a significant improvement over previous models. However, observed DMI by grazing animals can be conceptualized by a function that includes animal...

Author(s)
Coleman, S. W.; Gunter, S. A.; Sprinkle, J. E.; Neel, J. P. S.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2014, 92, 7, pp 2775-2784
Abstract

The use of Brahman in cow-calf production offers some adaptation to the harsh characteristics of endophyte-infected tall fescue. Criollo breeds, such as the Romosinuano, may have similar adaptation. The objectives were to estimate genetic effects in Romosinuano, Angus, and crossbred cows for their...

Author(s)
Riley, D. G.; Burke, J. M.; Chase, C. C.; Coleman, S. W.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2016, 94, 1, pp 1-12
Abstract

Ruminant livestock provides meat and dairy products that sustain health and livelihood for much of the world's population. Grazing lands that support ruminant livestock provide numerous ecosystem services, including provision of food, water, and genetic resources; climate and water regulation;...

Author(s)
Steiner, J. L.; Engle, D. M.; Xiao, X. M.; Saleh, A.; Tomlinson, P.; Rice, C. W.; Cole, N. A.; Coleman, S. W.; Osei, E.; Basara, J.; Middendorf, G.; Gowda, P.; Todd, R.; Moffet, C.; Anandhi, A.; Starks, P. J.; Ocshner, T.; Reuter, R.; Devlin, D.
Publisher
Wiley-Blackwell, Boston, USA
Citation
Annals of the New York Academy of Sciences, 2014, 1328, pp 10-17
Abstract

This study was initiated to evaluate performance and patterns of cow traits and blood metabolites of 3 breeds of cows grazing bahiagrass (Paspalum notatum Flügge) pastures in central Florida. Purebred cows (n=411) of either Angus (Bos taurus), Brahman (Bos indicus), or Romosinuano (Bos taurus)...

Author(s)
Coleman, S. W.; Chase, C. C.; Riley, D. G.; Williams, M. J.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2017, 95, 1, pp 139-153
Abstract

The objectives of this work were to: (1) estimate heterosis and breed direct effects for cow reproduction traits of Romosinuano, Angus, and F1 cows in a temperate climate, and (2) assess the effects of the type of forage grazed (bermudagrass, endophyte-infected and endophyte-free tall fescue)...

Author(s)
Riley, D. G.; Burke, J. M.; Chase, C. C., Jr.; Coleman, S. W.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Livestock Science, 2015, 180, pp 22-26
Abstract

The objectives of this work were to compare reproduction and parturition traits of the Criollo breed Romosinuano as straightbred and crossbred cows with Angus and Brahman, to estimate heterosis and direct and maternal genetic breed effects, and to describe calf loss, cow removals from the project,...

Author(s)
Riley, D. G.; Chase, C. C., Jr.; Coleman, S. W.; Olson, T. A.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2014, 92, 5, pp 1902-1910

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