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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
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

In an effort to determine whether tropical adaptation influences circulating concentrations of the growth-related hormone IGF-I, 3-breed diallel matings were conducted using temperate Bos taurus (Angus), tropical Bos indicus (Brahman), and tropical Bos taurus (Romosinuano). Purebred Angus, Braham,...

Author(s)
Caldwell, L. C.; Chase, C. C., Jr.; Riley, D. G.; Coleman, S. W.; Phillips, W. A.; Spicer, L. J.; Welsh, T. H., Jr.; Randel, R. D.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2011, 89, 12, pp 4017-4022
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
Abstract

The objectives of this work were to compare the Criollo breed Romosinuano as straightbred and crossbred cows with Angus and Brahman in subtropical Florida and to estimate heterosis for size traits of their calves, their own weight, and maternal efficiency traits. Cows (n=404) were born from 2002 to ...

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 1911-1919
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 study were to characterize rectal temperature and coat score under subtropical North American summer conditions for straightbred and crossbred Romosinuano, Brahman, and Angus cattle, to estimate heterosis and breed direct and maternal effects in a subset of those, and to...

Author(s)
Riley, D. G.; Chase, C. C., Jr.; Coleman, S. W.; Olson, T. A.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Livestock Science, 2012, 148, 1/2, pp 109-118
Abstract

The objectives of this work were to estimate heterosis and breed genetic effects for carcass quantity, quality, and palatability traits of steers (Bos spp.) produced from matings of Romosinuano, Brahman, and Angus cattle. Steers (n=464) were weaned at 7 mo of age and transported to the Southern...

Author(s)
Riley, D. G.; Chase, C. C., Jr.; Coleman, S. W.; Phillips, W. A.; Miller, M. F.; Brooks, J. C.; Johnson, D. D.; Olson, T. A.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2012, 90, 7, pp 2159-2166

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