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Abstract

Our primary objective of this experiment was to evaluate potential genetic differences between two diverse Bos taurus breeds [Angus (AG) and Romosinuano (RO)] in response to an endotoxin challenge. Eighteen steers (n=9 steers/breed; 299.4±5.2 kg BW) were acclimated to environmentally controlled...

Author(s)
Carroll, J. A.; Burdick, N. C.; Reuter, R. R.; Chase, C. C., Jr.; Spiers, D. E.; Arthington, J. D.; Coleman, S. W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Domestic Animal Endocrinology, 2011, 41, 4, pp 163-173
Abstract

The influence of additive and nonadditive genetic effects and temperament on 4 postweaning feed intake and growth traits was evaluated in a group of 581 bull, heifer, and steer calves born in 3 Florida herds in 2006 and 2007. Calves had breed compositions ranging from 100% Angus (A) to 100% Brahman ...

Author(s)
Elzo, M. A.; Riley, D. G.; Hansen, G. R.; Johnson, D. D.; Myer, R. O.; Coleman, S. W.; Chase, C. C.; Wasdin, J. G.; Driver, J. D.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2009, 87, 12, pp 3877-3886
Abstract

Previously, we determined that a primary cause of proportional stunted growth in a line of Brahman cattle was related to an apparent refractoriness in metabolic response to GH in young animals. The objective of this study was to determine the effect of administration of GH, insulin (INS), and GH...

Author(s)
Chase, C. C., Jr.; Elsasser, T. H.; Spicer, L. J.; Riley, D. G.; Lucy, M. C.; Hammond, A. C.; Olson, T. A.; Coleman, S. W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Domestic Animal Endocrinology, 2011, 41, 1, pp 1-13
Abstract

A study was performed to evaluate differences in thermoregulatory ability of 2 Bos taurus breeds with known differences in heat tolerance. Nine Angus (AG; 304±7 kg of BW) and 9 Romosinuano (RO; 285±7.5 kg of BW) steers were transported to the Brody Environmental Center at the University of...

Author(s)
Scharf, B.; Carroll, J. A.; Riley, D. G.; Chase, C. C., Jr.; Coleman, S. W.; Keisler, D. H.; Weaber, R. L.; Spiers, D. E.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2010, 88, 7, pp 2321-2336
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

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 objectives of this work were to estimate genetic effects for age and size at estimated time of first conception, and temperament in straightbred and crossbred heifers (n=554) produced from Romosinuano, Brahman, and Angus cattle, and to evaluate first-parturition performance of heifers,...

Author(s)
Riley, D. G.; Chase, C. C., Jr.; Coleman, S. W.; Olson, T. A.; Randel, R. D.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2010, 88, 10, pp 3173-3182
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 objective of this study was to quantify the genetic diversity among breeds under evaluation for tropical adaptability traits that affect the performance of beef cattle at the USDA/ARS SubTropical Agricultural Research Station (STARS) near Brooksville, FL, USA. Twenty-six microsatellite loci...

Author(s)
Brenneman, R. A.; Chase, C. C., Jr.; Olson, T. A.; Riley, D. G.; Coleman, S. W.
Publisher
Blackwell Publishing, Oxford, UK
Citation
Animal Genetics, 2007, 38, 1, pp 50-53

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