Zobrazeno 1 - 10
of 90
pro vyhledávání: '"R. J. Christopherson"'
Autor:
R. J. Hudson, R. J. Christopherson
Publikováno v:
Bioenergetics of Wild Herbivores ISBN: 9781351070218
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f912367626efdde96dddb69eeeccc99
https://doi.org/10.1201/9781351070218-6
https://doi.org/10.1201/9781351070218-6
Publikováno v:
Canadian Journal of Animal Science. 85:157-164
Thirty-six steers were used to determine the effects of acute cold (-20°C) and acute feed restriction (0.4× maintenance) on mRNA abundance of five candidate genes. To investigate adaptational physiology in cattle we evaluated gene expression patter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32e1058fa553a241e359b5df5d67d700
https://doi.org/10.4141/a03-104
https://doi.org/10.4141/a03-104
Publikováno v:
Canadian Journal of Animal Science. 85:177-183
Twelve yearling crossbred beef heifers weighing 454 ± 31 kg were randomly assigned to either 0 h (control), 5 h (5CE; 0800 to 1300) or 10 h (10CE; 0800 to 1800) of cold exposure (-20°C) daily to determine the effect of daily cold exposures of diffe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::768f2bd2f1d004def61e0746bd624894
https://doi.org/10.4141/a04-021
https://doi.org/10.4141/a04-021
Autor:
J. B. Robinson, W. Whitmore, M. Okamoto, B. A. Young, G. Diebold, G. Murdoch, R. J. Christopherson, B. Zimmermann, J. Galbraith, Rainer Mosenthin
Publikováno v:
Canadian Journal of Animal Science. 83:739-748
Three experiments were conducted with lambs to test the hypothesis that the phosphodiesterase inhibitor/adenosine blocker, aminophylline would enhance metabolic rate and delay the development of hypothermia. In exp. 1, eight lambs were treated either
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67acf3c8e72bd9da3d7679c79a92ede1
https://doi.org/10.4141/a03-013
https://doi.org/10.4141/a03-013
Publikováno v:
Canadian Journal of Animal Science. 82:165-172
Three experiments were conducted to test the hypothesis that vasoactive intestinal polypeptide (VIP) infused into the gastric artery and exposure to a low temperature will increase feed intake, duodenal flow and amino acid supply to the small intesti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d1bd1edc1cbb789b78fe06f78f6fe45
https://doi.org/10.4141/a01-010
https://doi.org/10.4141/a01-010
Publikováno v:
Canadian Journal of Animal Science. 82:79-86
Guanfacin, an α2-adrenoceptor agonist, reduces heat production in cold-stressed, but not heat-stressed animals. Growth rate, feed intake, metabolic rate, ileal and fecal digestibility were measured in 16 pigs, housed in neutral (20.4 ± 1.7°C), hot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b984144ea46194d654773857efd00436
https://doi.org/10.4141/a01-026
https://doi.org/10.4141/a01-026
Publikováno v:
Canadian Journal of Animal Science. 81:459-465
Crossbred beef heifers (n = 18) fed at 1.3× maintenance were exposed to summer daytime temperatures (20 ± 0.2°C) for 8 h (08:00 until 16:00) and to control (22°C), moderate (–6°C) or cold (–15°C) environments for 16 h daily (16:00 until 08:
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f33a926af7a800e69e757c48d7ab11e
https://doi.org/10.4141/a00-118
https://doi.org/10.4141/a00-118
Publikováno v:
Canadian Journal of Animal Science. 80:605-613
Sixteen lambs were studied to examine the effects of cold environment and a beta-agonist on their immune status. The beta-agonist, L-646, 969, was fed for 4 wk at 0.28 or 0 mg kg−0.75 BW to animals housed in a warm (20 °C) or a moderately cold (0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6540d4d97089be7f869e3df96c0385a4
https://doi.org/10.4141/a99-106
https://doi.org/10.4141/a99-106
Publikováno v:
Canadian Journal of Animal Science. 80:459-465
A 2 × 2 factorial experiment was conducted to study the effects of the beta-adrenergic agonist L-644,969 (BAA, supplied at 0.28 vs. 0 mg kg−0.75 d−1) on growth performance, carcass traits and nitrogen balance of lambs at two environmental temper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1eef62b8d8c5d6c560ebdf48d441b45
https://doi.org/10.4141/a99-076
https://doi.org/10.4141/a99-076
Publikováno v:
Canadian Journal of Animal Science. 80:343-353
Four crossover design experiments were conducted with sheep to test the hypothesis that vasoactive intestinal polypeptide (VIP) affects gastrointestinal motility with implications for digesta flow. Sheep were shorn and surgically prepared with electr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a9a1869a7e32794b73ccac11fbd71f6
https://doi.org/10.4141/a99-073
https://doi.org/10.4141/a99-073