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Autor:
D.J. Byerley, Ronald D. Randel, James G. Berardinelli, Horacio Cardenas, R. Adair, D. D. Lunstra, R.W. Godfrey
Publikováno v:
Theriogenology. 37:641-654
The objective of this study was to evaluate seasonal changes of cortisol and prolactin (PRL) concentrations in Brahman and Hereford bulls moved to locations that differ in geographical and environmental conditions. Postpubertal Hereford bulls from Mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b39213bc3aad3eb6bbba3818f8470920
https://doi.org/10.1016/0093-691x(92)90144-g
https://doi.org/10.1016/0093-691x(92)90144-g
Autor:
R.W Godfrey, R.E Dodson
Publikováno v:
Alternative Health Practices for Livestock
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::447573d6f5df5c53ebc305edfe86e0f1
https://doi.org/10.1002/9780470384978.ch6
https://doi.org/10.1002/9780470384978.ch6
Autor:
Ronald D. Randel, P.G. Harms, N H McArthur, R.W. Godfrey, Don A Neuendorff, C. J. Nolan, Thomas H. Welsh
Publikováno v:
Journal of Animal Science. 68:1087-1096
Twelve Brahman bulls (paired by sire, weight and age) were assigned randomly and limit fed to gain either .10 to .25 (moderate gain; MG) or .75 to 1.0 (high gain: HG) kg.hd-1.d-1 to examine the effect of dietary energy on onset of puberty. Hip height
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::950f618e16eb96bb9e699d9870a1ad1c
https://doi.org/10.2527/1990.6841087x
https://doi.org/10.2527/1990.6841087x
Publikováno v:
Journal of animal science. 69(1)
Brahman (n = 9) and 1/2 Simmental x 1/4 Brahman x 1/4 Hereford (n = 11) calves were utilized to determine the influence of exposure to cold on the physiology of the neonate. All calves were removed from their dams within 20 min of birth and prior to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77c4ca6ec15e2a70c259fd026fb4d484
https://pubmed.ncbi.nlm.nih.gov/2005021
https://pubmed.ncbi.nlm.nih.gov/2005021
Autor:
T G Jenkins, D D Lunstra, Ronald D. Randel, James G. Berardinelli, Don A Neuendorff, R.W. Godfrey, Charles R. Long
Publikováno v:
Journal of animal science. 68(6)
To determine the effects of location and season on growth of bulls, Hereford bulls from Montana (MH; n = 15) and Nebraska (NH; n = 15) and Brahman bulls from Texas and Louisiana (BB; n = 18) were moved to three locations: Montana (MT), Nebraska (NE)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa68245d8335d100039279c20a19e461
https://pubmed.ncbi.nlm.nih.gov/2384353
https://pubmed.ncbi.nlm.nih.gov/2384353
Autor:
Charles R. Long, Ronald D. Randel, D D Lunstra, Don A Neuendorff, M J Guthrie, R.W. Godfrey, James G. Berardinelli, T G Jenkins
Publikováno v:
Journal of animal science. 68(3)
Hereford bulls from Montana (MH; n = 15) and Nebraska (NH; n = 15) and Brahman bulls from Texas (BB; n = 18) were relocated to one of three locations (LOC): Montana (MT), Nebraska (NE) or Texas (TX). All bulls were pubertal at the time of relocation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfd37492ca59bffe795652a90b33e519
https://pubmed.ncbi.nlm.nih.gov/2318736
https://pubmed.ncbi.nlm.nih.gov/2318736
Publikováno v:
Journal of Animal Science. 60:760-765
This study was conducted to evaluate the influence of age, breed, epididymectomy and semen processing on the concentration of estradiol-17 beta (E2) in bovine semen. Semen was collected either by electroejaculation or with an artificial vagina. Neat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d99598c531bd23dc6f7f95a26307770f
https://doi.org/10.2527/jas1985.603760x
https://doi.org/10.2527/jas1985.603760x
Relationships among parity, pregnancy and endocrine events before and after estrus in Brahman cattle
Publikováno v:
Theriogenology. 32:939-948
Brahman cows and heifers were utilized to evaluate the effects of parity and pregnancy on the endocrine events around estrus. Fifty-two virgin heifers, 22 primiparous cows and 41 multiparous cows were randomly allotted within parity to receive one in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d6ffee1106efc00280b588c1fcc58d3
https://doi.org/10.1016/0093-691x(89)90503-7
https://doi.org/10.1016/0093-691x(89)90503-7
Publikováno v:
Theriogenology. 30:1059-1068
Results of Breeding Soundness Evaluations (BSE) used to select Santa Gertrudis bulls over a 10-yr period were analyzed in retrospect to determine the effect on bulls in subsequent generations. Bulls were tested at three ages: 16 mo (n = 1,936), 20 mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58f20ede8c1111b0d8dc8673f125abf1
https://doi.org/10.1016/0093-691x(88)90280-4
https://doi.org/10.1016/0093-691x(88)90280-4