Zobrazeno 1 - 10
of 37
pro vyhledávání: '"F.H Austin"'
Autor:
C. M. Carroll, Maurice P. Boland, N. Leonard, F.H. Austin, James F. Roche, P. B. Lynch, W.J. Enright, Leon J. Spicer
Publikováno v:
Animal Science. 63:297-306
The objective of this study was to investigate the effect of low food intake on post-weaning fertility and hormone concentrations in primiparous sows. One hundred and forty primiparous sows (Landrace × Large White) were randomly assigned to one of f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6b6e2345676597a17df2871f710bafa
https://doi.org/10.1017/s1357729800014855
https://doi.org/10.1017/s1357729800014855
Publikováno v:
Animal Science. 59:321-326
The objective was to determine the effects of avoparcin, bovine somatotropin (bST) and the additive effects of both avoparcin and bST on milk yield, milk composition, live-weight changes and reproduction parameters in post-partum dairy cows. Forty-ei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b4f92ff644081f8390e4410994d4f75
https://doi.org/10.1017/s0003356100007844
https://doi.org/10.1017/s0003356100007844
Publikováno v:
Domestic Animal Endocrinology. 8:471-480
The aim of the experiment was to determine the acute and chronic effects of the beta-agonist, cimaterol, on plasma hormone and metabolite concentrations in steers. Twelve Friesian steers (liveweight = 488 +/- 3 kg) were randomly assigned to receive e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16fb77bb8f06d5d0b1d8eb6a293abc3c
https://doi.org/10.1016/0739-7240(91)90016-d
https://doi.org/10.1016/0739-7240(91)90016-d
Autor:
Maurice P. Boland, D.H. Williams, James F. Roche, F.H. Austin, E. Lambert, P.B. Lynch, T.A. McGeady, T.J. Hanrahan
Publikováno v:
Theriogenology. 36:655-665
The potential litter size of gilts that is based on the ovulation rate is much higher than the actual litter size, which depends on the fertilization rate and subsequent prenatal mortality. Prenatal mortality is divided into embryonic mortality (befo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c54055311778ead5feaadb2fff0ca4a
https://doi.org/10.1016/0093-691x(91)90403-z
https://doi.org/10.1016/0093-691x(91)90403-z
Autor:
James F. Roche, Maurice P. Boland, P.B. Lynch, T.J. Hanrahan, T.A. McGeady, E. Lambert, D.H. Williams, F.H. Austin
Publikováno v:
Theriogenology. 36:77-85
In gilts ovulation occurs over a 4 to 8-hour period, with 70% of the ova being shed over a relatively short span of time. These oocytes supposedly give rise to more developed embryos at Days 10 to 12 which advance the uterine environment and reduce s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a75389141da74e03425214e15a2b35a
https://doi.org/10.1016/0093-691x(91)90436-h
https://doi.org/10.1016/0093-691x(91)90436-h
Publikováno v:
Journal of Dairy Science. 74:2165-2171
This experiment was conducted to evaluate the effect of bST on average daily gain, onset of puberty, first lactation milk yield, and reproductive efficiency in Friesian heifers. Heifers (n = 16 per treatment) were allocated to either: 1) control (1.5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1671496e53806cf7c6264374fc19b0cc
https://doi.org/10.3168/jds.s0022-0302(91)78389-6
https://doi.org/10.3168/jds.s0022-0302(91)78389-6
Publikováno v:
Livestock Production Science. 26:263-275
Three hundred and four hybrid pigs were implanted at 35–40 kg and slaughtered at 75–80 kg body weight in an effort to determine the effects of anabolic steroid implants on growth rate, carcass characteristics and reproductive organs of growing pi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6c3f61a5a211fd1e60de4e037efd95d
https://doi.org/10.1016/0301-6226(90)90064-d
https://doi.org/10.1016/0301-6226(90)90064-d
Publikováno v:
Journal of animal science. 71(4)
The objectives of this experiment were: 1) to determine whether feeding cimaterol to male calves from 4 wk of age until slaughter at target live weights of 275, 375, or 475 kg would result in a sustained increase in growth rate and feed conversion ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cc0dea09ca5858684c93f50d5133448
https://pubmed.ncbi.nlm.nih.gov/8097508
https://pubmed.ncbi.nlm.nih.gov/8097508
Autor:
F H Chikhou, A.P. Moloney, R.L. Joseph, Paul Allen, James F. Roche, J.F. Quirke, F.H. Austin, P.V. Tarrant
Publikováno v:
Journal of animal science. 71(4)
The objectives of this study were to examine the effects of long-term administration of cimaterol to steers from 4 wk of age until slaughter at target live weights of 275, 375, and 475 kg on 1) carcass composition; 2) distribution and growth of the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::347d140aef3a9591d85b3f5969926c12
https://pubmed.ncbi.nlm.nih.gov/8097509
https://pubmed.ncbi.nlm.nih.gov/8097509
Publikováno v:
Proceedings of the British Society of Animal Production (1972). 1993:131-131
Thirty to forty per cent of sows in Irish herds are culled annually, one third of which are for reproductive problems such as anoestrus, anovulation and small litter size. Causes of reproductive failure include genetic, nutritional, environmental and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7492342d3bfb5d7474141ccbdc608d3
https://doi.org/10.1017/s0308229600024570
https://doi.org/10.1017/s0308229600024570