Zobrazeno 1 - 10
of 39
pro vyhledávání: '"P.A.R. Hawken"'
Publikováno v:
Animal, Vol 3, Iss 5, Pp 690-696 (2009)
Stimuli from a prospective mate increase the secretion of luteinising hormone (LH) in sheep. This ‘male effect’ in ewes and ‘female effect’ effect in rams is predominantly mediated by olfactory signals, though it is thought that non-olfactory
Externí odkaz:
https://doaj.org/article/982441bc0ea2456eb29766df7118c0d8
Autor:
Trina Jorre de St Jorre, P.A.R. Hawken, Dominique Blache, Graeme Martin, Christopher J. Scott, Jennifer Rodger, Jeremy Troy Smith, Tammi Esmaili
Publikováno v:
Reproduction, fertility, and development. 31(11)
The neuroendocrine response of female sheep to a novel male involves neural activation in the hypothalamus. However, if males are removed, the gonadotrophic signal declines, so the neural activity is likely to change. We examined Fos-immunoreactive (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a99b88bf3dcc064b7d45ae92cc0a3db8
https://pubmed.ncbi.nlm.nih.gov/31511142
https://pubmed.ncbi.nlm.nih.gov/31511142
Autor:
Graeme Martin, P.A.R. Hawken, Stacey E Rietema, Shane K. Maloney, Margaret Blackberry, Dominique Blache
Publikováno v:
Domestic Animal Endocrinology. 53:78-87
Even in the absence of stressors, temperament is associated with changes in the concentration of stress-responsive hormones and, possibly because of such changes, temperament can affect metabolism. We tested whether, in sheep bred for temperament for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51cb0f666839e6a0628e90b66a702974
https://doi.org/10.1016/j.domaniend.2015.05.005
https://doi.org/10.1016/j.domaniend.2015.05.005
Publikováno v:
Physiology & Behavior. 105:1117-1123
Growing concerns about the risk of addiction to benzodiazepines have led to increasing interest in alternative therapies to treat anxiety and depression. Lavender oil (Lavendula augustifolia) is reportedly anxiolytic in a number of species but little
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7dcf2d4326a0fd364a75f8c3b297fa2a
https://doi.org/10.1016/j.physbeh.2011.12.005
https://doi.org/10.1016/j.physbeh.2011.12.005
Autor:
P.A.R. Hawken, Andrew P Beard
Publikováno v:
Animal Reproduction Science. 111:249-260
This study compared the affect of short-term and continuous exposure to rams during the transition between anoestrus and the breeding season on the distribution of mating and subsequent lambing. Further, within ewes continuously exposed to rams we in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f813f179d2aca7ed87a9796dd8503f40
https://doi.org/10.1016/j.anireprosci.2008.03.009
https://doi.org/10.1016/j.anireprosci.2008.03.009
Publikováno v:
Animal Reproduction Science. 106:333-344
The ram effect is widely used in Mediterranean breeds of sheep but its use in temperate genotypes is restricted by breed seasonality. However, ewes from these highly seasonal genotypes are sensitive to stimulation by rams close to the onset of the na
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::901c459552cb8001beadc594e49b19ad
https://doi.org/10.1016/j.anireprosci.2007.05.009
https://doi.org/10.1016/j.anireprosci.2007.05.009
Publikováno v:
Animal Reproduction Science. 84:349-358
Two experiments were conducted to examine the effects of ram exposure during the breeding season, in combination with progestagen treatment on estrus synchronization, fertility the LH surge and ovulation in ewes. Experiment 1 was subdivided into expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d342f762bf897936169a5a573fab31f
https://doi.org/10.1016/j.anireprosci.2003.12.013
https://doi.org/10.1016/j.anireprosci.2003.12.013
Publikováno v:
Animal, Vol 3, Iss 5, Pp 690-696 (2009)
Stimuli from a prospective mate increase the secretion of luteinising hormone (LH) in sheep. This ‘male effect’ in ewes and ‘female effect’ effect in rams is predominantly mediated by olfactory signals, though it is thought that non-olfactory
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf7fa727c569693fd0dbfe2c9af62cae
https://pubmed.ncbi.nlm.nih.gov/22444447
https://pubmed.ncbi.nlm.nih.gov/22444447
Publikováno v:
Animal reproduction science. 108(1-2)
In this study, we tested whether prior experience with rams would modify the behavioural and endocrine responses of maiden ewes to rams. During mid-anoestrus, sexually naive, maiden ewes were exposed to rams for 7 days (ram experienced, RE; n=61) or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96c1b4d862a548468d35f64eb65e48c0
https://pubmed.ncbi.nlm.nih.gov/17698305
https://pubmed.ncbi.nlm.nih.gov/17698305
Autor:
Dominique Blache, Graeme Martin, Tammy Esmaili, Andrew P Beard, P.A.R. Hawken, A.C.O. Evans, Hiroya Kadokawa
Publikováno v:
Theriogenology. 68(1)
Application of the ram effect during the breeding season has been previously disregarded because the ewe reproductive axis is powerfully inhibited by luteal phase progesterone concentrations. However, anovulatory ewes treated with exogenous progestag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3cc71dcb64ffbc39ba277077ab0efb8
https://pubmed.ncbi.nlm.nih.gov/17477966
https://pubmed.ncbi.nlm.nih.gov/17477966