The 'Ram Effect': A 'Non-Classical' Mechanism for Inducing LH Surges in Sheep.

Autor: Claude Fabre-Nys, Audrey Chanvallon, Joëlle Dupont, Lionel Lardic, Didier Lomet, Stéphanie Martinet, Rex J Scaramuzzi

Publikováno v: PLoS ONE, Vol 11, Iss 7, p e0158530 (2016)

During spring sheep do not normally ovulate but exposure to a ram can induce ovulation. In some ewes an LH surge is induced immediately after exposure to a ram thus raising questions about the control of this precocious LH surge. Our first aim was to

Externí odkaz: https://doaj.org/article/b50a957448dd4d5a9bef8f8ebd78ea44

Particularités de la reproduction des vaches allaitantes de races françaises

Autor: S. Chastant, F. Constant, Audrey Chanvallon, G. Chambon, B. Grimard, Jacques Agabriel

Publikováno v: INRA Productions Animales
INRA Productions Animales, INRA Editions, 2017, 30 (2), pp.125-138
INRA Productions Animales, Paris: INRA, 2017, 30 (2), pp.125-138
INRA Productions Animales 2 (30), 125-138. (2017)

La reproduction des vaches allaitantes présente des particularités par rapport à celle des vaches laitières. Améliorer leur reproduction est un levier pour augmenter leur productivité. Les génisses de race à viande sont pubères lorsqu’elle

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80d7c9b3b08bac641a604b78af413949
https://doi.org/10.20870/productions-animales.2017.30.2.2239

New insights into the influence of breed and time of the year on the response of ewes to the ‘ram effect’

Autor: Audrey Chanvallon, L. Sagot, T. Fassier, Dominique François, C. Fabre-Nys, Nathalie Debus, Rex J. Scaramuzzi, E. Pottier

Publikováno v: Animal, Vol 5, Iss 10, Pp 1594-1604 (2011)
animal
animal, Cambridge University Press (CUP), 2011, 5 (10), pp.1594-1604. ⟨10.1017/S1751731111000668⟩
Animal
Animal, Published by Elsevier (since 2021) / Cambridge University Press (until 2020), 2011, 5 (10), pp.1594-1604. ⟨10.1017/S1751731111000668⟩
Animal 10 (5), 1594-1604. (2011)
animal, Published by Elsevier (since 2021) / Cambridge University Press (until 2020), 2011, 5 (10), pp.1594-1604. ⟨10.1017/S1751731111000668⟩

Exposure of anoestrous ewes to rams induces an increase in LH secretion, eventually leading to ovulation. This technique therefore is an effective, low-cost and hormone-free way of mating sheep outside the breeding season. However, the use of this te

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfcaced2e2452bdb4209cbc2c4bd51e6
http://www.sciencedirect.com/science/article/pii/S1751731111000668

Comparison of three devices for the automated detection of estrus in dairy cows

Autor: Stéphanie Coyral-Castel, Clément Allain, Pierre Clement, Jean-Michel Lamy, Julie Gatien, Daniéle Ribaud, Pascal Salvetti, Audrey Chanvallon

Publikováno v: Theriogenology
Theriogenology, Elsevier, 2014, 82 (5), pp.734-41. ⟨10.1016/j.theriogenology.2014.06.010⟩

International audience; Considerable technological advances have been made in the automated detection of estrus in dairy cattle, but few studies have evaluated their relative performance on the same animals or assessed cow-related factors that affect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cb99cf9de41fbccb669064b0b406a5c
https://hal.inrae.fr/hal-02635829

The 'Ram Effect': A 'Non-Classical' Mechanism for Inducing LH Surges in Sheep

Autor: C. Fabre-Nys, Joëlle Dupont, Audrey Chanvallon, Stéphanie Martinet, Lionel Lardic, Didier Lomet, Rex J. Scaramuzzi

Publikováno v: PLoS One
PLoS ONE, Vol 11, Iss 7, p e0158530 (2016)
PLoS ONE
PLoS ONE, Public Library of Science, 2016, 11 (7), pp.1-22. ⟨10.1371/journal.pone.0158530 ⟩
PLoS ONE, Public Library of Science, 2016, 11 (7), pp.1-22. ⟨10.1371/journal.pone.0158530⟩
Plos One 7 (11), 1-22. (2016)

Remerciements : INRA, Domaine de la Sapinière,18390 OSMOY, Centre Val de Loire; During spring sheep do not normally ovulate but exposure to a ram can induce ovulation. In some ewes an LH surge is induced immediately after exposure to a ram thus rais

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69744851e673babfd3bc88fb7dc0a6bd
https://researchonline.rvc.ac.uk/id/eprint/10474/1/10474.pdf