Search Results - "Chanvallon, Audrey"

Comparison of three devices for the automated detection of estrus in dairy cows by Chanvallon, Audrey, Coyral-Castel, Stéphanie, Gatien, Julie, Lamy, Jean-Michel, Ribaud, Daniéle, Allain, Clément, Clément, Pierre, Salvetti, Pascal

“…Considerable technological advances have been made in the automated detection of estrus in dairy cattle, but few studies have evaluated their relative…”
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The "Ram Effect": A "Non-Classical" Mechanism for Inducing LH Surges in Sheep by Fabre-Nys, Claude, Chanvallon, Audrey, Dupont, Joëlle, Lardic, Lionel, Lomet, Didier, Martinet, Stéphanie, Scaramuzzi, Rex J

“…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…”
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In sexually naive anestrous ewes, male odour is unable to induce a complete activation of olfactory systems by Chanvallon, Audrey, Fabre-Nys, Claude

“…Exposure of anestrous females to a ram or his odour induces rapid secretion of LH that can lead to ovulation. This response is mediated by the main olfactory…”
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Plasma and ovarian oestradiol and the variability in the LH surge induced in ewes by the ram effect by Fabre-Nys, Claude, Chanvallon, Audrey, Debus, Nathalie, François, Dominique, Bouvier, Frédéric, Dupont, Joelle, Lardic, Lionel, Lomet, Didier, Ramé, Christelle, Scaramuzzi, Rex J

“…The proportion of anoestrous ewes ovulating after exposure to a sexually active ram is variable mainly due to whether an LH surge is induced. The aim of this…”
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New insights into the influence of breed and time of the year on the response of ewes to the ‘ram effect’ by Chanvallon, A., Sagot, L., Pottier, E., Debus, N., François, D., Fassier, T., Scaramuzzi, R. J., Fabre-Nys, C.

“…Exposure of anoestrous ewes to rams induces an increase in LH secretion, eventually leading to ovulation. This technique therefore is an effective, low-cost…”
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Early sexual experience and stressful conditions affect the response of young ewes to the male by Chanvallon, A, Scaramuzzi, R.J, Fabre-Nys, C

“…Abstract Exposure of anoestrous ewes to rams induces oestrous cycles (the ‘ram effect’). This response is poor in young-sexually naive females, possibly…”
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Sexual experience and temperament affect the response of Merino ewes to the ram effect during the anoestrous season by Chanvallon, A., Blache, D., Chadwick, A., Esmaili, T., Hawken, P.A.R., Martin, G.B., Viñoles, C., Fabre-Nys, C.

“…In seasonally anoestrous ewes of many breeds, the introduction of rams triggers an increase in gonadotrophin secretion that induces ovulation, a phenomenon…”
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