Search Results - "Y. COGNIE"

State of the art in sheep-goat embryo transfer by Cognie, Y

“…Considerable advances have been made in the last 25 yr in sheep and goat embryo production and transfer technology. This presentation covers the procedures…”
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First birth of an animal from an extinct subspecies ( Capra pyrenaica pyrenaica) by cloning by Folch, J., Cocero, M.J., Chesné, P., Alabart, J.L., Domínguez, V., Cognié, Y., Roche, A., Fernández-Árias, A., Martí, J.I., Sánchez, P., Echegoyen, E., Beckers, J.F., Bonastre, A. Sánchez, Vignon, X.

“…Two experiments have been performed to clone the bucardo, an extinct wild goat. The karyoplasts were thawed fibroblasts derived from skin biopsies, obtained…”
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Effect of growth factors, EGF and IGF-I, and estradiol on in vitro maturation of sheep oocytes by Guler, A., Poulin, N., Mermillod, P., Terqui, M., Cognié, Y.

“…The objective of these experiments was to determine the effect of exogenous addition of insulin-like growth factor-I (IGF-I, 100 ng/mL), epidermal growth…”
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Effect of coculture with oviduct epithelial cells on viability after transfer of vitrified in vitro produced goat embryos by Rodríguez-Dorta, N., Cognié, Y., González, F., Poulin, N., Guignot, F., Touzé, J.-L., Baril, G., Cabrera, F., Álamo, D., Batista, M., Gracia, A., Mermillod, P.

“…This study evaluates the effect of coculture with goat oviduct epithelial cells (GOEC) on the pregnancy rate, embryo survival rate and offspring development…”
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Maedi-Visna virus was detected in association with virally exposed IVF-produced early ewes embryos by Romero, C. Cortez, Pellerin, J.L., Poulin, N., Cognié, Y., Chebloune, Y., Pépin, M., Fieni, F.

“…The objective of this study was to determine whether MVV can be transmitted by ovine embryos produced in vitro and whether the zona pellucida (ZP) provides any…”
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Improved vitrification method allowing direct transfer of goat embryos by Guignot, F., Bouttier, A., Baril, G., Salvetti, P., Pignon, P., Beckers, J.F., Touzé, J.L., Cognié, J., Traldi, A.S., Cognié, Y., Mermillod, P.

“…The aim of this study was to design a vitrification method suited to field embryo transfer experiments in goat. In a first experiment, a standard vitrification…”
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Laparoscopic ovum pick-up and in vitro production of sika deer embryos: Effect of season and culture conditions by Locatelli, Y., Vallet, J.C., Huyghe, F.P., Cognié, Y., Legendre, X., Mermillod, P.

“…Amongst the 200 deer subspecies worldwide, more than 40 are considered as endangered. In vitro embryo production may represent an efficient way to produce and…”
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Measurement of Ovine Pregnancy-Associated Glycoprotein (PAG) During Early Pregnancy in Lacaune Sheep by El Amiri, B, Karen, A, Sulon, J, Melo de Sousa, N, Alvarez-Oxiley, AV, Cognié, Y, Szenci, O, Beckers, JF

“…This study describes ovine pregnancy-associated glycoprotein (ovPAG) concentrations in 20 Lacaune sheep during early pregnancy. Measurements were performed by…”
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Current status of embryo technologies in sheep and goat by Cognié, Y., Baril, G., Poulin, N., Mermillod, P.

“…This review presents an overview of the technical bases of in vivo and in vitro embryo production in sheep and goat. The current limitations of in vivo…”
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Reduction of the developmental competence of sheep oocytes by inhibition of LH pulses during the follicular phase with a GnRH antagonist by Oussaid, B, Mariana, J C, Poulin, N, Fontaine, J, Lonergan, P, Beckers, J F, Cognie, Y

“…A GnRH antagonist (Antarelix) treatment was used during the breeding season of Romanov ewes, to investigate whether LH pulses are required the day before the…”
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Heterologous In Vitro Fertility Evaluation of Cryopreserved Iberian Red Deer Epididymal Spermatozoa with Zona-intact Sheep Oocytes and its Relationship with the Characteristics of Thawed Spermatozoa by Soler, AJ, Poulin, N, Fernández-Santos, MR, Cognie, Y, Esteso, MC, Garde, JJ, Mermillod, P

“…A heterologous in vitro system, using zona-intact sheep oocytes, was used to evaluate the relationship between sperm factors of Iberian red deer thawed…”
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Effect of GnRH antagonist-induced prolonged follicular phase on follicular atresia and oocyte developmental competence in vitro in superovulated heifers by OUSSAID, B, LONERGAN, P, KHATIR, H, GULER, A, MONNIAUX, D, TOUZE, J. L, BECKERS, J. F, COGNIE, Y, MERMILLOD, P

“…A GnRH antagonist (Antarelix) was used to suppress endogenous pulsatile secretion of LH and delay the preovulatory LH surge in superovulated heifers to study…”
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Effects of the Booroola Fec gene on ovarian follicular populations in superovulated Romanov ewes pretreated with a GnRH antagonist by DUFOUR, J. J, COGNIE, Y, MERMILLOD, P, MARIANA, J.-C, ROMAIN, R. F

“…Endocrine control of follicular growth was studied in mature Romanov ewes carrying (RF+) or not carrying (R+2) the Booroola Fec gene during an oestrous cycle…”
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Orthotopic and heterotopic autografts of frozen–thawed ovarian cortex in sheep by Aubard, Y., Piver, P., Cognié, Y., Fermeaux, V., Poulin, N., Driancourt, M.A.

“…Freezing ovarian cortex is a new option to preserve the fertility of young patients undergoing cancer treatment or in women facing premature menopause…”
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Mutation in Bone Morphogenetic Protein Receptor-IB is Associated with Increased Ovulation Rate in Booroola Mérino Ewes by Mulsant, Philippe, Lecerf, Frédéric, Fabre, Stéphane, Schibler, Laurent, Monget, Philippe, Lanneluc, Isabelle, Pisselet, Claudine, Riquet, Juliette, Monniaux, Danielle, Callebaut, Isabelle, Cribiu, Edmond, Thimonier, Jacques, Teyssier, Jacques, Bodin, Loys, Cognié, Yves, Chitour, Nour, Elsen, Jean-Michel

“…Ewes from the Booroola strain of Australian Mérino sheep are characterized by high ovulation rate and litter size. This phenotype is due to the action of the…”
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Effect of GnRH antagonist-induced prolonged follicular phase on follicular atresia and oocyte developmental competence in vitro in superovulated heifers by Oussaid, B, Lonergan, P, Khatir, H, Guler, A, Monniaux, D, Touze, JL, Beckers, JF, Cognie, Y, Mermillod, P

“…A GnRH antagonist (Antarelix) was used to suppress endogenous pulsatile secretion of LH and delay the preovulatory LH surge in superovulated heifers to study…”
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Resumption of gonadotrophin release during the post-partum period in suckling and non-suckling ewes by Schirar, A, Cognié, Y, Louault, F, Poulin, N, Meusnier, C, Levasseur, M C, Martinet, J

“…The post-partum secretion of LH, FSH and prolactin was monitored in 15 suckling and 6 non-suckling Préalpes du Sud ewes lambing during the breeding season by…”
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Effect of follicle size and of the FecB Booroola gene on oocyte function in sheep by Cognie, Y, Benoit, F, Poulin, N, Khatir, H, Driancourt, M A

“…Booroola ewes have a major gene that affects ovulation rate. Gene expression has consequences on ovarian somatic cells but it is unknown whether it also…”
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Successful in vitro production of embryos in the red deer ( [formula omitted][formula omitted]) and the sika deer ( [formula omitted][formula omitted]) by Comizzoli, P., Mermillod, P., Cognié, Y., Chai, N., Legendre, X., Mauget, R.

“…The aim of our study was to define the conditions for IVM and IVF of oocytes in 2 common deer species as models for endangered related subspecies. Immature…”
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Experimental infection of Black Belly and INRA 401 straight and crossbred sheep with trichostrongyle nematode parasites by Gruner, L., Aumont, G., Getachew, T., Brunel, J.C., Pery, C., Cognié, Y., Guérin, Y.

“…Compared to INRA 401 lambs reared in France, Black Belly (BB) lambs reared in Guadeloupe (F.W.I.) were highly resistant to both primary and secondary…”
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