Search Results - "Lonergan, P."

Interferon-tau and fertility in ruminants by Forde, N, Lonergan, P

“…Establishment of pregnancy in domestic ruminants includes pregnancy recognition signalling by the conceptus, implantation and placentation. Despite the high…”
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Review: Historical and futuristic developments in bovine semen technology by Lonergan, P.

“…Up to the 18th century, the prevailing view of reproduction, or ‘generation’ as it was referred to, was that organisms develop from miniatures of themselves,…”
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Symposium review: Progesterone effects on early embryo development in cattle by Lonergan, P, Sánchez, J M

“…The causes of low fertility in dairy cattle are complex and multifactorial and may be due to compromised follicle development affecting oocyte quality, a…”
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Maternal-embryo interaction leading up to the initiation of implantation of pregnancy in cattle by Lonergan, P., Forde, N.

“…Early embryo development following fertilization occurs in the oviduct. However, despite being the site of fertilization in cattle, it is possible to by-pass…”
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Review: Understanding the causes of variation in reproductive wastage among bulls by Fair, S., Lonergan, P.

“…The ability to predict the fertility of bulls before semen is released into the field has been a long-term objective of the animal breeding industry. However,…”
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Sex determines the expression level of one third of the actively expressed genes in bovine blastocysts by Bermejo-Alvarez, P, Rizos, D, Rath, D, Lonergan, P, Gutierrez-Adan, A

“…Although genetically identical for autosomal Chrs (Chr), male and female preimplantation embryos could display sex-specific transcriptional regulation. To…”
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Blastocyst-induced changes in the bovine endometrial transcriptome by Passaro, C, Tutt, D, Mathew, D J, Sanchez, J M, Browne, J A, Boe-Hansen, G B, Fair, T, Lonergan, P

“…The objectives of this study were (i) to determine whether blastocyst-induced responses in endometrial explants were detectable after 6- or 24-h co-culture in…”
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Associations between the postpartum uterine and vaginal microbiota and the subsequent development of purulent vaginal discharge vary with dairy cow breed and parity by Moore, S.G., Feehily, C., Doyle, R.C., Buckley, F., Lonergan, P., Cotter, P.D., Butler, S.T.

“…The objective of this study was to characterize the species composition and functional potential of the vaginal and uterine microbiota at 1 wk postpartum in…”
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Economics of timed artificial insemination with unsorted or sexed semen in a high-producing, pasture-based dairy production system by Walsh, D.P., Fahey, A.G., Lonergan, P., Wallace, M.

“…This study used a stochastic simulation model to estimate the potential economic benefit of using timed artificial insemination (TAI) in combination with…”
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Role of Progesterone in Oocyte Acquisition of Developmental Competence by Fair, T, Lonergan, P

“…It is generally accepted that progesterone (P4) is a key regulator of reproductive function in mammals. In cattle, the primary focus of P4’s actions has been…”
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Postpartum vaginal discharge score is associated with genetic traits, postpartum fertility phenotypes, metabolic status, and overall reproductive performance in seasonal-calving pasture-based dairy cows by Rojas Canadas, E, Herlihy, M M, Kenneally, J, Kearney, F, Lonergan, P, Butler, S T

“…The aims of this study were (1) to evaluate potential associations between genetic traits, postpartum phenotypes, cow factors, and postpartum vaginal discharge…”
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In vitro-produced bovine embryos—Dealing with the warts by Lonergan, P., Fair, T.

“…Bovine in vitro embryo production is an inefficient process; while maturation and fertilization proceed apparently normally, the proportion of embryos reaching…”
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Progesterone and conceptus elongation in cattle: a direct effect on the embryo or an indirect effect via the endometrium? by Clemente, M, de La Fuente, J, Fair, T, Al Naib, A, Gutierrez-Adan, A, Roche, J F, Rizos, D, Lonergan, P

“…The steroid hormone progesterone (P4) plays a key role in the reproductive events associated with pregnancy establishment and maintenance. High concentrations…”
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Changes in the Endometrial Transcriptome During the Bovine Estrous Cycle: Effect of Low Circulating Progesterone and Consequences for Conceptus Elongation by Forde, N, Beltman, M.E, Duffy, G.B, Duffy, P, Mehta, J.P, Ó'Gaora, P, Roche, J.F, Lonergan, P, Crowe, M.A

“…In cattle, elevated concentrations of circulating progesterone (P4) in the immediate postconception period are associated with advanced conceptus development,…”
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Fertility in seasonal-calving pasture-based lactating dairy cows following timed artificial insemination or timed embryo transfer with fresh or frozen in vitro–produced embryos by Crowe, A.D., Sánchez, J.M., Moore, S.G., McDonald, M., Rodrigues, R., Morales, M.F., Orsi de Freitas, L., Randi, F., Furlong, J., Browne, J.A., Rabaglino, M.B., Lonergan, P., Butler, S.T.

“…The objective was to compare pregnancy per service event (P/S) in lactating dairy cows following timed artificial insemination (AI) or timed embryo transfer…”
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An ex-vivo assessment of differential sperm transport in the female reproductive tract between high and low fertility bulls by Donnellan, E.M., Lonergan, P., Meade, K.G., Fair, S.

“…Despite passing all quality control checks at animal breeding centres, bulls with apparently normal semen quality can yield unacceptably low field fertility…”
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Progesterone-Regulated Changes in Endometrial Gene Expression Contribute to Advanced Conceptus Development in Cattle by N. Forde, F. Carter, T. Fair, M.A. Crowe, A.C.O. Evans, T.E. Spencer, F.W. Bazer, R. McBride, M.P. Boland, P. O'Gaora, P. Lonergan, J.F. Roche

“…The postovulatory rise in circulating progesterone (P4) concentrations is associated with increased pregnancy success in beef and dairy cattle. Our study…”
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Identification of sperm proteins as biomarkers of field fertility in Holstein-Friesian bulls used for artificial insemination by Rabaglino, M.B., Le Danvic, C., Schibler, L., Kupisiewicz, K., Perrier, J.P., O'Meara, C.M., Kenny, D.A., Fair, S., Lonergan, P.

“…Despite passing stringent quality control, bulls used in artificial insemination can vary significantly in their fertility, emphasizing the need for reliable…”
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Incidence and timing of pregnancy loss following timed artificial insemination or timed embryo transfer with a fresh or frozen in vitro-produced embryo by Crowe, A.D., Sánchez, J.M., Moore, S.G., McDonald, M., McCabe, M.S., Randi, F., Lonergan, P., Butler, S.T.

“…The aim of this study was to characterize the incidence and timing of pregnancy loss from service event (timed artificial insemination or timed embryo…”
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Transcriptional sexual dimorphism during preimplantation embryo development and its consequences for developmental competence and adult health and disease by Bermejo-Alvarez, P, Rizos, D, Lonergan, P, Gutierrez-Adan, A

“…In adult tissues, sexual dimorphism is largely attributed to sex hormone effects, although there is increasing evidence for a major role of sex chromosome…”
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