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Abstract

Progesterone treatments are used to increase submission rates in postpartum dairy cows; however, in many cases the protocol is used as a blanket therapy for all cows without regard for physiological or disease state. The objective of this study was to identify the physiological or disease classes...

Author(s)
McNally, J. C.; Crowe, M. A.; Roche, J. F.; Beltman, M. E.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2014, 82, 9, pp 1263-1272
Abstract

The aims of the present study were to investigate (1) the risk factors that influence the achievement of reproductive targets postpartum (pp) and (2) the key factors that influence pregnancy rate following first artificial insemination (AI) in dairy cows. Ninety-eight Holstein-Friesian pp cows were ...

Author(s)
Aungier, S. P. M.; Roche, J. F.; Diskin, M. G.; Crowe, M. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 6, pp 3472-3487
Abstract

Pregnancy per insemination is a major determinant of reproductive efficiency in cattle and is affected by concentrations of progesterone (P4) during early pregnancy. The relationship between pregnancy per artificial insemination (P/AI) and early luteal concentrations of P4, and repeatability of...

Author(s)
Parr, M. H.; Mullen, M. P.; Crowe, M. A.; Roche, J. F.; Lonergan, P.; Evans, A. C. O.; Diskin, M. G.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 5, pp 2390-2396
Abstract

In the study presented, the hypothesis that ligands of the insulin-like growth factor (IGF) family, as well as their binding proteins (BPs), are temporally regulated and are altered by elevated progesterone (P4) and/or pregnancy was tested. Heifers detected in standing estrus following...

Author(s)
McCarthy, S. D.; Roche, J. F.; Forde, N.
Publisher
American Physiological Society, Bethesda, USA
Citation
Physiological Genomics, 2012, 44, 2, pp 130-140
Abstract

Progesterone-induced blocking factor (PIBF) and galectins modulate the maternal immune response during pregnancy. We hypothesized that the relative transcript abundance of the above genes would be different during the luteal phase/early pregnancy and would be affected by progesterone...

Author(s)
Okumu, L. A.; Fair, T.; Szekeres-Bartho, J.; O'Doherty, A. M.; Crowe, M. A.; Roche, J. F.; Lonergan, P.; Forde, N.
Publisher
American Physiological Society, Bethesda, USA
Citation
Physiological Genomics, 2011, 43, 14, pp 903-910
Abstract

Higher systemic progesterone in the immediate post-conception period is associated with an increase in embryonic growth rate, interferon-tau production and pregnancy rate in cattle. The objective of this study was to examine the effect of increasing progesterone concentration on Day 3 on subsequent ...

Author(s)
Carter, F.; Forde, N.; Duffy, P.; Wade, M.; Fair, T.; Crowe, M. A.; Evans, A. C. O.; Kenny, D. A.; Roche, J. F.; Lonergan, P.
Publisher
CSIRO Publishing, Collingwood, Australia
Citation
Reproduction, Fertility and Development, 2008, 20, 3, pp 368-375
Abstract

The effect of supplementary progesterone in conjunction with pig FSH on the induction of superovulation was studied in heifers synchronized with PGF at the mid-cycle stage or a progesterone-releasing intravaginal device (PRID) inserted at different phases of the cycle. The effects of site of ...

Author(s)
Goulding, D.; Williams, D. H.; Roche, J. F.; Boland, M. P.
Citation
Journal of Reproduction and Fertility, 1994, 100, 2, pp 505-510
Abstract

30 crossbred ewes were given for 12 days a vaginal sponge containing 30 mg FGA or 500 mg progesterone, or a progesterone controlled internal drug releaser (CIDR). Between days 10 and 12, they were injected with 45 mg crude horse anterior pituitary extract. Ewes were mated 2-3 times during oestrus....

Author(s)
Boland, M. P.; Crosby, T. F.; Gordon, I.; Roche, J. F.; McLeod, B.; Haresign, W.; Donnelly, J.
Publisher
University College Dublin, Dublin, Irish Republic
Citation
11th International Congress on Animal Reproduction and Artificial Insemination, University College Dublin, Ireland, June 26-30 1988. Volume 2. Brief communications., 1988, Paper No. 145, pp 3pp.
Abstract

200 ewes were given an intravaginal sponge containing progesterone for 12 days. After sponge withdrawal, they were immunized against androstenedione or were injected with 750 IU PMSG. They were given a controlled internal drug releaser with progesterone during days 5-10, 10-15 or 5-15 after mating...

Author(s)
Murray, B. F.; Boland, M. P.; Crosby, T. F.; Roche, J. F.
Publisher
University College Dublin, Dublin, Irish Republic
Citation
11th International Congress on Animal Reproduction and Artificial Insemination, University College Dublin, Ireland, June 26-30 1988. Volume 2. Brief communications., 1988, Paper No. 110, pp 3pp.
Abstract

In 463 cows from 5 herds, the interval from calving to the 1st increase in progesterone concentration of milk averaged 30.6±0.94 days, calving to 1st oestrus 55 days (residual standard deviation = 29 days), calving to 1st service 67±29 days, calving to conception 87±41 days, 1st-service CR 52%...

Author(s)
Fagan, J. G.; Roche, J. F.
Publisher
University College Dublin, Dublin, Irish Republic
Citation
11th International Congress on Animal Reproduction and Artificial Insemination, University College Dublin, Ireland, June 26-30 1988. Volume 2. Brief communications., 1988, Paper No. 28, pp 3pp.

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