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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

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

Blood samples were taken from 48 heifers three times a day during a week before and 20 days after AI. Blood progesterone and LH remained constant for up to 16 days after insemination, whether the heifer was pregnant or not, but between 17 and 20 days the progesterone decreased in non-pregnant...

Author(s)
Roche, J. F.; Ireland, J. J.; Boland, M. P.; McGeady, T. M.
Citation
Veterinary Record, 1985, 116, 6, pp 153-155