Buscar
Mostrando ítems 11-20 de 322
The physiology and impact on fertility of the period of proestrus in lactating dairy cows
(Brazilian Coll Animal Reproduction, 2014-07-01)
In cattle, proestrus begins with the initiation of luteolysis and ends with initiation of estrus and the GnRH/LH surge. This period is marked by a dramatic decrease in circulating progesterone (P4) that reaches a nadir by ...
The physiology and impact on fertility of the period of proestrus in lactating dairy cows
(2014-01-01)
In cattle, proestrus begins with the initiation of luteolysis and ends with initiation of estrus and the GnRH/LH surge. This period is marked by a dramatic decrease in circulating progesterone (P4) that reaches a nadir by ...
Maintenance or regression of the corpus luteum during multiple decisive periods of bovine pregnancy
(Brazilian Coll Animal Reproduction, 2016-07-01)
In ruminants, there are specific times during the estrous cycle or pregnancy when the corpus luteum (CL) may undergo regression. This review has attempted to summarize the physiological and cellular mechanisms involved in ...
Progesterone levels and days to luteolysis in mares treated with intrauterine fractionated coconut oil
(2016-01-14)
Intrauterine plant oil infusion, including fractionated coconut oil, has been previously found to be a safe, inexpensive, and reversible method of prolonging the luteal phase in mares when administered on Day 10 of the ...
Direct effect of PGF2 alpha pulses on PRL pulses, based on inhibition of PRL or PGF2 alpha secretion in heifers
(ELSEVIER SCIENCE INCNEW YORK, 2012)
The relationships between PRL and PGF(2 alpha) and their effect on luteolysis were studied. Heifers were treated with a dopamine-receptor agonist (bromocriptine; Bc) and a Cox-1 and -2 inhibitor (flunixin meglumine [FM]) ...
Epidermal growth factor prevents prepartum luteolysis in the rat
(NATIONAL ACADEMY OF SCIENCES, 2005)
Effects of polyunsaturated fatty acids (PUFA) supplementation on progesterone production and time of luteolysis in non-pregnant Nelore cows
(Nottingham University Press, 2010-01-01)
Effects of polyunsaturated fatty acids (PUFA) supplementation on progesterone production and time of luteolysis in non-pregnant Nelore cows
(Nottingham University Press, 2010-01-01)
Alternative low doses and routes of administering a prostaglandin F2 alpha analogue to induce luteolysis in Nelore cows
(Korean Society Veterinary Science, 2006-12-01)
The present study was conducted in order to verify the efficacy of lower doses and alternative routes of a prostaglandin F2 alpha analogue, luprostiol (PGF), for the induction of luteolysis and the precipitation of estrus ...