Open AccessSynchronization of jealouses in simowal cows using Gnrh and PGF2α in the Conception, Michoacán
Author(s) -
Rodolfo Lucio,
Leticia Sesento,
José Luis Carlos Bedolla,
Ángel Raúl Cruz
Publication year - 2019
Publication title -
ecorfan ecuador journal
Language(s) - English
Resource type - Journals
ISSN - 1390-9959
DOI - 10.35429/eje.2019.11.6.34.37
Subject(s) - estrous cycle , breed , estrus synchronization , synchronization (alternating current) , follicular phase , ovulation , biology , seasonal breeder , zoology , medicine , andrology , endocrinology , hormone , mathematics , topology (electrical circuits) , combinatorics
The objective of this work is to reduce the time of presentation of jealousy and improve the indices of conception. The synchronization of estrus or estrus is a technique that is used to achieve the greatest number of pregnant females. GnRH stimulates the release of FSH and LH. FSH promotes follicular growth which increases the concentration of estrogens by the growth of the follicles. In this experiment, 6 cows of the Simmental breed were synchronized with a range of 0 to 7 births, natural riding was provided with a stallion of the same breed. The adoption of synchronization protocols has been increasing today due to the high market demand. A 66.6% favorable response to treatment was obtained. 33.3% presented estrus at 26 hours and the other 33.3% presented estrus at 30 hours after day 10. Understanding the reproductive physiology of the female and the male allows us to develop synchronization protocols, GnRH and PGF2α, are the methods what better results are producing in our races