Open AccessInduction and synchronization of estrus in dairy cows using a single injection of PGF2α and GnRH
Author(s) -
Emir Mujić,
Stoja Jotanović,
Drago Nedić́,
Milorad Tešić,
Refik Šahinović,
Marinko Vekić,
Husein Vilić
Publication year - 2012
Publication title -
acta veterinaria
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.308
H-Index - 17
eISSN - 1820-7448
pISSN - 0567-8315
DOI - 10.2298/avb1206591m
Subject(s) - estrous cycle , estrus synchronization , zoology , post partum , prostaglandin f , significant difference , fertility , prostaglandin , medicine , endocrinology , andrology , biology , hormone , pregnancy , population , ovulation , genetics , environmental health
The aim of this study was to examine the effects of treatment with a single injection of GnRH and PGF2α on estrous response, fertility and service period. A total of 120 lactating Simmental cows were divided into four groups of 30 cows each: group PGF2α 40 was treated on the 40th day post partum with a single injection of 2 mL prostaglandin analogue (Estrumate), group PGF2α 50 was treated in the same way on the 50th day, group GnRH was treated on the 40th day post partum with a single injection of 2 mL GnRH analogue (Receptal), and the fourth group (control) was not hormonally treated. Fertility of cows was not significantly different (p>0.05). The difference in the estrous response and service-period between the control group and experimental groups was statistically significant (p<0.01)