Four crossbred cows with mummified fetus were utilized for the study. The cows were subjected to gynecological examination and based on the findings the cases were diagnosed as mummified fetus. The cows were treated with 2 mg estradiol valerate and 500 µg cloprostenol and were examined every 12 hr after 24 hr of the treatment for cervical dilatation and other signs related to fetal expulsion. T...

Con el objetivo de evaluar efecto la utilización gonadotrofina coriónica equina (eCG) en un protocolo inseminación artificial a tiempo fijo (IATF) base progesterona (P4) y condición corporal (CC), sobre fertilidad vacas mantenidas bajo sistema producción tradicional (SPT); se desarrolló una investigación, empleando diseño completo al azar, con arreglo factorial 2×2, siendo los factores CC (3,00...

Follicular diameter is used as a guiding tool to predict ovulation in the mare. However, the great range in preovulatory follicular diameter makes prediction of optimal breeding time based on follicular diameter unreliable. Uterine edema pattern is also useful to determine the best time to breed, since intensity of edema tends to dissipate as ovulation approaches, however, not every mare follow...

Introdução - As búfalas não exteriorizam os sinais clínicos do estro tão evidentemente como as fêmeas bovinas, muito embora ocorram significativos. Neste contexto, a IATF permite inseminação destas sem necessidade de observação cio, promovendo menor custo com mão obra e evitando possíveis falhas dos estro. Objetivo Comparar taxa prenhez obtida em raça Murrah Mediterrâneo utilizando o sêmen fres...

Resumo O objetivo do estudo foi verificar a eficiência e ovulação após administração de diferentes indutores para sincronização da em vacas corte. Cento oito não-lactantes foram distribuídas grupo controle (GC; não tratadas; n=28); benzoato estradiol (BE) (GBE; 17 beta-estradiol (17ßE) (G17ßE; n=28) deslorelina (DES) (GDES; n=24). No dia menos 11 (D-11) protocolo, o GC recebeu cloprostenol exam...

The objective of this study was to investigate the effect of hCG administration 5 days after breeding on plasma progesterone (P4) concentration and reproductive performance of oestrous-induced nulliparous dairy goats. A total of 59 nulliparous goats (36 Alpine and 23 Saanen) received intravaginal sponges with 60 mg medroxyprogesterone acetate for 9 days plus 200 IU equine chorionic gonadotrophi...

Th e aim of this study was to establish the prevalence of repeat breeder syndrome (RBS) in diff erent breeds and reproductive ages of cattle in central Croatia and to assess the eff ectiveness of hormone therapy as a treatment option. A total of 1088 dairy cows were observed, 218 heifers and 870 multiparous cows. Aft er the third unsuccessful artifi cial insemination (n = 164) and a thorough cl...