Artificial Insemination Program in Cattle

Morotti, Fábio; Lorenzetti, Elis; Seneda, Marcelo Marcondes

doi:10.1007/978-3-030-76529-3_1

Cited by 2 publications

(1 citation statement)

References 177 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The conception rate, which was particularly low in the control group, may be due to the 10 mm criterion we have chosen. GnRH administration shortens the estrus-LH peak and estrus-ovulation intervals and induces ovulation within 8-12 h post-insemination (Elmore, 1989;Jainudeen and Hafez, 2000;Morotti et al, 2021). In this study, there may be animals whose follicle diameters have not yet reached the preovulatory size during AI.…”

Section: Conception Ratesmentioning

confidence: 95%

The Effects of GnRH and hCG Administration on Pregnancy Rate in Postpartum Dairy Cows

2022

View full text Add to dashboard Cite

This study was designed to determine the effects of GnRH administration alone at the time of artificial insemination (AI) or in combination with hCG 5 days after GnRH injection on conception rates in postpartum dairy cows. Cows in estrus, without any reproductive health problem, between days 70-120 postpartum were randomly assigned to 3 equal groups. Buserelin acetate (10 µg), was administered at the time of AI to Group I (n=40). Group II (n=40) was administered first with Buserelin acetate (10 μg) at the time of AI and then with 1500 IU of hCG on the 5th day after insemination. Group III was maintained for control purposes and did not receive any treatment. Pregnancy diagnosis was performed on day 30 post-AI by transrectal ultrasonography. Conception rates were 80% (32/40), 80% (32/40), and 57.5% (23/40) in Group I, II and III (P

show abstract

Section: Conception Ratesmentioning

confidence: 95%