Effect of eCG on conception rate in 15 months old beef heifers, submitted to FTAI program using a Progesterone device

RODRIGUEZ, J.; CALLEJAS, S.; VATER, A.; CABODEVILA, J.; VATER, A. (H)

Isla de Comandatura

Congreso; 33rd Annual Meeting of the Brazilian Embryo Technology Society (SBTE).; 2019

Colégio Brasileiro de Reprodução Animal - CBRA

The use of eCG is widely employed in Bos indicus breeds, however the use in Bos taurus is still controverse. The objective of this study was to evaluate if the use of eCG can influence conception rate of heifers submitted to FTAI. A total of 318 Hereford (Boss Taurus) heifers with 13 to 15 month old, were used from a commercial farms located in the state of Benito Juarez, Buenos Aires Province, Argentine. All heifers were evaluated in BSC (1-9), average (± S.D) 5.3±0.6; as well as ovarian structure (OS) by ultrasonography (Wed-3000 V), 1= corpus luteum; 2= Follicle ≥10 mm diam; 3= follicle 0.05). It is concluded that the use of 250 IU of eCG does not increase conception rate in Boss Taurus 13-15 months old heifers. More research will be necessary to conclude if the difference in the conception rate could be increased.