Uso do diluidor ACP102® com e sem gema de ovo no sêmen resfriado de ovinos / Use of ACP102® extender with and without egg yolk in sheep cooled semen

ABSTRACT

This study aims to evaluate the fertility rate of sheep semen diluted and cooled to 4ºC in powdercoconut water (ACP-102®) with and without egg yolk in artificial insemination by cervical route in sheep. Tworam lambs and 72 ewe lambs were used, divided into 3 groups ACP-102® without egg yolk and cooled to 4ºCfor 12 hours, ACP-102® with 2,5% egg yolk also cooled as the first group and a control group with fresh semendiluted in ACP-102® without egg yolk. Pregnancy diagnosis was performed 30 days later. Pregnancy rates weresignificantly different (P < 0.05) between ACP-SGF (58,3%) and ACP-SG4 (20,8%) groups. The ACP-CG4(37,5%) group did not differ in relation to the ACP-SGF. Therefore, the addition of egg yolk to ACP-102®extender favors the viability of sheep semen, cooled to 4ºC for 12 hours and fertility of artificially inseminatedsheep by cervical route.