Conception Rates after Cervical Insemination of Freshly Diluted Semen and Chilled Semen in Nellore Sheep (Jodipi)

Abstract

This study was undertaken to evaluate the conception rate in Nellore sheep (Jodipi) with fresh diluted semen and chilled semen at 24 and 48h (stored at 5°C). Semen was collected, diluted with Tris Citric acid Fructose Yolk diluent and stored at 5°C for 24 and 48h to undertake cervical artificial insemination in 63 ewes at natural estrus. Conception rates were 61.90, 47.62 and 42.86% with diluted semen and chilled semen stored for 24 and 48h, respectively based on 25 day non return rates. Therefore, it was concluded that Artificial Insemination with both freshly diluted semen and chilled semen stored up to 48 h can used with good conception rates.