Effects of Breed of Sire and Double Insemination on Performance of Reproduction of Local Sheep

Abstract

The objectives of the study were to know the efiects of breed of sire and double
insemination on non return rate (NR), conception rate (CR), lambing rate (LR) and newbom weight (NW) in local sheep. Data obtained from 24 ewes that devided into 4 groups (G1, G2, G3 and G4) in which group was 6 ewes. G1 a.nd G2 were
inseminated by single and double semen (diluted) of local ram, respectively. G3 and G4 were inseminated by single and double semen (diluted) of Merino ram,
respectively. Results of the study showed that NR in G1, G2, G3 and G4 were 50% and 50%, 50% and 33.3%, 66.7% and 33.3%, and 16.7% and 16.7%, respectively. Newbom weight of local sheeps were lighter (P<0.05) than newbom weight of crossing between local ewes and Merino ram. A conclusion can be made from this study, that double inseminated with range 24 hours did not effectively on perfomance of reproduction. Merino ram can be improve newbom weight of local sheep.