Effect of diluters, breeds and storage period on boar semen characteristics

Abstract

The study was conducted on 54 semen samples obtained from 9 boars comprising 3 each of Large White Yorkshire, Tamworth and T & D (cross of Tamworth and Desi) by split sample technique to study the effect of different dilutors, genetic groups and hours of preservation on spermatozoa characteristics. The dilutors used were Kiev, Modena and lactose egg yolk (LEY). The sperm motility % was significantly highest in lactose egg yolk dilutor at all the hours of preservations. Irrespective of dilutors, the sperm motility% was significantly highest in T & D boars. Live sperm count was significantly highest in lactose egg yolk dilutor than Kiev and Modena during the hours of preservation in all the boar breeds. The difference in head abnormality % was nonsignificant in all the breeds and dilutors at all the hours of preservation except at 96 h. Highly significant effect of both hours of preservation and dilutors on the incidence of tail abnormality was noted during the study. The % of tail abnormality revealed an increasing trend with increase in the duration of preservation. On dilutor wise comparison, it indicated lower incidence of tail abnormality with lactose egg yolk dilutor at all hours of preservation. Therefore, it may be concluded that LEY diluter can be successfully used for preservation of boar spermatozoa at 15°C in a BOD incubator up to 96 h.