Haemoglobin polymorphism and its effect on different economic traits of Garole sheep

摘要

The aim of this study was to determine the influence of polymorph systems of hemoglobin types on prolificacy, age at first lambing and lambing interval in Garole sheep. The haemoglobin type was controlled by 2 alleles (Hb A and Hb B) in Garole sheep. Analysis of variance showed that haemoglobin polymorphism had nonsignificant effect on number of lamb in lambing. The age at first lambing for Hb AA and HB AB were almost similar. The influences of haemoglobin types on lambing interval was significant. The highest lambing interval was obtained from Hb AA types whereas the lowest lambing interval was obtained from Hb AB types. In conclusion, there were polymorphism in haemoglobin types in Garole sheep. According to the haemoglobin system, population was in genetic equilibrium. However, the presence of differences between the frequencies of the 2 alleles by categories could be a source of genetic diversity.