GENOME WIDE QTLS FOR AGE AT FIRST CALVING IN BUFFALOES

摘要

The present invention relates to Genome wide identification of QTL for age at first calving in buffalo (Bubalus bubalis) using Genome wide SNPs. A total of 6215 SNPs were discovered and genotyped in 12 sires and their daughters which constituted a reference family. The bulls were selected from the breed tract of Murrah buffaloes. The reference family was created for the purpose of identification of QTLs for age at first calving. The phenotypic records of age at first calving of 1762 buffalos were obtained and verified for normal distribution. The data was subjected to analysis using single marker analysis using QTL Cartographer, composite interval mapping using R/qtl and meta-QTL analysis using Biomercator. A total of 86 QTLs have been identified for age at first calving in buffaloes. The QTLs were present on 21 autosomes (except BBUl0, BBU22 and BBU24).