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Y-chromosome genetic diversity in and around its domestication origin and a better understanding of indicine-specific microsatellite alleles are imperative concerns but less -targeted. We analysed Y-chromosome markers in 301 bulls representing 19 native Indian cattle ( Bos indicus ) and identified new alleles and haplotypes. Compared to other indicine studies, the high Y-haplotype diversity found in Indian cattle supports the hypothesis of greater genetic variability across the centre of origin decreasing along migratory routes with increasing distance. Hence, a considerable paternal genetic diversity of Indian cattle appears to have been lost in transboundary commercial indicine breeds. The Khillar and Gir are the most diversified populations where the first tends to be the well-differentiated traditional breed carrying strikingly distinct Y-lineages with typical BM861-158 bp allele, characteristics of taurine cattle, while retaining standard indicine lineages for all other markers. Geographical distribution found to be an unreliable predictor of parental variation, and Y-lineages seemed closely related to Indian breed function/utility. The comprehensive Y-chromosome information will be useful to examine the demographic expansion/spread of  Bos indicus  lineages from close proximity to the domestication centre across different countries worldwide and such diversity should be preserved through effective management and conservation programs.

Y-chromosome genetic diversity of Bos indicus cattle in close proximity to the centre of domestication