Vol. 10, Special Issue 7 (2021)

Author(s):
T Karuthadurai, AK Chakravarty, Shrikant Dodamani and Pradeep Nag BS

Abstract:
The present study was undertaken to study the effect of SNP in exon 3 region of prolactin gene on milk production and its composition traits in Sahiwal cattle. The DNA was isolated from the blood samples of 98 pedigreed Sahiwal animals (including 27 male calf, 22 female calf and 49 Sahiwal adult female) PCR amplification was done, followed by PCR-RFLP. The phenotypic data was adjusted for non- genetic factors and regression analysis was performed. Multiple regression of SNP in exon 3 region of prolactin gene revealed that on an average, test day milk yield increased by 321.5g, test day fat yield by 13.9g and test day SNF yield increased by 19.4g. The SNP could be considered as potential genetic marker for early selection of animals based on test day milk production and its composition traits and could be incorporated in the Marker Assisted Selection strategy in future.