Novel SNPs in ATP1B2 Gene and their Association with Heat Tolerance Indicator Traits in Sahiwal Cattle

DOI: 10.18805/ijar.5725    | Article Id: B-3037 | Page : 223-226
Citation :- Novel SNPs in ATP1B2 Gene and their Association with Heat Tolerance Indicator Traits in Sahiwal Cattle .Indian Journal Of Animal Research.2017.(51):223-226

Nishant Verma, I.D. Gupta*, Archana Verma, Rakesh Kumar and Ramendra Das

Address :

ICAR-National Dairy Reserach Institute, Karnal-132 001, India.

Submitted Date : 9-06-2015
Accepted Date : 9-07-2015

Abstract

Heat Shock Proteins (HSPs) are expressed in response to heat stress and the polymorphism in HSP genes at single nucleotide level is reported to be associated with heat tolerance and production performance traits in cattle. ATP1B2 gene was mapped to Bos taurus autosome 19 (BTA 19) spanning nearly 4310bp, comprising 7 Exons and 6 Introns. The present study was conducted in Sahiwal cows (n=108) raised under sub-tropical climate with the objectives to identify SNPs in targeted regions (Intron 2, 4 and Exon 3, 5) of ATP1B2 gene and to analyze their association with heat tolerance traits in Sahiwal cows. Respiration rate (RR) and rectal temperature (RT) were recorded during probable extreme hours in winter, spring and summer seasons. Heat tolerance coefficient (HTC) was also calculated to check the adaptability of the animals during the period of heat stress. The comparative sequence analysis revealed a total of two SNPs in Intron 2 of ATP1B2 gene i.e. g.2243G>A and g.2366T>C. Out of these two identified SNPs, only one SNP i.e. g.2243G>A was found to be significantly (PC, RR, RT and HTC were having non-significant association with the different genotypes i.e. TT and TC. These findings suggest that AA and GA genotype of SNP g.2243G>A of ATP1B2 gene can be utilized as potential marker for propagating thermo-tolerant cattle.

Keywords

ATP1B2 HSPs HTC Sahiwal SNPs.

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