Year: 2018 | Month: June | Volume 8 | Issue 3
Association of Different Genetic Variants of Alpha S2-Casein Gene (CSN1S2) with Milk Production Traits in Cattle
Abstract:
The present experiment has been planned to study the association of different genetic variants of αS2-Casein gene (CSN1S2) with lactation length (days), fat (%) and protein (%) in Malvi, Nimari, Sahiwal and HF crossbred cattle. The analysis of variance for different genotypes of αS2-casein gene in four breeds of cattle was found significant (P<0.01) for lactation length (LL) trait. Significantly higher LL was recorded in AA genotype of HF crossbred, while, the lowest LL was noticed in AB genotype of Nimari. The mean LL between AA and AB genotype of Malvi, Sahiwal and HF crossbred cattle showed non-significant difference. The higher mean fat (%) was noticed for AA genotype than AB genotype of Malvi and Nimari, however, in HF crossbred higher fat (%) was observed for AB genotype. The mean fat (%) between AA and AB genotypes showed non-significant difference in Malvi, Sahiwal and HF crossbred cattle but the mean protein per cent was significantly higher in Malvi and Nimari and non-significantly higher in HF crossbred for AB genotype as compared to AA genotype. Among the different genotypes of all four breeds of cattle, significantly higher protein per cent was recorded in Nimari for AB genotyped animals.
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