18-Title: Bovine pituitary specific transcription factor 1(PIT-1) gene polymorphism in indigenous cattle of North East India vis-a-vis crossbred cattle
Authors: Keyolenu Yore, P Mayengbam, NS Singh and TC Tolenkhomba
Source: Ruminant Science (2020)-9(1):87-90.
How to cite this manuscript: Yore Keyolenu, Mayengbam P, Singh NS and Tolenkhomba TC (2020). Bovine pituitary specific transcription factor 1(PIT-1) gene polymorphism in indigenous cattle of North East India vis-a-vis crossbred cattle. Ruminant Science 9(1):87-90.
The study was conducted to explore the polymorphism in bovine Pituitary Specific Transcription Factor 1 (PIT-1) gene in 210 indigenous cattle of North East India viz. Meitei san (Manipur), Zobawng (Mizoram), Tho Tho (Nagaland), Lakhimi (Assam), Tripuri (Tripura), Meghalaya and Crossbred cattle. Two different variants of PIT-1 gene viz. A and B were detected using PCR-RFLP. The B allele was predominantly (0.776) prevalent among local cattle of North East India and slightly lower (0.650) in crossbred cattle. Among the genotypes, BB genotype was found in high frequency among the local cattle of North East India. While the genotype BB was comparatively low in the crossbred population. The AA genotype was almost absent in the indigenous cattle population. The population conforming to equilibrium indicated lack of selection pressure in these cattle population.
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