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Genetic variants of beta-lactoglobulin gene and its association with milk composition traits in riverine buffalo

Published online by Cambridge University Press:  21 September 2006

Vikas Vohra ,
Tarun Kumar Bhattacharya ,
Shanker Dayal ,
Pushpendra Kumar  and
Arjava Sharma
Vikas Vohra
Affiliation:
Animal Genetics Division, Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P.-243 122, India
Tarun Kumar Bhattacharya
Affiliation:
Animal Genetics Division, Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P.-243 122, India
Shanker Dayal
Affiliation:
Animal Genetics Division, Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P.-243 122, India
Pushpendra Kumar
Affiliation:
Animal Genetics Division, Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P.-243 122, India
Arjava Sharma
Affiliation:
Animal Genetics Division, Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P.-243 122, India
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Abstract

A study was carried out to determine genetic variants of β-lactoglobulin gene and to explore associations between these and milk composition traits in riverine buffalo. Single strand conformation polymorphism was employed to detect the genetic variants of the gene. Two fragments of this gene i.e. 119 bp of exon I and 400 bp spanning exon IV and intron IV were included in the study. For 119 bp fragment, three alleles namely, A, B and C were observed in all the buffalo breeds whereas four alleles (A, B, C and D) were detected for 400 bp fragment. The frequency distribution of alleles was different in different breeds of buffaloes for both the fragments. For exon I fragment, the milk composition traits such as total SNF, protein, solid, fat and whey protein yield were found to be significantly (P<0·05) associated with genotypes in Murrah and Bhadawari buffalo whereas in Mehsana breed genotypes were significantly (P<0·05) co-related with total SNF, solid and fat yield. Genotypes of 400 bp fragment, only total fat yield in Mehsana buffalo was found to be significantly (P<0·05) associated with genotypes.

Keywords

β-lactoglobulinbuffalomilk compositionpolymorphism
Type
Research Article
Information
Journal of Dairy Research , Volume 73 , Issue 4 , November 2006 , pp. 499 - 503
Copyright
Proprietors of Journal of Dairy Research 2006

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