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Growth hormone gene polymorphism and its association with lactation yield in dairy cattle*

Indian Agricultural Research Journals

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Title Growth hormone gene polymorphism and its association with lactation yield in dairy cattle*
 
Creator Pawar, R S
Tajane, K R
Joshi, C G
Rank, D N
Bramkshtri, B P
 
Subject Dairy cattle; Growth hormone gene; PCR-RFLP
 
Description Kankrej, Gir and Holstein were typed for 3 growth hormone loci to identify the expected RFLP (restriction fragment length polymorphisms) markers in exon fifth (GH1 locus), intron third (GH2 locus) and 3' region (GH3 locus) of the gene with AluI, MspI and HaeIII restriction enzymes, respectively. The Kankrej breed was monomorphic at GH1 locus. The alleles A, D and F at 3 GH loci were more frequent in Kankrej and Gir cows, while the frequencies of their alternative alleles were comparatively more in Holstein cows. B and C alleles of GH1 and GH2 loci, respectively, appeared to be significantly associated with higher lactation milk yield. The cows with AB and BB genotypes at GH1 and CD and DD genotypes at GH2 locus yielded more or less same first lactation milk indicating complete dominance of b and D alleles overA md C alleles, respectively. The genotypes at GH3 locus were independent of lactation yields. The phylogenic tree based on genetic distances indicated that Kankrej and Gir belonged to close cluster while Holstein belonged to different cluster.
 
Publisher Directorate of Knowledge Management in Agriculture
 
Date 2007-09-05
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/10261
 
Source The Indian Journal of Animal Sciences; Vol 77, No 9 (2007)
0367-8318
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/10261/4666
 
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