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OJVRTM

Online Journal of Veterinary Research©

 (Including Medical and Laboratory Research)

Established 1994
ISSN 1328-925X

 

25 (10):740-748, 2021.

Transferrin polymorphisms and lambing traits in Garole sheep.

 

DK Yadav, S Taraphder,  KC Dhara and I Samanta.

 

Department of Animal Genetics and Breeding, Faculty of Veterinary and Animal Sciences, West Bengal university of Animal and Fishery Sciences,, Kolkata, West Bengal, India.

 

Yadav DK, Taraphder S,  Dhara KC, Samanta I., Transferrin polymorphisms and lambing traits in Garole sheep, Onl J Vet Res., 25 (10):740-748, 2021. We describe association of transferrin polymorphism with lambing traits in 52 Garole sheep finding 9 transferrin genotypes by vertical SDS-Polyacrylamide gel electrophoresis. Transferrin genotypes TfAA, TfBB, TfCC and TfDD were homozygous and TfAD, TfBC, TfBD, TfCD and TfDE, heterozygous. Average transferrin ewe genotypes yielded 2.05 ± 0.23 lambs with highest TfAD 2.71 ± 0.28 and lowest TfDE 1.57 ± 0.28 lambs. Average heterozygous lambing in ewes was 2.16 ± 0.18 and homozygous 1.99 ± 0.25.  Mean age at 1st lambing was 480 ± 4 days with TfAA genotype 522 ± 23 and TfAD 447 ± 13 days. Heterozygous ewes 1st lambed by 471 ± 5 days whereas homozygous ones at 493 ± 6 days. Overall lambing intervals were 256 ± 10 days with TfBB genotype 238 ± 7 and TfCC 266 ± 10 days.  Transferrin polymorphisms affected 2nd partus birth rates (P < 0.01), overall lambing (P < 0.05) and genotype (P < 0.05).  Transferrin genotypes influenced (P < 0.01) age at 1st lambing and intervals (P < 0.05) in first lambing interval. We find that heterozygous ewes had higher productivity than homozygous ones so that transferrin gene may be a marker for selection.

 

Key Words: Sheep, Garole ,Transferrin, Polymorphism, Lamb, Prolificacy,  Age at first Lambing and Lambing interval.

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