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Title: Genetic Variation and Estimating Breeding Values for Small-holder Crossbred Dairy Cattle in India
Contributor(s): Al kalaldeh, M  (author)orcid ; Gaundare, Y (author); Swaminathan, M (author); Joshi, S (author); Aliloo, H  (author); Strucken, E M  (author)orcid ; Ducrocq, V (author); Gibson, J P  (author)orcid 
Publication Date: 2019
Open Access: Yes
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Abstract: We report the results of the first large scale milk recording and genetic evaluation for crossbred cows in a smallholder dairy production system in India. Preliminary results represented 8,144 smallholder crossbred cows with a total of 140,214 daily milk records, of which 2,946 animals were genotyped with the GGP Bovine and Illumina SNP assays. Data were adjusted for fixed effects and analysed with a random regression (RR) model with the 1st degree Legendre polynomial and heterogeneous variance. Heritabilities of milk yield ranged from 0.14 to 0.22 throughout the lactation period, with an average value of 0.19. Genomic Estimated breeding values (GEBV) for the genotyped animals including the smallholder crossbred cows and the bulls and dams from the BAIF bull stud ranged from +1.9 to -1.4 kg/day. The moderate heritability of the milk yield found in our results together with the wide range of GEBV, indicate that a good response to genomic selection for milk yield can be expected for smallholder dairy farms in India.
Publication Type: Conference Publication
Conference Details: Association for the Advancement of Animal Breeding and Genetics (AAABG), Armidale, Australia, 27th October - 1st November, 2019
Source of Publication: Proceedings of the AAABG 23rd Conference, v.23, p. 440-443
Publisher: AAABG: Association for the Advancement of Animal Breeding and Genetics
Place of Publication: Armidale, Australia
Field of Research (FoR) 2008: 070201 Animal Breeding
Field of Research (FoR) 2020: 300305 Animal reproduction and breeding
Socio-Economic Objective (SEO) 2008: 830302 Dairy Cattle
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
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Appears in Collections:Conference Publication
School of Environmental and Rural Science

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