Genetic Variation and Estimating Breeding Values for Small-holder Crossbred Dairy Cattle in India

Title
Genetic Variation and Estimating Breeding Values for Small-holder Crossbred Dairy Cattle in India
Publication Date
2019
Author(s)
Al kalaldeh, M
( author )
OrcID: https://orcid.org/0000-0002-3206-6421
Email: malkala2@une.edu.au
UNE Id une-id:malkala2
Gaundare, Y
Swaminathan, M
Joshi, S
Aliloo, H
( author )
OrcID: https://orcid.org/0000-0002-5587-6929
Email: haliloo@une.edu.au
UNE Id une-id:haliloo
Strucken, E M
( author )
OrcID: https://orcid.org/0000-0002-2715-0733
Email: estrucke@une.edu.au
UNE Id une-id:estrucke
Ducrocq, V
Gibson, J P
( author )
OrcID: https://orcid.org/0000-0003-0371-2401
Email: jgibson5@une.edu.au
UNE Id une-id:jgibson5
Type of document
Conference Publication
Language
en
Entity Type
Publication
Publisher
Association for the Advancement of Animal Breeding and Genetics (AAABG)
Place of publication
Armidale, Australia
UNE publication id
une:1959.11/28682
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.
Link
Citation
Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.23, p. 440-443
ISSN
1328-3227
Start page
440
End page
443

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