Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/3067
Title: Genetic Parameters and Annual Trends for Birth and Weaning Weights of a Northeastern Thai Indigenous Cattle Line
Contributor(s): Intaratham, W (author); Koonawootrittriron, S (author); Sopannarath, P (author); Graser, Hans Ulrich  (author); Tumwasorn, S (author)
Publication Date: 2008
Handle Link: https://hdl.handle.net/1959.11/3067
Abstract: Records of a Northeastern Thai indigenous cattle line population were used to estimate genetic parameters and annual trends for calf weights. The data set comprised records of 1,922 and 1,489 animals for birth and weaning weight, respectively born from 1993 to 2004. A bivariate analysis was carried out for variance and covariance components estimations using average information restricted maximum likelihood procedure. Average estimated breeding value and maternal breeding value of the animals born in 1993 were set to zero as a base group. Genetic trends of each trait were calculated by regressing average estimated breeding values and maternal breeding values on birth year of calves. Phenotypic variance for birth and weaning weight was 0.40, 0.14 and 0.04; 0.27, 0.05 and 0.23, respectively. Direct heritability was moderately heritable and genetic improvement through selection can be achieved. The estimate of phenotypic, direct genetic, maternal genetic and maternal permanent environmental correlation between birth and weaning weight was 0.48, 0.65, 0.98 and 0.73, respectively. The phenotypic trend, genetic trends of estimated breeding value and maternal breeding value for birth weight was 0.18, 0.04 and 0.01 kg/year, respectively. The phenotypic trend, genetic trends of estimated breeding value and maternal breeding value for weaning weight was -1.36, 0.32 and 0.03 kg/year, respectively. As maternal genetic effect was considerably less important than direct genetic effect, selection for improved weaning weight of this Northeastern Thai indigenous cattle line can place more emphasis on the direct genetic effect.
Publication Type: Journal Article
Source of Publication: Asian-Australasian Journal of Animal Sciences, 21(4), p. 478-483
Publisher: Asian-Australasian Association of Animal Production Societies
Place of Publication: Republic of Korea
ISSN: 1976-5517
1011-2367
Fields of Research (FoR) 2008: 070201 Animal Breeding
Socio-Economic Objective (SEO) 2008: 830301 Beef Cattle
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Publisher/associated links: http://pirun.ku.ac.th/~agrskk/images/2008-AJAS-478-483-Intaratham-GeneticParam.pdf
Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
Journal Article

Files in This Item:
2 files
File Description SizeFormat 
Show full item record

Page view(s)

946
checked on Mar 8, 2023
Google Media

Google ScholarTM

Check


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.