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Comparison of four methods of variance components estimation for heritability of economic traits in Murrah buffalo

Indian Agricultural Research Journals

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Title Comparison of four methods of variance components estimation for heritability of economic traits in Murrah buffalo
 
Creator RAHEJA, K L
VINAYAK, A K
KALRA, SUNIL
 
Subject Henderson method-3, Maximum likelihood, Minimum variance quadratic unbiased estimation, Restricted maximum likelihood, Sire and residual variances
 
Description First lactation records on 2 107 Murrah buffaloes, maintained at 4 military dairy farms (Ambala, Ferozpur, Lucknow and Meerut) and 3 UP State Government Farms (Babugarh, Mathura and Madurikund) during 1961-88 were used to compare 4 methods of varjance components estimation viz. Henderson method-3 (H M-3), maximum likelihood (ML), restricted maximum likelihood (REML) and minimum variance quadratic unbiased estimation (MIVQUE). Traits included In the study were age at first calving, first lactation milk yield, first lactation length and first calving interval. Sire and residual variance components were estimated from a model containing season, and year of calving and farm as fixed effects and sires within farm as random effect. Sire variance components obtained from HM-3 and MIVQUE for all traits except first lactation milk yield were significantly (P
 
Publisher Directorate of Knowledge Management in Agriculture
 
Contributor —
 
Date 2014-01-08
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
—
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/36430
 
Source The Indian Journal of Animal Sciences; Vol 71, No 2 (2001)
0367-8318
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/36430/16228
 
Rights Copyright (c) 2014 The Indian Journal of Animal Sciences