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|Title:||Estimates of variances due to sire x herd effects for weights of Hereford cattle||Contributor(s):||Meyer, Karin (author)||Publication Date:||2003||Handle Link:||https://hdl.handle.net/1959.11/4356||Abstract:||Estimating variances due sire x herd effects requires a large number of sires to be represented in multiple herds, otherwise too much variation between animals is 'picked up' as variance due to sire x herd effects, and heritability estimates are biased downwards. Such bias can be avoided by using only records for progeny of multiple-herd use sires to estimate the additive genetic variance. Estimates of variance components and genetic parameters from analyses of weights of Hereford cattle are presented for herds with high, medium and low proportions of sires used across multiple herds. Results from analyses estimating separate genetic variances for progeny of single and multiple herd sires, estimating a joint genetic variance for all animals, and ignoring sire x herd effects are compared.||Publication Type:||Conference Publication||Conference Details:||15th Conference of the Association for the Advancement of Animal Breeding and Genetics, Melbourne, Australia, 7-11 July, 2003||Source of Publication:||Proceedings of the 15th Conference of the Association for the Advancement of Animal Breeding and Genetics, p. 131-134||Publisher:||AAABG: Association for the Advancement of Animal Breeding and Genetics||Place of Publication:||Melbourne, VIC, Australia||ISSN:||1328-3227||Field of Research (FOR):||070201 Animal Breeding||Socio-Economic Objective (SEO):||830301 Beef Cattle||Peer Reviewed:||Yes||HERDC Category Description:||E1 Refereed Scholarly Conference Publication||Other Links:||http://trove.nla.gov.au/work/22223828?selectedversion=NBD24379203
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|Appears in Collections:||Animal Genetics and Breeding Unit (AGBU)|
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