Short Communication: Genotype by Housing Interaction for Conformation and Workability Traits in Danish Holsteins
Open Access
- 1 November 2008
- journal article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 91 (11), 4424-4428
- https://doi.org/10.3168/jds.2008-1116
Abstract
A total of 30,190 first-parity Danish Holstein cows housed in free stalls or tie stalls were analyzed to quantify to what degree genotype by housing interaction existed for 21 conformation and 2 workability traits. Each trait measured in different housing systems was treated as 2 separate traits in a bivariate animal model. Genetic correlations between the 2 traits as well as differences in genetic and residual variance were used as measurements of whether or not genotype by housing interaction occurred. Genetic correlations were in general close to unity (>0.9), except for body width (0.87 +/- 0.06). Genetic variance was greater (22% on average) for all traits except 2, whereas residual variance was greater for feet and leg traits and lower for body and udder traits when measured in tie-stall environments for nearly all traits. In total, this led to a greater heritability for traits measured in tie-stall barns. Conformation and workability traits measured in free stalls and tie stalls should not be considered as different traits when predicting breeding values, but heterogeneous variance could be accounted for.Keywords
This publication has 11 references indexed in Scilit:
- Prediction of Genetic Correlations and International Breeding Values for Missing TraitsJournal of Dairy Science, 2007
- Applied Genetic Evaluations for Production and Functional Traits in Dairy CattleJournal of Dairy Science, 2004
- Genetic Parameters for Feet and Leg Traits Evaluated in Different EnvironmentsJournal of Dairy Science, 2003
- Genotype × Environment Interaction for Protein Yield in Dutch Dairy Cattle as Quantified by Different ModelsJournal of Dairy Science, 2002
- Genotype by Environment Interaction in Nordic Dairy Cattle Studied Using Reaction NormsActa Agriculturae Scandinavica, Section A — Animal Science, 2002
- Analysis of Survival in Dairy Cows with Supplementary Data on Type Scores and Housing Systems from a Region of Northwest GermanyJournal of Dairy Science, 2001
- Multiple-Country Comparison of Dairy SiresJournal of Dairy Science, 1994
- Adjustment for Heterogeneous Variance in Genetic Evaluations for Conformation of United States HolsteinsJournal of Dairy Science, 1994
- Method and Effect of Adjustment for Heterogeneous Variance of Holstein Conformation TraitsJournal of Dairy Science, 1994
- Relationship of Linear Type Traits and Herd Life Under Different Management SystemsJournal of Dairy Science, 1993