摘要
Genetic and residual parameters were computed for conformation and performance traits of Limousin bulls in Ontario central test stations. Following editing, data were available on 456 bulls tested in 1990. Genetic parameters for performance traits were similar to those reported in the literature. Heritability of bone score (1 — light to 9 — heavy) was 0.22 ± 0.23. Heritability of a composite muscular development score was 0.51 ± 0.14. Muscular development was positively correlated genetically with all traits studied, including average daily gain (140 d), height, scrotal circumference and bone, and very highly correlated genetically with backfat thickness and weight at end of test. Selection for muscular development using a linear scoring system is feasible, but consideration should be given to correlated responses in other economically important traits. Key words: Multiple-trait analysis, growth and type traits correlations, station-tested beef bulls
摘要译文
计算安大略中心试验站利穆赞公牛的构象和性能特征的遗传和残留参数。编辑后，可获得1990年测试的456头公牛的数据。性能特征的遗传参数与文献报道的相似。骨骼评分的遗传性（1 - 轻至9 - 重）为0.22±0.23。复合肌肉发育评分的遗传力为0.51±0.14。肌肉发育与所研究的所有性状在遗传上呈正相关，包括平均日增重（140天），身高，阴囊周长和骨骼，以及在测试结束时与背thickness厚度和体重的高度相关性。使用线性评分系统选择肌肉发育是可行的，但应考虑其他经济重要性状的相关反应。关键词：多性状分析，生长和类型性状相关性，经过台站试验的牛肉公牛
Filippo Miglior; ; E. B. Burnside; and ; R. A. Kemp. Genetic parameter estimates of conformation and performance traits in station-tested Limousin bulls[J]. Canadian Journal of Animal Science, 1994,74(2): 379-381