R. Bras. Zootec.01/Dec/2003;32(6 Sup..2):1878-82.

Heritability estimates for scrotal circumference in Nelore cattle

Laila Talarico Dias, Lenira El Faro, Lúcia Galvão de Albuquerque

DOI: 10.1590/S1516-35982003000800011

Genetic parameters and environmental effects were estimated for 9,355 Nelore cattle scrotal circumference measurements (PE). The univariate analysis considered animal effect (random effect) and fixed effects of contemporary group (GC) and linear and quadratic effects of age at yearling (IDS) and yearling weight adjusted to 550 days (PSAJ). Contemporary group was defined by: year, season at birth and management group at birth, weaning and yearling. Heritability estimates were: 0.42 ± 0.04 (after IDS and PSAJ); 0.41 ± 0.04 (after PSAJ) and 0.35 ± 0.03 (adjusting only for IDS).

Heritability estimates for scrotal circumference in Nelore cattle

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