FATORES DE CORREÇÃO PARA PERÍMETRO ESCROTAL PARA EFEITOS DE IDADE E PESO AO SOBREANO EM BOVINOS NELORE.

L. T. DIAS; R. A. TEIXEIRA; L. EL FARO; L. G. ALBUQUERQUE

doi:10.15361/2175-0106.2005v21n1p96-100

ADJUSTMENT FACTORS OF SCROTAL CIRCUMFERENCE FOR YEARLING AGE AND WEIGHT EFFECTS IN NELORE CATTLE.

Authors

L. T. DIAS
R. A. TEIXEIRA
L. EL FARO
L. G. ALBUQUERQUE

DOI:

https://doi.org/10.15361/2175-0106.2005v21n1p96-100

Abstract

Data of scrotal circumference (PE) of 9,355 Nelore bulls from 382 contemporary groups (GC) were analyzed to estimate the adjustment factors to be used in genetic selection programs. Contemporary group was defined by year and season at birth, farm and management group at birth, weaning and yearling. The means and standard deviations of scrotal circumference (PE), yearling age (IDS) and yearling weight adjusted to 550 days (PSAJ) were respectively: 26.33 ± 3.18 cm, 545.09 ± 41.19 days, and 319.71 ± 35.76 kg. KEY-WORDS: Adjustment factor. Beef cattle. Precocity. Scrotal circunference. Sexual precocity.

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Published

17/06/2008

Issue

Vol. 21 No. 1 (2005)

Section

Animal Reproduction/Reprodução Animal

License

Authors must be aware that in case the manuscript is accepted for publication, the copyright is transferred to FUNEP. Total or partial reproduction is allowed provided that the reference is indicated explicitly.