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An evaluation of environmental parameters and the response to selection for weaning weight in Hereford range cattle

C. T. Gaskins

Abstract

I. Estiiaates of Heritability of Weaning Weight ....... 5 II.Estimates of Repeatability of Weaning Weight 6 III.Analysis of Variance for Weaning Weight.Analysis I. . .14 IV.Maximum Likelihood Constants .forWeaning Weight.Analysis I. « • • 15 V. Unadjustec Average Weaning Weight and Rainfall ..... 18 VI.Average Sire Constants by Years ..... 19 VII.Analysis of Variance for Weaning Weight.Analysis II . .20 VIII.Maximum Likelihood Constants for Weaning Weight.Analysis II.

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Key concepts: Selection (genetic algorithm), Weaning, Range (aeronautics), Biology, Animal science, Statistics, Mathematics, Engineering