Genetic and phenotypic (co)variances for production traits of female populations of purebred and composite beef cattle.

Abstract excerpt

Least squares means, genetic and phenotypic standard deviations, and phenotypic coefficients of variation were estimated for growth, size, condition score, age at puberty, gestation length, and calving difficulty as traits of individual females from 12 breed groups combined, for nine purebreds combined, and for the F1, F2, and F3 generations of three composite populations to which the nine purebreds contributed....

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