Genetic, phenotypic, and environmental parameter estimates of calving difficulty, weight, and measures of pelvic size in beef heifers.

doi:10.2527/1991.69124793x

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Article

Genetic, phenotypic, and environmental parameter estimates of calving difficulty, weight, and measures of pelvic size in beef heifers.

Journal of animal science - 1 Dec 1991

Naazie A, Makarechian M, Berg R T

Abstract excerpt

The heritabilities for and the genetic, phenotypic, and environmental correlations among calving difficulty scores (CDS) and measures of size of the pelvic inlet were estimated using 547 records of 2-yr-old heifers from three synthetic breed groups. Calving difficulty score was treated first as a...

Topics

Analysis of Variance
Animals
Birth Weight
Body Weight
Breeding
Cattle
Cattle Diseases
Dystocia
Female
Genetic Variation
Pelvis
Phenotype
Pregnancy

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