title: Relationship of dystocia transmitting ability with type and production transmitting ability in Holstein bulls.
abstract: Relationships of transmitting ability for dystocia with transmitting abilities for type and production in Holstein bulls were estimated. Genetic correlations between dystocia transmitting ability with Predicted Difference (PD) were: milk .00, fat .00, test -.02, and dollars .00. Genetic correlations for transmitting ability of dystocia were -.28 with Predicted Difference Type and -.23 with Type Production Index. Correlation indicated improved conformation will increase dystocia. The relationship of transmitting abilities from Mating Appraisal for Profit with dystocia indicated that scale (size) has a major effect on the type-dystocia relationship. Large size results in both high type classification and increased dystocia. Correlations of rump and center support with dystocia were also in excess of .20.
mesh_terms: D000818:Animals; D002417:Cattle / Q000033:anatomy & histology / Q000235:genetics*; D004420:Dystocia / Q000235:genetics*; D005260:Female; D007774:Lactation; D008297:Male; D011247:Pregnancy; D012098:Reproduction