Genetic and phenotypic relationships among endocrine and traditional fertility traits and production traits in Holstein-Friesian dairy cow From: Journal of Dairy Science | Date: April 1, 2002| Author: Flint, A P F; Woolliams, J A; Royal, M D | Copyright American Dairy Science Association Apr 2002. Provided by ProQuest LLC.Copyright information

ABSTRACT

The objective of this study was to estimate the heritability of a number of traditional and endocrine fertility traits in addition to d-56 predicted milk yield (MY56), and the genetic and phenotypic correlations between these traits. Various fixed effects such as season, year, herd, lactation number, diet, percentage Holstein (PCH) of the cow, and occurrence of uterine infection (UI), dystocia (DYS), and retained placenta (RP) were also investigated. Data collected for 1212 l...

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