Article
Genetic variation of metabolite and hormone concentration in UK Holstein-Friesian calves and the genetic relationship with economically important traits.
Journal of dairy science - 1 Aug 2009
Hayhurst C, Flint A P F, Løvendahl P, Woolliams J A, Royal M D
Abstract excerpt
The decline of dairy cattle fertility worldwide remains a major concern, with conception rates to first service commonly below 40%. The length and severity of negative energy balance postpartum are unfavorably correlated with fertility, suggesting that the length and severity of negative energy b...
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