Article
Estimation of genetic parameters for concentrations of milk urea nitrogen.
Journal of dairy science - 1 Jul 2003
Wood G M, Boettcher P J, Jamrozik J, Jansen G B, Kelton D F
Abstract excerpt
The objective of this study was to use field data collected by dairy herd improvement programs to estimate genetic parameters for concentrations of milk urea nitrogen (MUN). Edited data were 36,074 test-day records of MUN and yields of milk, fat, and protein obtained from 6102 cows in Holstein herds in Ontario, Canada. Data were divided into three sets, for the first three lactations. Two analyses were performed...
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