Article
An investigation into genetic and phenotypic variation in time budgets and yield of dairy cows.
Journal of dairy science - 1 Jan 2016
Løvendahl Peter, Munksgaard Lene
Abstract excerpt
Time budgets (TB) of lactating Holstein cows in a freestall loose housing system were recorded twice in early and late lactation to study genetic and phenotypic variation in TB. Time budget traits were recorded using focal animal scanning at 10-min intervals for full 24-h sessions. The study included 243 first-lactation cows, with 389 TB records in early lactation (50 to 123 d in milk) and 403 records in late...
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