Milk Production
Cows were milked twice daily at approximately
12-h intervals, and milk weights were recorded at each milking and stored in an on-farm dairy-management software program (DairyComp 305; Valley Agricul- tural Software, Tulare, CA). Milk weights from the 7-d period preceding the weekly milk and plasma sample
Journal of Dairy Science Vol. 98 No. 4, 2015
collections were extracted from the software program
and used to calculate weekly average milk production.