Brouk, M.J.; Smith, J.F.; Grigsby, K.
(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2006)
Forty lactating Holstein cows were allocated into groups of 5 cows each and assigned to 8 pens containing 10 freestalls each. Each group contained 3 heifers and 2 multiparous cows. Groups were balanced by milk production ...