Effect of genetic merit and concentrate supplementation on grass intake and milk production with Holstein Friesian dairy cows

From: Journal of Dairy Science | Date: February 1, 2003| Author: Delaby, L; Dillon, P; Faverdin, P; Rath, M; Stakelum, G; Kennedy, J | Copyright information

ABSTRACT

A total of 48 high genetic merit (HM) and 48 medium merit (MM) cows, each given a low (LC), medium (MC), or high (HC) level of concentrate supplementation, were used in a split-plot design experiment, which was run in three consecutive years, to evaluate animal production responses. Individual cow intakes were estimated twice each year while at pasture; measurement period 1 (MPI) was in May/June, and measurement period 2 (MP2) was in early September, corresponding on average ...

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