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Effects of Supplementary Bulky Concentrate Feeding on Milk Production

Department of Dairy Science, Florida Agricultural Experiment Station, Gainesville

ABSTRACT

Ninety lactations of 200-day duration were completed by Jersey, Guernsey, and Holstein cows assigned to one of three treatment groups: (A) concentrates fed individually according to the Morrison standard; (B) A, plus individually fed bulky concentrates, and (C) A, plus group-fed bulky concentrates. All animals received the same good to excellent quality succulent forage ad libitum. Daily consumption rates for concentrates and bulky concentrates averaged: (A), 8.44 and 0 lb; (B), 8.51 and 4.91 lb; and (C), 7.96 and 4.91 lb. Forage intake was not measured. Average daily 4% fat-corrected milk yields were: (A), 33.3 lb; (B) 34.2 lb; and (C) 32.8 lb; differences were not significant. Differences in percentage of fat, solids-not-fat, protein, chloride, and titratable acidity in milk of the three treatment groups also were small and not significant.

¹ Florida Agricultural Experiment Stations, Journal Series No. 1665.