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Feeding Value of Fermented Waste Milk with or Without Sodium Bicarbonate for Dairy Calves

Louisiana Agricultural Experiment Station, Louisiana State University, Baton Rouge 70803

ABSTRACT

Effects of feeding waste milk from antibiotic-treated cows on growth, feed efficiency, and incidence of scours of dairy calves were studied. Twenty-four newborn Holstein heifer calves were assigned at random to one of the following treatments: 1) fresh normal milk, 2) fresh waste milk, 3) fermented waste milk, 4) fermented waste milk plus sodium bicarbonate. Means for fat, crude protein, and total solids in normal milk (3.25, 3.05, and 11.84%) were lower than the same components for fresh waste milk (3.82, 3.42, and 12.59%) and fermented waste milk (4.02, 3.42, and 12.74%). Mean pH's for normal milk, fresh waste milk, and fermented waste milk were 6.6, 6.6, and 5.1. Calves were fed colostrum the first 3 days of life, and their respective treatment milk at 10% of body weight for 42 days. Dry calf feed was offered ad libitum beginning on day 4, and water was available at all times. Mean weight gains (kg) and ratios of average dry feed to gain (kg/kg) for the 42-day treatments were: 1) 19.2, .6; 2) 17.6, .6; 3) 19.6, .7; and 4) 20.1, .6. Incidence of scours was measured as number of days that scours were present per calf during the 42 days. Mean scour days for each group were: 1) 2.0, 2) 1.8, 3) 3.0, and 4) 4.8. There were no detrimental effects on calves fed fresh or fermented milk from cows treated with antibiotics. Addition of sodium bicarbonate did not affect acceptance of fermented milk by calves.

¹ Department of Dairy Science.

² Department of Experimental Statistics.