Loading...
Journal Article

Journal article

Effects of fat-protein supplementation of diets for cows in early lactation on milk yield and composition  [2006]

Strusinska, D.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Animal Nutrition and Feed Management) E-mail:danuta.strusinska@uwm.edu.pl Minakowski, D.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Animal Nutrition and Feed Management) Pysera, B.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Animal Nutrition and Feed Management) Kaliniewicz, J.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Animal Nutrition and Feed Management)

Access the full text

An experiment was carried out on 37 high-performance Holstein-Friesian cows during the first 120 days of lactation in order to determine the effects of energy-protein supplementation on milk yield and composition. The cows were fed balanced diets and a concentrate containing 19% crude protein (group 1) or 17.5% crude protein and 1 kg of fat-protein supplement Megapro Plus (MP) (group 2) or 19% crude protein and 1 kg of MP (group 3). In comparison with the group 1, the mean daily milk yield recorded in groups 2 and 3 was by 10.3% higher and FCM yield increased by 15.5% and 12.1%, respectively. A decrease was noted in solids-non-fat (group 2) and somatic cell count. MP supplementation of a diet with a reduced (to 3%) "00" rapeseed meal concentration in concentrate (group 2) resulted in a significant increase in the concentrations of unsaturated fatty acids and hypocholesterolaemic acids in milk, recorded on the 120th day of lactation.

From the journal

Czech Journal of Animal Science - UZPI (Czech Republic)

ISSN : 1212-1819