Milk components biosynthesis of Indonesian Friesian Holstein dairy cattle at a different milking interval

Abstract

The biosynthesis of milk and its components is an important biological process in dairy cattle which determines the milk quality. Milking interval has an influence on milk components biosynthesis and the dairy farm labor cost as well as the management. Different milking interval resulted in different milk yield and its respective components. Thus, this study aimed to observe the effect of milking interval on the synthesis of milk components in Indonesian Friesian Holstein. In total, 3562 data of milk components were retrieved from the evening (10 hours, milking time 03.00 PM) and morning (14 hours, milking time 05.00 AM) milking interval, 1781 data in each. Milk components were observed as the percentage of fat, protein, lactose, and total solids non-fat. The result shows that evening milking has higher (p<0.05) percentage of fat, protein, lactose and solids non-fat compared to morning milking which was 4.067±0.68 vs. 3.68±0.62%; 2.68±0.13 vs. 2.62±0.12%; 4.02±0.20 vs. 3.94±0.18%, and 7.32±0.35 vs. 7.17±0.33%, respectively. This study concluded that a longer milking interval tends to give more time for the synthesis of milk components when compared to the short one.