Effect of Different Vitamins and Mineral Premix Supplementations on Milk Yield and Composition in Dairy Cows

Abstract

The current research was carried out in a Completely Randomized Design to interpret the effect of different dietary supplementations of vitamins and minerals premix on milk yield, milk composition and blood composition of dairy cows (HF cross Jersey). In the instant study, 4 groups were randomly constructed (A, B, C and D) and a total of 12 dairy cows (HF cross Jersey) having almost same milking stage and age were being divided into these 4 groups, each with 3 animals. Dietary supplementations of vitamins and minerals premix were provided two times a day at the rate of 0, 10, 15 and 20g/kg rations (TMR) according to 3 % body weight of the animals to each group A, B, C and D respectively. Among different treatment the milk production was remarkably different (P<0.05). From the result it was confirmed that average milk production (liter/day) was higher 14.4±0.52 (liter/day) with treatment of 20 g/kg ration supplemented with vitamins and minerals premix while it was lower with vitamins and minerals premix-0 (control treatment) (13.6±0.3). Mean milk fat with Vitamins and Minerals premix-20 was (3.74±0.35) while it was lower with dietary supplementations of vitamins and minerals premix- 0 (3.72±0.42). Mean milk protein with Vitamins and Minerals premix- 0 (3.45±0.23), while it was higher with Vitamins and Minerals premix-20 (3.49±0.21). Mean milk total solids (%) with Vitamins and Minerals premix-0 was lower (10.1±0.31^c) while it was higher (11.7±0.41) with Vitamins and Minerals-20. Mean solid not fat (%) with Vitamins and Minerals premix-0 was (8.2±0.29), while it was lower (7.3±0.38) with Vitamins and Minerals premix-20. Among different treatment the blood profile was remarkably different (P<0.05). The average value of blood glucose (mg/dl) was changed. The blood glucose value with Vitamins and Minerals premix-0 was (64.3±0.23) while it was (72.1±0.21) with Vitamins and Minerals premix-20. It was deduced from the current study that high milk production, enhanced glucose and urea % in blood were attributed to dietary supplementation of Vitamins and Minerals premix at 20 g/kg of ration offered two times daily.