Effects Of Different Kinds Of Addition Palm Oil Products On The Performance And Blood Indicators Of Dairy Cow

In the early lactation period of dairy cow, the low dry matter intake level led to negative energy balance. The traditional approach the cattle workers preferred was increasing concentration content to reduce the possibility of nutrition deficiency during later periods (NRC,1988). Adjusting concentrate to roughage ratio to increase the proportion of concentration has an adverse impact on the digestive function of the cow and milk fat content, and also the effect of increasing energy intake was slightly. Including fat content or feeding high fat diet resulted in increasing the diet concentration but without decreasing milk fat level, and lowering acidosis risk. The objective of current study was to determine appropriate ratio of palm oil products including in concentrates and their effects on the animal performance, digestibility and blood biochemical indicators to provide information for further application.(1)The results indicated that there were no significant difference in the milk yield, biochemical indicators, feed intakes, apparent digestibility and energy and nitrogen metabolism during 200g capryli-capric acid triglyceride (B1 group) and 400g capryli-capric acid triglyceride (B2 group) were included into the concentrate respectively, (P>0.05), but the milk fat significantly (P<0.05) increased.(2)Including 200g ployfat K300 (C1 group) and 400g ployfat K300 (C2 group) in concentrates significantly increased the milk yield and milk fat content (P<0.05), and had a positive influence on the improvement of Ca and DE digestibility, but there was insignificant effect on blood biochemical indicators, feed intakes, apparent digestibility and energy and nitrogen metabolism (P>0.05).(3)Milk yield in D1 group (with including 200g ployfat A600 in concentrate) was significantly increased (P<0.05), and feed intake in D2 group (with including 400g ployfat A600 in concentrate) decreased, but not significantly. There was no significant difference on blood biochemical indicators, feed intakes, apparent digestibility and energy and nitrogen metabolism in both D1 and D2 groups (P>0.05).(4)Milk yield in E1 group (with including 200g ployfat K100 in concentrate) and E2 group (with including 400g ployfat K100 in concentrate) was significantly increased (P<0.05). The milk fats of the two groups were increased. Dry matter intake of E1 group was the highest, and there was no significant difference among other groups (P>0.05). The digestibility and the utilization of the feeds were also improved in the E1 group. There was no significant difference on blood biochemical indicators, feed intakes, apparent digestibility and energy and nitrogen metabolism in both E1 and E2 groups (P>0.05).