Effect of Feeding Rumen Protected Nutrients on Milk Production in Crossbred Cows

In one trial (Trial I), 16 Crossbred cows (HF x Jersey) were divided into two groups of 8 each, based on milk yield, fat % and stage of lactation. Animals in both groups were fed similar basal ration. In addition to basal ration, animals in control group were fed 1.0 kg untreated sunflower meal (CP 28%) and in experimental group 1.0 kg protected sunflower meal (CP 28%, UDP 74% of CP, NDIN 0.17%, ADIN 0.31%). Average increase in milk yield (kg), fat and protein (%) in experimental group were 1.1 (P<0.05), 0.2 and 4.3 (P<0.05), respectively. Net average daily income increased by Rs. 9.61 on feeding 1.0 kg protected sunflower meal in lactating cow. In another trial (Trial II), 20 crossbred cows (HF x Jersey) were divided into two groups of 10 each and all animals were fed similar basal ration. Animals in experimental group were fed 1.0 kg bypass fat/protein supplement (Fat 32–33%, CP 25–26%, NDIN 0.46%, ADIN 0.21%). Degree of fat protection was 79 per cent of the total, whereas protein protection was 80 per cent of total CP. Average increase in milk yield in experimental group was 1.1 kg (p<0.05). Fat and protein % increased by 0.6 (p<0.01) and 0.4 (p<0.05) respectively. Net average daily income increased by Rs. 10.18 on feeding 1.0 kg protected fat/protein supplement in lactating cows. In the present study supplementation of protected protein and protected fat/protein in the ration of milch cows was economical.