Effect of Probiotic Supplementation on Milk Yield in Lactating Holstein Fresien Cross Bred Cows

On farm trial was conducted on 20 lactating crossbred cows were randomly divided into two groups on the basis of milk yield (10 to 13 kg/day) and day of calving less than 60 days to see the effect of supplement probiotic on milk yield for continuous three year (2014 to 2017). Cross bred cows were fed concentrate, green and dry fodder and wheat straw in control groups and addition of 20 grams of Probiotic was given in treatment group. Experimental feeding was continued up to 90 days. The average milk production and fat percentage was significantly higher in treatment group. Milk production efficiency was also significantly higher in probiotic supplemented in comparison to control group. It was concluded that probiotic supplementation @ 20 gram per day per animal in cows significantly increase the milk production over the control group.