Bacterial and total fatty acids production rates in crossbred calves fed on various hay diets Bacterial production rate of male crossbred calves fed on wheat straw based diet supplemented with different urea molasses mineral block licks Effect of feeding leguminous hays with synthetic saliva or treated with formaldehyde on rumen fermentation pattern, bacterial production rate and flow rate of liquid digesta in crossbred calves Effect of supplementing urea molasses mineral block lick to straw based diet on DM intake and nutrient utilization Nutrient utilization, growth rate and body composition in crossbred calves supplemented with urea molasses mineral block licks Recent advances in the production and use of urea molasses mineral blocks in India