Three series of trials were conducted to evaluate the effect of monensin on the growth performance of cattle. Twenty-four trials were conducted to evaluate the addition of monensin at 200 mg/d to limited quantities of supplemental concentrate for growing cattle grazing pastures. The pastures ranged from dormant end-of-the-season grasses and crop residues to lush green pastures, and were located...

one hundred and seventy four ghezel and 130 mehraban weaned male lambs were utilized to study the effect of on post weaning growth on slaughter weight and carcass traits. the lambs in each breed were randomly assigned to predetermined slaughter weight groups of 30, 40 or 50 kg and were so far fattened as to reach their assigned slaughter weights. the average post weaning daily gain was estimate...

Feed substrate containing probiotic culture of Lactobacillus acidophilus, Bacillus subtilis and Sacharomyces cerevicae were prepared for feeding calves. Twelve 2 weeks old calves distributed equally in two groups (6 each) supplemented with (treated) or without feed (Control). Calves reared an individual pan provided ad libitum suckling, calf starter, soft green grass. In 90 days trial period da...