In order to prevent the emergence of vitamin E deficiency under different feeding and management conditions and meet the needs of high-level production performance of livestock and poultry, some scientific research institutions have summarized the optimal vitamin E requirements for pigs in China based on a large number of test results (in kg of feed. The amount of added): pigs and pigs add 60 to 100 mg, 30 to 60 mg of middle and large pigs, 60 to 80 mg for pregnant and lactating sows, 20 to 60 mg for chickens, 20 to 30 mg for medium chickens, Chicken 30 to 50 mg, breeder chicken 40 to 80 mg, laying hens 15 to 30 mg. If the fat content in the diet is higher than 3%, the amount of vitamin E should be added at the recommended amount based on the increase in the proportion of vitamin E5 mg per 1% increase in fat.
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