Zinc is a trace element necessary for the growth and breeding of livestock and poultry. When zinc deficiency in feed or zinc in the feed is not easily absorbed by livestock and poultry, zinc deficiency occurs in livestock and poultry, leading to body thinning of the livestock and poultry, thickening of the skin, marked shrinkage of the testes of breeder and breeder, reduction of sperm, growth, Breeding is affected. Therefore, livestock and poultry feed must not be deficient in zinc, in some zinc-deficient livestock and poultry feed, zinc should be properly supplemented.
Zinc supplementation of livestock feed is appropriate, and zinc sulfate or zinc carbonate can be used to mix in. The amount of supplementation can vary depending on the species and growth period of livestock and poultry. Generally, the amount of zinc sulfate or zinc carbonate added per kg feed is 50-60 mg of pigs within 20 kg, 20-50 kg of pigs and 40-50 mg of pregnant sows, and 50-100 kg of pigs. 30-50 mg, 40-60 mg for sows, 30 mg for sheep, and 50-100 mg for birds. If livestock and poultry have symptoms of zinc deficiency, the amount can be increased by 0.5-1 times. When zinc sulfate or zinc carbonate is added to livestock and poultry feed, the food intake of calcium and zinc by livestock and poultry must also be adjusted so that the calcium content in the feed can be maintained at 0.65%-0.75%. In order to achieve the purpose of zinc supplementation.
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