When chickens are housed in homes, they are susceptible to vitamin D deficiency. Therefore, we must pay attention to vitamin D supplementation.
Adding vitamin D or cod liver oil to chickens can promote the absorption of calcium and phosphorus. Under normal circumstances, vitamin D2000 international unit is added per kilogram of feed, and cod liver oil is 1-2 ml per bird per day.
For severely deficient chickens, subcutaneous injections of vitamin D can be given. Each diseased chicken per day per kg body weight 6000-10000 international units, repeated every 3-5 days, usually 2-3 times will be effective, such as with oral calcium better.
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