Feeding urea as an additive can not only promote the weight gain of cattle, but also save a lot of protein feed. However, if the cow is suddenly fed with urea or the feed is too large, urea poisoning may be caused. According to the experiment, the feed amount of urea should be controlled to less than 1% of the total dry matter mass of the feed or less than 3% of the concentrate feed. Usually 150 grams per day per adult cattle, up to no more than 300 grams is appropriate. However, at the beginning, the amount of urea fed must be small, and this must be achieved by a general incremental process. When feeding, mix well with other feeds and do not feed alone. Within half an hour after feeding, cattle should not be allowed to drink, nor can urea be dissolved in water for cattle to drink. If the protein feed in the diet is sufficient, no additional urea is needed. In addition, the development of rumen microbes in yaks is incomplete, and urea can not be added to promote fattening. ?
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