Nicarbazin, also known as coccidia, is a highly effective anticoccidial drug. The drug has many disadvantages, and the excretion is slow, and the time remaining in the meat and the egg is longer. Because the drug can aggravate the heat stress of chickens in the hot summer season and cause a large number of deaths, it should be used cautiously during the summer. Urea: a non-protein nitrogen feed additive that provides high quality protein to ruminants. In the summer, you should pay attention to two points:
1. The presence or absence of urease. Green-green feeds that thrive in summer, such as locust leaves, amorpha leaves, red clover, alfalfa, and pumpkin, all contain urease. Urease meets urea in the rumen, which can rapidly decompose urea. A large amount of ammonia is absorbed by ruminants, which can lead to ruminant poisoning.
2. The level of crude protein content. When the crude protein content in the feed is below 11%, the urea utilization rate is the highest. When the feed content exceeds 12%, the urea utilization rate is very low, and the weight gain is also lowered. The crude protein content of some dry grass powders is mostly above 12%. For example, the crude protein content of alfalfa dry powder is 16.7%, the eucalyptus powder is 17.82%, and the dry milk powder is 22.3%, which will destroy the normal utilization of urea. . Therefore, the application of urea in summer must be avoided and used with caution.
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