Feeding urea when feeding
When feeding high-protein diets to feed cattle urea, high protein diets such as soybeans, black beans, bean cakes, pumpkins, black locust leaves, alfalfa, and amorpha leaves should be banned or deprived. Reasons: First, the above feeds are feed containing urease, urease can accelerate the decomposition of urea in the rumen of cattle, and release a large amount of ammonia in a short time, so that the beneficial bacteria in the rumen can not multiply, so that cattle can not get a lot of bacteria Body protein, no significance for feeding urea. At the same time, ammonia released from the rumen can cause bovine urea poisoning. Second, urea and feeds containing high protein are fed at the same time, affecting the effect of urea feeding. For feeds with a crude protein content of more than 12%, urea should be banned from feeding cattle and sheep at the same time even without urease.
When sulfaamide additives are banned from feeding during the feeding of cattle urea, the following feed additives and drugs should also be banned: antibacterial bacteria, bacteriocin, bacteriocin, chlordiazepoxide, sulfamethoxazole, and sulfathiazole. Because during the feeding of urea, it is necessary to supply an appropriate amount of sulfur-containing feed additives or drugs. Sulfonamide feed additives or drugs can cause sulfur complexation reaction caused by thiocyanine hemoglobinemia. This not only destroys the use of sulfur by beneficial microorganisms, but also harms the health of cattle.
The urea banned by the antibacterial drug is used by the beneficial bacteria in the rumen after being eaten into the rumen. The beneficial bacteria multiply and migrate to the stomach with the feed, where it is killed by the gastric juice. Its body is used as a protein, ie, a bacterial protein, which is absorbed and utilized by cattle. If the feed additive or drug with antibacterial effect is applied at the same time during the feeding of urea, a lot of beneficial bacteria will be destroyed, so that the cattle can not obtain a large amount of bacterial protein, and lose the significance of feeding urea.
Feeding vinegar to food vinegar generally contains about 5% acetic acid, which acts as a feed additive for dairy cows to increase milk production and is inexpensive. However, vinegar can reduce the pH of the ruminal contents of cattle, inhibit the decomposition of urea and reduce the absorption of ammonia by cattle. The effect of vinegar is opposite to the mechanism by which urea is utilized by cattle, so that urea cannot be used as a protein source. Therefore, feeding urea during the fattening of cattle to promote weight gain should be banned from feeding vinegar at the same time.
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