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Urea Feeding Technology
One, urea feed cattle pay attention to what matters? 1, the feeding target should be clear. Urea can only feed adult cows and young cattle. Because the rumen of the calf has not yet fully developed, the microbial community has not yet been established, and it lacks the ability to use urea, so it is not appropriate to feed calves. 2, feeding method should be appropriate. Because urea is highly hygroscopic and easily dissolved into ammonia, it cannot be fed alone or in water. Usually the grass is cut short and then soaked in urea solution and stirred constantly. On the one hand, the crude fiber in the forage is softened and the lignin is reduced to improve the digestibility of the forage, and on the other hand, the urea is evenly adsorbed on the forage to avoid uneven mixing of the urea. ? 3, urea dosage should be accurate. Generally, urea should account for 20-30% of the digestible protein requirement of cows, and it can be added by 1% of the crude material consumed. Adult cattle use about 100 grams of urea every day, 1-80-year-old young cattle 50-80 grams, 2-3 times feeding, can not increase the dose, so as not to cause poisoning. ? 4, can not drink water immediately after feeding urea. Because urea is quickly absorbed after it dissolves in water, the concentration of nitrogen in the blood increases and it poisons. ? 5, there must be a process of adaptation. The poor palatability of urea, cattle do not want to eat, in the amount of 7-10 days of feeding from less to more, so that the digestive tract of cattle slowly adapt. ? 6, urea can only provide nitrogen. When urea is used to supplement crude protein, energy, minerals, and vitamins must be supplemented at the same time in order to receive the desired effect, but it cannot be fed with legumes because the legume seeds contain urease, which promotes the decomposition of urea. Second, urea poisoning prevention and treatment of urea fed too much, in the rumen to form a large amount of free ammonia, excessive ammonia through the stomach into the blood, prone to poisoning. Symptoms include restlessness, muscle cramps, runny nose, frequent urination and other symptoms, usually occur 15-40 minutes after feeding, and there is a risk of death if not treated promptly. 1. Preventive measures: Grasp the amount of urea fed and the method of feeding. During the first 10 days of feeding, pay attention to the observation within half an hour after each feeding. If there is no abnormal reaction after eating, the body strength is normal. The symptoms of poisoning should be stopped immediately. 2, treatment: 1 to cattle gavage cold water 20-40 liters. Because cold water can reduce the temperature of rumen gastric juice, thereby reducing the dissolution of urea; cold water can also dilute the concentration of ammonia, reducing the rate of ammonia absorption in the rumen. 2 Use vinegar 1 kg, add water 3 to 5 times to the cattle gavage, to adjust the pH of the rumen, prevent urea decomposition into ammonia in the rumen, to avoid absorption, its detoxification effect is very good. 3 100-200 milliliters of sodium glutamate, add 10% glucose 1000-2000 ml, intravenous drip to the cattle, so that excessive blood ammonia combined into non-toxic glutamyl ammonium excreted with the urine.