Urea is a non-protein nitrogen compound with a nitrogen content of about 46%. One kilogram of urea is equivalent to 2.8 kilograms of protein or 7-8 kilograms of nitrogen contained in vegetable oil cakes. It is a source of potential protein feed. Urea cannot be directly used as a nutrient by domestic animals. However, cattle are ruminants. The stomach tumor contains a large number of microorganisms and ciliates. The microorganisms can use ammonia to decompose the ammonia synthesis bacterial protein and the bacterial protein into the stomach for digestion and absorption. Body use. At present, it has been used throughout the country to partially substitute protein feed for cattle and achieve good economic benefits. When urea is used to feed cattle, it is necessary to grasp the amount and feeding method, otherwise it will affect the feeding effect and cause serious poisoning and even death of cattle. Therefore, urea-fed cattle should master some principles. First, the amount of feed should be accurate and appropriate. The amount of urea fed is between 20% and 30% of the dietary crude protein or no more than 1% of dietary dry matter, and adult cattle have 60-100 grams per head per day. Yak is forbidden to feed urea because rumen function is not yet fully developed. Second, the feeding method should be appropriate. When urea is fed, start feeding less and gradually increase the amount so that the cow has an adaptation period of 7-10 days. The daily amount of feed should be evenly distributed throughout the day's diet. Generally, the urea is evenly stirred until the crude feed is mixed. Feed, it is best to use urea mixed with coarse material and then mix well with coarse material, to avoid uneven urea mixing, the requirements of the current feeding is strictly prohibited urea alone feed or soluble in water, drinking, should be fed urea 1.5-2 hours After drinking water. When using urea to feed cattle, the protein content in the diet is best at 9%-12%. When the dietary protein content is 13%-18%, the utilization rate of urea will decrease as the dietary protein level increases; when the dietary protein level is as high as 18%, the feeding of urea is ineffective or even harmful; when the dietary protein is as low as 8 %, the growth and reproduction of microorganisms are affected and the utilization of urea is reduced. Third, strengthen the observation of cattle. After feeding urea, special attention should be paid to observe the reaction within the first 10 days and 0.5-1 hour after feeding. No abnormal reaction was observed after the cows had eaten. After feeding for a period of time, the upper jaw was significant and energetic was normal. If there are symptoms of exercise disorders, muscle tremors, cramps, shortness of breath, foaming at the mouth, etc., then cow urea is poisoned and emergency treatment measures should be taken. Mild to immediately stop feeding, reducing or taking laxatives, heavy should be fed 0.5-1 kg vinegar plus 3-5 times the water or intravenous injection of 10% glucose 1000-2000 ml or injection of cardiac stimulant, hypertonic glucose, Chloral hydrate, etc. until symptoms disappear. Dentist Light,Dental Headlight,Dental Loupe Light,Led Curing Light Dental Suzhou Escomedical Equipment Co.,Ltd , https://www.escodental.com