How to apply beef cattle fattening feed additive?

(agricultural Wealth net) how to apply fattening feed additives for beef cattle?-- the use of fattening feed additives in beef cattle during the fattening period can improve the assimilation (synthesis) metabolism of beef cattle, so that more nitrogen sources in feed can be converted into bovine protein and carbohydrates into fat. Or change the concentration comparison of different hormones in cattle, coordinate the function of the endocrine system to increase the secretion of hormones conducive to the growth of cattle, or control the metabolic rate of cattle to reduce the activity of cattle, thus reducing the maintenance needs of cattle, so that more nutrients, especially the accumulation of energy substances in the body. And finally accelerate the weight gain of beef cattle during the fattening period. Many studies and production practices at home and abroad have proved that the use of fattening additives can increase daily gain by 10% to 20% and feed conversion efficiency by 8% to 20%, thus shortening the fattening period of beef cattle and obtaining higher economic benefits. The commonly used fattening feed additives for beef cattle are:-1. sodium bicarbonate. The acidic environment of rumen has an important effect on the activity of microorganisms, especially when changing the type of feed (such as changing from roughage to high concentrate in the later fattening stage), it can significantly decrease the PH value of rumen, and affect the activity of rumen microorganisms, and then affect the conversion of feed. After adding 0.7% sodium bicarbonate to beef cattle feed, the PH value of rumen can be kept in the range of 6.2-6.8, which meets the needs of rumen microorganism proliferation, so that the rumen has the best digestive function, increases feed intake by 9%, and increases daily gain by more than 10%. The buffer is composed of 66.7 grams of sodium bicarbonate and 33.3 grams of potassium dihydrogen phosphate, which accounts for 1% of the dry matter of cattle diet in the first stage and 0.8% in the second stage, the daily gain can be increased by 15.4%, and the concentrate consumption can be reduced by 13.08%. And the incidence of digestive system diseases has been greatly reduced. -- 2. Monensin is also called oncolin. It is almost not absorbed in the digestive tract of cattle, so there is generally no problem of residue in tissue and transfer to edible animal products. The application of monensin in the high concentrate fattening of shelf cattle can increase the production of propionic acid, reduce the degradation of protein in the rumen, increase the total amount of protein passing through the rumen, increase the utilization rate of net energy and nitrogen, and make the intestinal wall thinner, which is beneficial to the penetration and absorption of nutrients, and the total number of ciliates and bacteria in the rumen is increased by 1 / 2 times. It also stimulates the pituitary gland to secrete hormones to promote growth and development, thus increasing the rate of weight gain. The daily weight gain of each cow can be increased by 15% to 20% if it is mixed with concentrate or mixed with monensin and roughage. -3. Rare earths. It is the general name of 17 elements of lanthanide and yttrium scandium. When 1 000ppm of rare soil was added to the diet of fattening cattle, it was determined that the daily gain could be increased by 26.63%, the ratio of feed to meat decreased by 21.30%, and the feed conversion efficiency increased by 23.39%. -- 4. Sodium bromide. 0.5 grams dissolved in water and then mixed with concentrate feed can limit the activity of cattle, reduce energy consumption and increase the deposition of nutrients in the body. The daily gain can be increased by 16.4% to 17.7%, and the ketone weight and meat weight can be increased by 8.6% and 10.5%, respectively. -5. Probiotics. It is a kind of microbial agent which can replace or balance one or more bacteria in the gastrointestinal microecosystem, such as lactic acid bacteria, bifidobacteria, subtilis, etc., which can stimulate the proliferation of their own bacteria and inhibit the growth of other bacteria; produce enzymes, synthesize B vitamins, improve the immune function of the body, promote appetite, reduce the incidence of gastrointestinal diseases, and have the effect of fattening. The addition amount is generally 0.02%-0.2% of the cattle diet. -6. Non-protein nitrogen. Urea is the most commonly used. Cattle are ruminants, and microorganisms in the rumen can synthesize bacterial proteins (true proteins) from urea nitrogen, which can be used by cattle in the intestines. Modern cattle industry has widely used urea and other non-protein nitrogen to replace part of the protein in cattle feed to improve the digestibility of crude fiber dimension and nitrogen retention and weight gain in low-protein feed. The nutritional value of each kilogram of urea is equivalent to the protein nutritional value of 5 kilograms of soybean cake or 7 kilograms of flaxseed cake. The current feeding methods of urea are as follows: 20 grams of urea per 100 kg body weight mixed with concentrate or mixed with urea concentrate and roughage, or directly dissolved urea and mixed or sprayed on hay; or urea, corn and sugar oars mixed into liquid feed, or adding urea to make silage. The addition amount is generally 0.2% 0.5% of the wet weight of the storage. it has been suggested that the aqueous solution of urea 3.4 kg and ammonium sulfate 1.5 kg is mixed into 1 ton of silage, which not only increases the sulfur element, but also reduces the amount of urea and reduces the cost. Better feeding effect. When beef cattle are fed with non-protein nitrogen, the weight gain can be increased by 10% to 20%.