Urea These non-protein nitrogenous compounds can provide a nitrogen source for rumen microorganisms to synthesize proteins. Due to the high nitrogen content of such additives, such as pure urea containing 47% nitrogen, if all are used by rumen microorganisms, 1 kg of urea is equivalent to 2.8 kg The nutritional value of protein, or the nutritional value of 7 kg of soybean cake protein, is equal to the nitrogen content of 26, kg of gramineous seeds.

(1) Protein Protein is a nitrogen-containing compound, its basic composition is amino acids, there are many types of amino acids, but only 20 kinds of protein. Protein is the main component of sheep's body tissues and cells, and is a nutrient necessary to maintain normal metabolism, growth, reproduction and production of various products. Because sheep are ruminants, they can use the emblem in the rumen to make amino acids and synthesize high-quality bacterial proteins. Therefore, the quality requirements of feed protein are not very strict. Rumen microorganisms can use non-protein nitrogen-containing compounds (such as urea and ammonium salts) to convert them into proteins needed by sheep. According to this feature, appropriate amounts of urea can be added to the sheep's diet as a substitute for feed protein. Generally, when the protein content of goat diet is 6% -10%, the effect of adding urea is the best.

Corn stover silage is juicy and delicious, aromatic, rich in nutrients, high in digestibility, and the silage method is simple and easy, and the cost is low. As long as the silage raw materials are transported back in a short time, grasp the appropriate moisture, quickly crush and compact Tightly sealed, you can get the best silage.

The trade name of monensin is "rumenin", which is a feed additive widely used in ruminants. It was originally a substance secreted by streptomycin. It has the control of the proportion of volatile fatty acids in the rumen and reduces the rumen Medium protein degradation, reduce feed dry matter consumption, improve nutrient utilization and increase animal energy utilization and other functions. Its preparation, rumen sodium, has no adaptability to rumen microorganisms, so it has a longer action time, and has been officially included in beef cattle additives in the United States. Supplemental feeding of rumen sodium can reduce feed consumption and increase daily gain, and the residual amount is extremely small, which is safe for humans and has no side effects. Therefore, rumin sodium is a very promising feed additive.