1, the rumen lysine - mechanism of action

Since lysine and methionine are considered to be the main limiting amino acids of ruminants, virtually all experimental studies of adding amino acids have focused on these two amino acids. Continuous experiments have shown that when zein is the main rumen protein, lysine is clearly the first limiting amino acid; when zein is rarely supplied, and soybean meal is the main ruminal protein, methionine is clearly the first. Restricted amino acids. Ordinary lysine is almost completely decomposed by microorganisms in the rumen, and the coating material sensitive to pH is selected. The lysine is coated and subjected to special homogenization treatment, which is smoothly passed through the rumen and released in the normal stomach and small intestine, thereby being digested and absorbed to improve the synthesis efficiency of the protein. More than 90% of the coated lysine can pass through the rumen without being destroyed, and can be fully utilized and absorbed in the small intestine. The utilization rate in the small intestine is as high as 90%.

The advantage of protein fermentation in the rumen is that it can convert poor quality proteins into bacterial proteins with high biological value, and also convert non-protein nitrogen such as urea into bacterial proteins. But the downside is that feed protein is lost through the rumen being broken down by microorganisms to form a large amount of ammonia, especially high quality protein. If the rumen protein utilization rate is calculated as 85%, then the utilization rate is only about 50% after being converted into bacterial protein and then absorbed through the intestinal tract. Therefore, it is necessary to try to reduce the degradation degree of high-quality protein and synthetic amino acid in the rumen.

2, the rumen lysine bottom spray fluid bed coating machine - equipment overview

The bottom jet fluidized bed coating machine can be used for material coating of pharmaceutical, food and chemical products to achieve taste masking, moisture proof, shading, anti-oxidation, anti-decomposition, etc., and to increase the added value of the product. The equipment has high degree of automation, precise control, complete once in a closed state, good coating effect and less loss of packaging materials.

By adding a spacer ring with upper and lower ends and corresponding sieve plates with different opening ratios in the hopper, the material movement is controlled to form an ordered fluidization state. The spray is added to the system through a pneumatic nozzle mounted in the center of the sieve plate. The nozzle is upward and sprays from bottom to top in the same direction as the material moves. There is a certain distance between the spacer and the sieve plate to ensure that the material can smoothly flow from the outside of the spacer to the spacer to form a circulating and reciprocating flow state.

In the bottom spray device, the fluidization state of the material is very regular. The interval between the materials and the sprayed liquid mist is very regular. The coating liquid sprays on the surface of the ordered particles near the nozzle, and the liquid mist spreads uniformly. The film thickness is uniform, there is no pores, and the performance of the film is not good due to the disorder of movement as in the top spray.