Replacement of soybean meal with chowder in feed

The main source of protein feed is cottonseed meal, rapeseed meal, peanut meal, sunflower meal, etc. The sum of the amount used in the full-price compound feed is not the use of fish meal, the use of a small amount of soybean meal, or the basic use of soybean meal, cotton seed meal, and rapeseed meal. More than 12%.

The application of chowder in feed

In recent years, China's animal husbandry and feed industries have developed rapidly, and the contradiction of shortage of feed resources has become increasingly prominent. According to the prediction of experts, from 2010 to 2020, the difference between China's protein feeds will be 24 million tons to 48 million tons, and the difference between cakes and pancakes will be 25.6 million tons. For a long time, soybean meal has been used as a raw material for protein feed in China, which has caused the supply of soybean meal to become increasingly tense, and prices have risen and fluctuate irregularly.

The crude protein content of soybean meal and chowder

China produces a large amount of chowder each year, such as cottonseed cakes with annual output of more than 6 million tons, and rapeseed cakes with about 3 million tons. The current high feed value. All kinds of protein content are high, such as peanut protein content higher than soybean meal, cottonseed meal and soybean meal are close, rapeseed meal, sunflower seed meal and other crude protein content is equivalent to about 80% of soybean meal. The average digestibility of some amino acids is also very high, such as up to 89% of sunflower seed meal (the average digestibility of soybean meal is 90%). In addition, chowder is also rich in other nutrients. For example, most of the medlars contain high linoleic acid, and the available phosphorus content is also higher than that of soybean meal. The content of linolenic acid in flaxseed meal is very rich, and the vitamin B content of sunflower seed meal is significantly higher than that of soybean meal.

However, due to the inherent defects of high content of anti-nutritional factors and multiple toxic substances, the amount of its use in feed has been difficult to increase. Through research and practice, it has been proved that the use of modern bioengineering technology-enzyme preparations to increase the usage and utilization of chowder in feed is currently one of the most effective methods.

Miscellaneous issues in feed applications

The content of coarse fiber is high, especially when the shelling is not sufficient during processing. For example, the coarse fiber content of cottonseed cake can reach up to 17%, the content of flaxseed meal can reach 28%, and the crude fiber content of crust seed pressed can reach up to 32%. Crude fibers mainly include cellulose, hemicellulose (arabinoxylan, etc.), pectin, and lignin. Crude fiber not only cannot be digested and utilized by monogastric animals, but also has a "dilution" effect to reduce the nutrient concentration of the raw materials of the loquat, and it also affects the digestion and absorption of other nutrients, showing an anti-nutritive effect.

Several protein feed ingredients pig amino acid ileal true digestibility

High cellulose content not only encapsulates nutrients, hinders full contact with digestive enzymes, but also increases the loss of endogenous nutrients, reduces nutrient utilization in feed, and can also be associated with calcium, copper, iron, zinc in diets. The chelation reaction of other metal ions generates insoluble salts that affect the absorption and utilization of mineral elements.

Effect of cellulose content on deposition rate of mineral elements in broilers

Contains more water-soluble non-starch polysaccharides (SNSPs), such as xylan, to increase the viscosity of intestinal chyme, resulting in difficult movement of intestinal contents, impeding the interaction between digestive enzymes and substrates, and forming immobile water layers. The absorption of nutrients creates physical barriers. It also increases water holding capacity and reduces the diffusion rate of digestive products to the mucosal surface, thus greatly affecting the use of nutrients.

Arabinous xylan content and protein egg digestibility

Anti-nutritional factors containing protein properties such as trypsin inhibitors and phytohemagglutinin, which can bind to trypsin and chymotrypsin and inactivate it, resulting in hypertrophy of the pancreas; tightly bound to the mucous membrane of the small intestine and affecting the absorption of nutrients As a result, changes in the activity of digestive enzymes and the excessive secretion of endogenous proteins and the increase in the amount of mucoproteins are finally manifested in reducing the utilization of nutrients and inhibiting the growth of animals.

Proteins containing specific structures, some of which are difficult to cleave by enzymes in the digestive tract, must be cleaved using the appropriate enzyme preparation.

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