Under the condition of intensive pig raising, pigs eat mixed (mixed) feeds such as corn, soybean meal and fish meal. The dietary diet that has become increasingly “precise†has a very low crude fiber content, which leads to digestive dysfunction, constipation and other “rich diseases†in pigs, which affects the improvement of pig-raising efficiency. In fact, letting pigs eat “coarse†grain and maintaining proper crude fiber content in the diet are particularly effective in reducing the cost of raising the pig and increasing the production performance of the pig.
Maintaining the appropriate crude fiber content in the raw pig diet can produce the following effects:
The first is to regulate nutritional levels. After the dietary fiber enters the gastrointestinal tract, its volume expansion increases, which can expand the gastrointestinal volume, so that the pig can endure hunger. At the same time, crude fiber can dilute the concentration of nutrients such as energy and protein to achieve rational use of feed.
The second is to reduce feed costs. In order to increase the crude fiber content of the feed diet, it is possible to replace the feed with a lower crude fiber content but higher in price by using a feed with a higher content of crude fiber but a lower price, so that the unit feed cost is reduced with the same output. ;
The third is to stimulate gastrointestinal motility. After crude fiber enters the gastrointestinal tract, it can stimulate gastrointestinal motility, facilitate the absorption of nutrients in the gastrointestinal tract, promote normal excretion of feces, and reduce the occurrence of gastrointestinal ulcers;
The fourth is to control fat deposition. Increasing crude fiber in feed can reduce serum total and low-density lipoprotein levels, which can effectively regulate fat metabolism and control fat deposition in pigs;
The fifth is to promote the health of pigs. The soluble fraction of dietary fiber plays an important role in reducing the secretion of gastric acid in pigs, and has a very strict role in the colonization of pathogenic bacteria in the intestine, thus limiting the growth of pathogenic bacteria in the intestine and promoting animal health.
The sixth is to improve sow reproductive performance. Addition of cellulose to the diet of pregnant sows can increase reproductive performance of sows. On average, each sow produces 1.5 more piglets. The growth rate of piglets produced by the piglets produced is lower than that of sows fed with fiber. 20%.
Different physiological stages of pigs have different digestibility of cellulose, and appropriate proportions should be added to the diet according to different physiological stages and physiological characteristics of the pigs. The crude fiber content of the pigs at different physiological stages is recommended as follows: boars, 6%-8%; pregnant and pregnant sows, 8%-12%; lactating sows, 7%; reserve pigs, 6.5%-8%; Weaned piglets, 3%-4%; finishing pigs, 6%-7%.