Effect of Crude Fiber Level on Intestinal Microorganism Number of Meat Goose

Effect of Crude Fiber Level on Intestinal Microorganism Number of Meat Goose

Crude fiber (CF) is a major component of the plant cell wall and has a dual role in animal nutrition. In general animal feed, it will contain a certain amount of crude fiber, when the crude fiber content is within the appropriate range, it has the function of maintaining the normal structure and function of the intestine, preventing the animal from eating food and improving the quality of the carcass, and if it is too high, It will affect the digestion and absorption of nutrients. In general, we need to perform nutrient analysis on the feed of meat and geese. For example, crude fibers can be measured by fiber analyzers.

The number of microbial flora is very dependent on the diet as the source of the final metabolizing substrate. Therefore, changes in dietary composition and nutrient concentration have a significant effect on the number of intestinal microbial flora. Zhang Ming'ai et al.'s experiments showed that adding ryegrass powder to the diet significantly enhanced microbial activity and was beneficial to the hydrolysis of cellulose. Wang Baowei et al reported that with the increase of CF levels, bifidobacteria and lactobacilli in goose intestine increased significantly. In this test, the number of Lactobacillus and E. coli per gram of cecal contents was significantly higher than that of the ileum. This was due to inhibition of microbial activity in the small intestine by the action of gastric acid and bile, and the excretion of digestive juice in the small intestine was relatively strong. There are fewer bacteria. The higher CF level (8.98%) significantly increased the number of Lactobacillus in the intestine, consistent with the Yubaowei study results. Under this test condition, the number of intestinal lactobacilli increased significantly with increasing CF levels (5.03% to 8.98%). This may be due to the fact that endogenous digestive enzymes cannot degrade non-starch polysaccharides (NSPs) in the diet. Therefore, the nutrients contained therein cannot be effectively used, causing them to flow into the intestine of the posterior segment and cause the proliferation of bacteria. When the CF level was 10.98%, Lactobacillus and Escherichia coli both decreased, which may be due to the high CF level, which caused the cecum to retain more cellulose. Due to the characteristics of fiber water retention and viscosity, the cecum pH, humidity, etc. Differences in normal levels have led to a decline in the number of microorganisms. Garcia et al. pointed out that the higher concentration of acidic detergent lignin (ADL) in the diet affects the caeca fermentation. Morisse et al. found that increased NDF levels in the diet caused a rise in cecal pH and NH3-N concentrations.

From the above, it can be seen that the content of fiber in the feed seriously affects the number of microorganisms in the intestinal tract of meat and geese. The number of microorganisms is closely related to the health of animals. Therefore, controlling the content of crude fiber in feed can effectively improve animal quality. The control of the crude fiber content can be determined by means of a crude fiber analyzer for the determination of the crude fiber content in the feed. Irregularly measuring the crude fiber content in the feed and then controlling its crude fiber content in time can effectively guarantee the quality of the feed.