Factors leading to the increase of diarrhea rate in pigs and chickens

The extensive use of alternative grain raw materials increases the content of non starch polysaccharide (NSP) in feed, which may cause intestinal health problems of pigs and chickens. Sure enough, compared with the second half of last year, the diarrhea rate of chickens and pigs has really increased since this year!

Let's see what causes this phenomenon? The factors causing livestock diarrhea are very complex, including infectious factors, nutritional factors and feeding management factors.

However, the market visit found that there are three main factors causing the increase of livestock and poultry diarrhea rate this year. In addition to the above alternative grain raw materials, there are also the use of additives and biosafety problems.

Feed raw materials: the extensive use of alternative grain raw materials leads to the increase of chyme viscosity and the risk of intestinal inflammation.

Corn prices have remained high this year, and wheat, barley, brown rice and other alternative grain raw materials are used in a large proportion in feed formulas. Compared with corn, the content of non starch polysaccharides in alternative grain raw materials such as wheat is much higher than corn. It leads to the increase of chyme viscosity in the intestine, provides a favorable growth environment for harmful bacteria such as Clostridium perfringens at the back of the intestine, leads to intestinal inflammation and diarrhea.

The content of vomiting toxin in wheat, the main substitute, generally exceeded the standard, which was easy to induce necrotizing enteritis. What is more terrible is that after testing, it is found that the content of mycotoxin in many feed raw materials such as corn and wheat seriously exceeds the standard, especially the content of vomiting toxin in wheat generally exceeds the standard, which seriously affects the integrity of intestinal epithelial cells, causes intestinal inflammation and is easy to induce necrotizing enteritis.

Use of additives: reduce feed cost by sacrificing functional additives, resulting in increased intestinal problems.

Since the beginning of this year, the prices of many kinds of livestock have remained depressed and entered a long-term deep loss. Therefore, in order to optimize feed costs and reduce losses, many enterprises use more miscellaneous raw materials, lower nutrient concentration and fewer functional additives, or pay too much attention to the treatment cost and ignore the functionality of the product itself in the selection of functional additives, especially those for improving intestinal health.

For example, in the selection and use of probiotics, probiotic products on the market are uneven, and their functionality is more different. How to evaluate the effect of probiotics is very important.

Only through comprehensive evaluation can excellent probiotic products be screened out and probiotics play a stable and efficient role in the intestine. Probiotics, as one of the core products of feed alternative antibody, should be comprehensively evaluated.

First, the bactericidal effect of probiotics should be evaluated. The inhibition ability of different probiotics to pathogenic bacteria should be clearly compared through laboratory in vitro and animal in vivo tests.