Combination of Acidifier and Xylo-oligosaccharide Improves Growth of Weaned Piglets

The growth and development of piglets at the time of weaning is not perfect, and the weaning stress caused by changes in the environment, feed, etc. causes pigs to have symptoms such as growth retardation, low immunity, diarrhea, or edema. Many farmers have added acidifiers to feeds to improve the pig's stress and have achieved better results.
Reduce the pH value in the digestive tract, activate pepsin, improve the digestibility of the protein; pH value can also effectively control the proliferation of pathogenic microorganisms in the digestive tract.

Slowing the speed of gastric emptying and increasing the digestibility of diets; stimulating oral bud cells of animals, promoting the secretion of saliva, thereby increasing appetite and feed intake; and cooperating with high-copper, probiotics, etc. to alleviate the harm caused by stress to the pigs, and improve the children. Pig immunity and production performance.

However, the acidifying agent also has the following problems during use:

1. There are many kinds of acidifying agents and the amount of acidifying agent is not good. The effect is not very stable, and the type of the diet, the age and weight of the pig, and the feeding environment will also affect its use effect.

2. The acidifying agent is absorbed in the stomach and it is weakened in the small intestine.

3, acidifying agent is corrosive, inconvenient for transportation and storage.

4. Prebiotics are green feed additives that can improve the stress of weaned pigs. At present, there are a lot of feed manufacturers to compound acidifiers and prebiotics, so as to improve the stress of the pigs and improve the performance of the pigs. The most used is xylo-oligosaccharides.

Xylo-oligosaccharides are oligosaccharides with a degree of polymerization of 2 to 7 that are linked by xylose molecules with β-1,4 glycosidic bonds. Compared to other prebiotics, xylo-oligosaccharides have four major properties:

1. Highly selective proliferation of bifidobacterium, the effect is nearly 20 times that of other polymeric sugars. Xylo-oligosaccharides reach the intestine and proliferates endogenous bifidobacteria and can effectively inhibit the proliferation of other harmful bacteria and reduce endogenous toxins. The production.

2. It is not digested and decomposed by the enzyme system in the animal body. It can reach the intestine, regulates and maintains the balance of the intestinal flora, and metabolizes nutrients beneficial to the body, improving the body's production performance and immunity.

3, acid heat stability is good, in the acidic condition of pH 2.3 ~ 8 heated to 100 °C basically does not decompose, easy compatibility, processing, transportation and storage.

4. The intake is the least, and its effective dosage is 1/20 of isomaltose and 1/7 to 1/10 of fructooligosaccharide.

The compounding of acidulants and xylo-oligosaccharides can improve the performance of weaned pigs more than single use. Acidifiers directly and rapidly reduce the pH of the large intestine, create a good growth environment for beneficial bacteria, and inhibit the growth of harmful bacteria; while xylo-oligosaccharides inhibit the growth of harmful bacteria by directly proliferating beneficial bacteria and then producing acid. The combination of the two just happens to proliferate beneficial bacteria and regulate intestinal pH synchronization, which is beneficial to better improve the intestinal environment.

According to research data, the combination of xylo-oligosaccharides and acidifying agents can promote the proliferation of mucosal cells, increase the villus height of the intestinal mucosa and reduce the depth of crypts, thereby promoting the digestibility of nutrients and increasing the daily gain and growth of the piglets. performance. Chen Daiwen et al.'s research also showed that acidifiers and oligosaccharides have significant interaction effects on feed utilization, and the combination of them can improve growth performance and nutrient digestibility of weaned pigs.

The positive significance of acidifying agent and Xylo-oligosaccharide compounding in pig rearing has been confirmed through a great deal of practice. With the introduction and application of new products, it will gradually be recognized by the majority of feed manufacturers and farmers, and will surely become A current trend of feed additives.