How to promote intestinal health of weaned piglets

How to promote intestinal health of weaned piglets date: 2016-08-30 11:34 author: source: inner Mongolia Agriculture and Animal Husbandry Information Network Click: 7

Challenge of weaning piglets

When piglets are weaned, they need to face the complexity of new environment, new diet and mixed groups of different columns. its immature intestinal tract and immune system increase the risk of disease after weaning.

The post-weaning stage can be roughly divided into two periods: acute stage, lasting 5-10 days, during which piglets showed anorexia, constipation, decreased efficiency of nutrient digestion and absorption, intestinal imbalance and injury, and chronic stage, lasting for 5 days. during this period, feed intake increased, nutrient digestion and absorption efficiency increased, fermentation capacity increased, gastrointestinal microbiota established and recovered, functional activities resumed.

2. How to measure dietary fiber

The following substances can be used to regulate the gastrointestinal microbiota of piglets:

Acidifiers, probiotics, probiotics, plant extracts, minerals such as zinc oxide and copper, dietary fiber, low-protein diets and functional amino acids.

The following substances can be used to promote the feeding and growth of piglets:

Flavor agents, synthetic amino acids, raw materials to promote digestion, etc.

Among the above substances, dietary fiber is often considered and analyzed. For the functional fiber in the diet of weaned piglets, we often investigate its function from the aspects of viscosity, fermentability, hydraulic capacity, bacterial binding ability and physical effect, and measure whether it has a positive effect or not.

The efficacy of dietary fiber

Dietary fiber can play a variety of positive roles:

Dietary fiber is divided into soluble and insoluble, soluble fiber can slow down gastric emptying, close to hindgut fermentation, but also increase cell viscosity; insoluble fiber can improve digestive function, regulate gastrointestinal microbial area and enhance microbial fermentation. but it will also reduce the digestibility of nutrients, which is disadvantageous to animal production.

It was found that adding 8% wheat bran to the diet could significantly increase the feed intake and daily gain of piglets within 0-10 days after weaning, and promote the formation of butyric acid in colonic chyme after weaning. The addition of insoluble fiber to the diet within 10 days after weaning could regulate the properties of gastrointestinal surimi and enhance the fermentation ability of piglets. After the diet was diluted with insoluble non-starch polysaccharides in the first two weeks after weaning, the number of Escherichia coli decreased, the activity of brush margin increased and stomach weight increased, which meant that piglets absorbed weaning diet better.

For weaned piglets, the selection of fiber raw materials from the perspective of functional characteristics is far more important than that from the perspective of chemical composition; the gastrointestinal tract of piglets is immature, the addition of insoluble fiber can help their development and promote intestinal health.

With regard to the fact that the addition of insoluble fiber to the diet can promote the development of gastrointestinal tract of piglets, the positive factors are likely to be related to the fiber particle size and the ability to absorb pathogenic bacteria such as Escherichia coli. The addition of fiber to the high-protein diet after weaning helps to avoid the adverse effects of protein fermentation.

Low-protein diet and functional amino acids

The main sources of dietary protein for piglets are as follows: potato protein, fish meal, amino acid, soybean meal, corn protein.

Dietary protein levels and types of piglets need to be determined according to the health status of pig farms. For pig farms in poor health, or early weaned piglets, the ratio of meat to feed is not the primary indicator, the diet formula should be low in protein, and add some functional amino acids, such as tryptophan, cysteine, methionine, threonine. For pig farms in good health, the ratio of feed to meat is an important index, and the diet should take ensuring the fastest growth of piglets as the primary index. In pig farms with good hygiene, the effect will be very good when high levels of lysine are added to the diet.