1, improving animal sub-health
Modern aquaculture unilaterally pursues "more life, faster growth and higher yield", which restricts the freedom of animals too much. Animal nutrition experts believe that eating enough crude fiber is the welfare and right of animals. Studies show that a certain amount of crude fiber is helpful to improve the health of animals.
2. Provide nutrition for livestock
Cellulose and hemicellulose in crude fiber are hydrolyzed in the digestive tract of ruminants under the action of cellulase produced by cellulolytic bacteria, and some of them become carbon dioxide and methane, which are excreted, and the other part becomes volatile fatty acids, which are digested and absorbed, enter the blood and are used by livestock and poultry.
3. As a filler
Crude fiber absorbs a lot of water, and after entering the gastrointestinal tract, its volume expands and increases, playing a filling role. At the same time, crude fiber stimulates the intestinal mucosa of livestock and poultry, promotes gastrointestinal peristalsis, and is conducive to fecal excretion.
Various functions of crude fiber:
1, physiological function of crude fiber
(1) cation exchange
Dilution or buffering affects the pH of the digestive tract, which is beneficial to the digestion and absorption of food.
(2) hydration
Improve the characteristics of food in the digestive tract and affect the physiological activities of the intestine.
(3) Fermentation ability
Provide a hotbed for microbial fermentation.
(4) Stickiness
Increase the viscosity of food in the intestine.
2. Crude fiber plays an important role in feed application.
(1) Maintain intestinal ecology
Fermentable components in crude fiber can be degraded by bacteria and microorganisms in intestinal tract, maintaining intestinal microecological balance and avoiding digestive tract dysfunction.
(2) Adsorption of harmful substances
The viscosity of crude fiber can adsorb toxins and intestinal metabolites in feed, stimulate intestinal peristalsis, accelerate the excretion of contents and reduce the accumulation of toxins in the body.
(3) reduce fat deposition
It can improve the quality of ketone bodies and reduce fat deposition.
(4) Stimulate intestinal peristalsis
Large fragments and rough surfaces in crude fiber and its decomposition products will stimulate the brain center of animals, regulate intestinal movement and secretion of various enzymes, and accelerate food movement.