The crude fiber in the feed can be fermented in the cecal, colon and ruminant rumen of the animal to produce a complex protein for energy supply, but its utilization rate is often affected by lignin. Crude fiber is generally considered to be used by ruminants and should not be a major part of the poultry diet. The less fiber in the diet, the greater the potential for feeding fast-growing livestock. In fact, the proper addition of crude fiber to the poultry diet helps maintain the normal structure and function of the gastrointestinal tract of the poultry. Poultry digestion ability of feed fiber The ability of poultry to digest fiber is limited. It is estimated that the time for feed to pass through the digestive tract of poultry is only 4 hours. In small cavities, the chance of microbial action is small. Generally, the digestibility of fiber is 0.9%-42.44%, with an average of 16.02. ±2.23%, the digestibility decreased to 0%-1.4% after removal of the cecum. Adding sand to the diet can increase the crude fiber digestibility by 10%. Poultry demand for feed fiber It is generally believed that the fiber content in the diet should be less than 7%, but increasing the fiber content to 8%-10% in actual production does not have much impact. Feed fiber and poultry production Effect of feed fiber on poultry production performance The degree of poultry feed intake adjustment is related to the characteristics of feed volume or density. High fiber feed has low metabolic energy density, large volume, strong water holding capacity, and rises when exposed to water. When feeding, the amount and frequency of drinking water increase, which is not conducive to poultry raising. Food intake. Studies have shown that adding 10% alfalfa meal, 30% rice husk, 10% cotton kernel cake, 15% rice bran, 10% wheat bran or 5% oat hull to the broiler diet does not affect the growth of broilers. However, wheat bran with 6%, 18%, 10% or 40% cellulose, 40% rice hull, and 5%-10% acid detergent fiber, respectively, reduces broiler growth. The experiment showed that in the diet of the chicks, the fiber levels reached 10%, 11%, 20%, 25%, respectively, and did not affect the growth performance, but the adaptation period of 7 days to 10 days was required. In addition, some trials have shown that when the chicks fed the 10% fiber diet increased their feed intake, they could not maintain their metabolic energy intake. At the same time, the use of 8% pectin or 10% arabinan or xylan or 10% hemicellulose or 30% cellulose in the diet can reduce the growth of the chicken. Add 20% corncob and tapioca slag or 10% cellulose or wheat bran or 10% dehydrated glutinous rice flour or 6% pine sawdust to the diet of laying hens, which does not affect the hen's weight gain and egg production. However, 20% cowpea shell or cassava skin, sawdust, etc. or 15% cellulose all reduce egg production. Meat ducks add 40% cellulose to the full-price diet, and the duck's metabolic energy intake is only reduced by 4%. Adding 5%-15% valerian powder to the turkey diet reduced turkey growth. By feeding experiments on 90 different meat, fiber and fiber levels, it was found that during the period from 0 days to 28 days, the crude fiber content of the diet increased from 5% to 7%, and crude protein from 24 % decreased to 20%, and the metabolic energy decreased from 11.76MJ/kg to 11.37MJ/kg. The weight gain has no effect, but when the metabolic energy drops to 10.93MJ/kg, the weight gain rate of the goose is extremely slow; at 29 days old- During 56 days of age, dietary fiber content increased from 7% to 9%, crude protein decreased from 20% to 18%, and metabolizable energy decreased from 12.24 MJ/kg to 11.83 MJ/kg, which had no effect on weight gain, but crude protein. When the energy is reduced to 16% and the metabolic energy drops to 11.35 MJ/kg, the weight gain rate of the geese is extremely slow. Effect of feed fiber on the utilization of mineral elements in poultry According to experimental research, the true utilization rates of Ca, P, Mn, Zn and Fe in various cakes are negatively correlated with the crude fiber content. Adding 8% cellulose, polyethylene, and sputum cell wall to the chick diet reduced the concentration of liver, tibia, serum Zn and Cu, but did not affect the concentration of Ca, Mg, and Fe; and used 4% or 8% corn, respectively. Bran, oat bran, and wheat bran reduce the concentration of Zn in tissues and organs. Sterile Vials are produced by aluminum caps, non-latex butyl stoppers and SCHOTT Neutral Type I glass vials. They are approved by cGMP and FDA with internally sterile.The production process is carried out under strict Class 100 workshop. Finished vials can meet the FDA`s authorised 14-day sterility test. 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