Feed the impact of fiber on poultry production
Of crude fiber in feed in animal cecum, colon, and rumen by microbial fermentation in the protein complex for making energy, but their use often affected by lignin. Crude fiber is generally considered for use of ruminant animals should not be accounted for in the main part of the diet of poultry, less dietary fiber content, the rapid growth of livestock and poultry feeding, the greater the potential. In fact, due to join in the poultry diet crude fiber, helps to keep the poultry gastrointestinal tract of normal structure and function.
Poultry feed, fiber digestion on Poultry digest fiber capacity is limited, it is estimated that poultry feed through the digestive tract for only about 4 hours, the small size of the cecum, little chance of microorganisms, generally at 0.9% fiber digestibility -42.44% average 16.02 ± 2.23%, after resection of cecal digestibility dropped to 0% -1.4%. Diet plus sand can improve the digestibility of crude fiber 10%.
Poultry feed, fiber requirements of the
Generally considered to be of dietary fiber content of less than 7%, but the fiber content in the actual production will increase 8% -10%, and did not have much impact.
Feed, fiber and poultry production Feed fiber on performance of poultry production
Poultry and feed intake level adjustment features such as the volume or density, high-fiber diet with low concentrations of metabolic energy, large capacity, water holding ability, with water and up, feeding, the water quantity and frequency increase, is not conducive to poultry increased feed intake.
Study showed that broiler diets, respectively, with 10% alfalfa meal, 30% rice hulls, cottonseed cake 10%, 15% rice bran, 10% or 5% wheat bran, oat crust does not affect the growth of broilers. However, adding 6%, respectively, 18%, 10% or 40% cellulose, 40% rice hulls, 5% -10%, acid detergent fiber in wheat bran may reduce the growth of broiler.
Test showed that the diet of Leghorn chickens, fiber levels were 10%, 11%, 20%, 25%, does not affect growth performance, subject to 7 days -10 days of adaptation period. Other tests that Leghorn chicks fed 10% of the fiber in the diet when, despite increased feed intake, but can not maintain their metabolic energy intake constant. Meanwhile, the diet with 8%, respectively, 10% pectin or polysaccharides, or Arab, or 10% of xylan hemicellulose, or 30% of the cellulose can reduce the growth of Leghorn chickens.
Laying hen's diet by adding 20%, respectively, and flour corn cob residue, or 10% cellulose or wheat bran or 10% dehydrated alfalfa meal, or 6% pine sawdust does not affect weight gain and hen egg production, but 20% of the cowpea or cassava skin shell, sawdust, etc., or 15% cellulose were reduced egg production.
Duck in the full price of adding 40% cellulose diet, ducks metabolic energy intake decreased by only 4%. In turkey diets with 5% -15% alfalfa meal, results in reduced growth of turkeys.
Through 90 sub-goose meat with different energy, protein and fiber between the level of feeding trial, found that children age 0 -28 geese during the day, crude fiber content from 5% to 7%, coarse protein from 24% to 20%, metabolism can 11.76MJ / kg reduced 11.37MJ / kg, had no effect on weight gain, but the metabolic energy reduced 10.93MJ / kg, the son of geese weight increase was significantly slower; in 29 During the days -56 days of age, dietary fiber content from 7% to 9%, crude protein from 20% to 18%, metabolism can 12.24MJ / kg reduced 11.83MJ / kg, had no effect on weight gain, but dropped to 16% crude protein, metabolizable energy down 11.35MJ / kg, the son of geese weight increase was significantly slower.
Poultry feed, fiber utilization of mineral elements
According to experimental results indicate that a variety of meal feed Ca, P, Mn, Zn, Fe utilization and the real crude fiber content was negatively correlated. In the chick diet with 8% cellulose, polyethylene, alfalfa cell walls, results in reduced liver, tibia, serum Zn and Cu concentrations, but did not affect Ca, Mg, Fe concentration; use of 4%, respectively, or 8% corn bran, oat bran, wheat bran reduced the Zn concentration in tissues and organs.
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