Using plant polysaccharide and flavonoid extract to develop feed additive

Introduction: a new way to produce pollution-free feed -- the project of "research and development of compound feed additive of plant polysaccharide and flavonoid extract" jointly completed by the national feed engineering technology research center and Beijing tianfulai Biotechnology Co., Ltd., has recently passed the expert appraisal organized by the Ministry of education of the people's Republic of China The project was set up in 1996 After more than five years of scientific and technological research, it has made great achievements in the identification of plant active substances, screening, directional extraction of effective ingredients, research on the composition of various animals, etc 21 kinds of target plants were selected from 206 kinds of plants According to the molecular structure characteristics of the active substances in these plants, the microwave negative pressure extraction method was initiated at home and abroad to extract the volatile micro components Three kinds of bioactive substances, growth promoting factor, disease resistance factor and cholesterol reducing factor, were extracted by directional extraction such as water extraction, alcohol extraction and vinegar extraction, which changed the direct application method The traditional way of making the plant active ingredients can be quantified and controlled, and solved the problem that the quality of traditional Chinese herbal medicines is affected by factors such as producing areas, planting conditions, processing methods and seasons, resulting in unstable quality and difficulty in determining effective components The optimum parameters of spray drying process were determined by the activity index According to the molecular structure characteristics of three main extracts, including the growth factors, disease resistance factors and cholesterol lowering factors, and the characteristics of different animal needs, animal experiments were carried out by uniform design method, and the optimal combination scheme of various fractions was obtained The products produced by these processes have no toxic side effects, high safety and will not cause drug residues Compared with the traditional Chinese herbal feed additive, it has no scorch, bitterness, peculiar smell, slight sweetness, small particle size, even, and the addition amount can be reduced by at least 10 times It has obvious advantages in daily gain, feed return, survival rate, economic benefits and other aspects of animals, which solves the problems of slow absorption of traditional plant feed additive, reduction of animal intake, too large proportion of addition and too high cost Long term problems A series of animal experiments were carried out in Beijing, Jiangsu, Shanghai and Hebei The results showed that compared with the general antibacterial growth promoting agent, the growth promoting extract could increase the daily gain of Broilers by 10% - 12%, piglets and piglets by 10% - 15%, and significantly improve the anti stress ability of layers, prolong the peak period of egg production, improve the color of egg shell and yolk; the animal lipid regulating extract could significantly reduce the bile fixation in liver and muscle of animals The content of alcohol can be reduced by more than 30%, which can effectively prevent fatty liver of broilers, growing finishing pigs, eels, turtles and other aquatic animals, which is easy to occur due to eating high protein and high fat feed; the growth speed of fish, shrimp, crab and turtle increased by 11.9%, 12%, 20.8% and 6.2% respectively by special growth promoting extract of aquatic animals, which can respectively increase the growth speed of fish, shrimp, crab and turtle The survival rate of C and B crabs increased by 5%, 3.3% and 7.5%, which can effectively inhibit the synthesis of fatty acids and triglycerides in the liver, accelerate the turnover of lipids in aquatic animals, promote blood flow, prevent fat infiltration in the liver, and significantly improve the water quality The results Appraisal Committee believes that the project "research and development of compound feed additive of plant polysaccharide and flavonoid extract" has advanced technology and strong practicability, and its overall technical level has reached the international advanced level The products developed by the project have passed the safety evaluation experiment, and the research results will play an important role in promoting the construction of feed safety engineering and the healthy development of animal husbandry, aquaculture and feed industry in China.