Three kinds of common health feed for laying ducks

The commonly used health feed for laying ducks includes growth promoters (such as antibiotics, synthetic antimicrobials and enzyme preparations, etc.), deworming health agents (such as anti-coccidial drugs) and so on. Although it is not an inherent nutritional ingredient in feed, it has no nutritional value, but it has the functions of bacteriostasis, disease resistance, maintaining body health, improving palatability, promoting growth, increasing feed reward and so on.

? Chinese herbal medicine feed additive

As a feed additive, Chinese herbal medicine has little side effects, is not easy to remain in the product, and has a variety of nutrients and bioactive substances, as well as nutrition and disease prevention. With the characteristics of natural, multi-function and nutrition, it can enhance immunity, hormone-like, vitamin-like, anti-stress, anti-microbial and other functions, and has a broad application prospect.

? Feed enzyme additive

Enzymes are not only proteins with special functions synthesized by animals and plants, but also catalysts to promote the digestion of proteins, fats and carbohydrates, and participate in biochemical reactions in various metabolic processes in the body. Adding enzyme preparation to duck feed can improve the digestibility of nutrients.

The commonly used feed enzyme additives are single enzyme preparation and compound enzyme preparation. Single enzyme preparations, such as α-amylase, β-glucanase, lipase, cellulase and phytase, etc.; compound enzyme preparations are composed of one or more single enzyme preparations, plus other single enzyme preparations, or obtained by fermentation of one or more microorganisms. Compound enzyme preparation can degrade a variety of substrates (a variety of anti-nutritional factors and nutrients) in feed at the same time, which can maximize the nutritional value of feed. Feed enzyme preparation products at home and abroad are mainly compound enzyme preparation, such as feed compound enzyme mainly composed of protease and amylase.

The enzyme preparation is mainly used to supplement the deficiency of animal endogenous enzymes, and the feed compound enzyme preparation mainly composed of glucanase is mainly used in the feed based on barley and oats. The main function of feed compound enzyme, which is mainly cellulase and Pectinase, is to destroy plant cell wall, release nutrients in cells, be easily acted by digestive enzymes, promote digestion and absorption, and eliminate anti-nutritional factors in feed. promote digestion and absorption of animals The feed compound enzymes mainly composed of cellulase, protease, amylase, Glucoamylase, glucanase and Pectinase can synthesize the joint action of the above enzymes and have a stronger effect on digestion. The amount of enzyme preparation depends on the size of enzyme activity, different enzyme preparation, its activity is different, and the effect of supplementing enzyme preparation is related to the age of animals.

Because the major mineral nutrient element most lacking in modern aquaculture and feed industry is phosphorus, but 70% of the phosphorus in the seeds of crops such as soybean meal, cottonseed meal, rapeseed meal, corn and wheat bran is phytic acid phosphorus, which can not be used by ducks and excreted in feces for nothing. This not only wastes resources and pollutes the environment, but also phytic acid exists as anti-nutritional factors in animal digestive tract, which will affect calcium, magnesium, potassium, iron and other cations and protein, starch, fat, vitamin absorption. Phytase can hydrolyze phytic acid (inositol hexaphosphate) and release available phosphorus that can be absorbed, which not only eliminates anti-nutritional factors, increases available phosphorus, but also improves the absorption and utilization of other antagonized nutrients.

? Microecological preparation

Microecological preparation, also known as beneficial bacterial preparation or probiotics, is a live bacterial preparation which is specially used for animal nutrition and health care after manual screening and cultivation of beneficial microorganisms in animals, and then industrial production by modern bioengineering. It contains more than a dozen kinds of beneficial bacteria in the gastrointestinal tract of livestock and poultry, such as Kato, effective microorganisms (EM), probiotics and so on, as well as single bacterial preparations, such as lactic acid bacteria. However, in the aquaculture industry, except for some special needs, compound preparations of a variety of bacteria are used. In addition to feeding with feed additives and drinking agents, it can also be used to ferment straw and duck manure into biological fermented feed, which can not only improve the digestion and absorption rate of roughage, but also turn waste into treasure and reduce pollution. After entering the digestive tract, microecological agents first establish and restore the dominant flora and microecological balance in the digestive tract, and produce some digestive bacteria, antibiotic-like substances and bioactive substances, so as to improve the digestion and absorption rate of feed and reduce feed cost. inhibit E. coli and other harmful bacteria infection, enhance the body's disease resistance and immunity, can use less or no antibiotics Significantly improve the feeding environment, so that the duck house ammonia, hydrogen sulfide and other odor gases reduced by more than 70%.