In order to improve the utilization of animal feed, improve the animal's product quality, reduce the animal's excretion pollution, researchers and breeders add small or trace substances in the process of feed processing, production and use. This kind of substance is called additive. But feed additives include both nutritional and non-nutritive additives. Let's take a look at their definitions, classifications and functions.
Overview, function and application of nutritional and non-nutritive additives
First, the definition, classification and role of nutritional additives
1. Define
Nutritional additives are small or trace amounts of substances that are incorporated into the feed to supplement the nutrients of the feed. Including feed grade amino acids, vitamins, mineral trace elements, enzyme preparations, non-protein nitrogen, etc.
2 classification
2.1 Amino acid additives: used in feed to balance or supplement the nutrient substances required for a specific production purpose. There are mainly lysine additives, methionine additives, arginine additives, tryptophan additives and threonine additives.
2.2 Vitamin Additives: refers to nutritive substances that are insufficient in vitamin supplements in feed.
2.3 Trace element additives: refers to the nutritive substances in the natural feed supplemented with trace elements, which are classified into inorganic trace element additives, organic trace element additives and trace element amino acid chelate compounds, while inorganic trace element additives include sulfates and carbonates. Salt, oxides, chlorides, etc.;
2.4 calcium hydrogen phosphate additive:
2.5 Non-protein nitrogen: refers to nitrogenous compounds other than proteins, peptides and amino acids. The NPN used in feed is generally a simple compound. The compounds used as ruminant feed additives are: urea, ammonium sulfate, ammonium phosphate, urea phosphate, Biuret and isobutylene diurea. Urea is most commonly used for effectiveness and economic feasibility analysis.
Overview, function and application of nutritional and non-nutritive additives
3 role
The main function of nutritional supplements is to balance the nutrition of livestock and poultry diets, supplement the shortage of natural feeds, improve the quality of products, and maintain the growth and development of cells in various tissues of livestock and poultry.
Second, the definition, classification and role of nutritional additives
1. Define
Non-nutritive additives are real additives and are not inherent nutrients in the feed.
2, classification
There are many types of non-nutritive feed additives, and the common point is to improve the utilization of feed according to their own advantages. According to their role, they can be roughly classified into four categories: growth promoters; insect repellent health supplements; bioactive agents, Chinese herbal medicine feed additives, feed preservatives; and other additives.
2.1 Growth promoter: stimulate the growth of livestock, improve the health of livestock, improve feed utilization, increase production capacity, and save on the cost of feed. Including antibiotics, antibacterial drugs, hormones, enzyme preparations, etc.
2.2 Deworming health care agents: It is an important feed additive. There are two main types: one is anticoccidial and the other is anthelmintic.
2.3 Bioactive agents: including enzyme preparations, oligosaccharides, yeast and yeast cultures.
2.4 Chinese herbal medicine feed additives: including garlic, Ai powder pine needle powder, Glauber's salt, Codonopsis pilosula, Maifan stone, wild hawthorn, orange peel powder, å‰Œäº”åŠ , Atractylodes, Motherwort and so on.
2.5 Feed Preservative: Refers to antioxidants and mildew inhibitors. Since the granules are pulverized, the protective effect of the seed coat is lost, and the exposed contents are highly susceptible to oxidation and mold contamination. Therefore, antioxidants and antifungal agents have always been valued by feed manufacturers.
2.6 Other additives: mainly acidifiers, colorants, flavoring agents, binders, emulsifiers, etc.
3, the role of
Non-nutritive additives have no nutritional effects on animals, but they can promote animal growth, increase feed remuneration, reduce feed costs, and obtain greater economic benefits by controlling diseases, reducing feed loss during feed storage, and promoting digestion and absorption of animals. The purpose is essential in modern animal husbandry.
Third, how to scientifically and rationally apply
1, pay attention to the use of objects, pay attention to biological potency
2, the correct selection of products, determine the appropriate amount of added
3, pay attention to physical and chemical properties, prevent compatibility 颉颃
4, pay attention to the proportion of cooperation, improve the effective utilization rate
5. Strengthen technical management and adopt scientific production technology
6, pay attention to storage and transportation conditions, timely use of products
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