Feed – What energy ingredients cannot be used? – Pig Pig School – China Animal Husbandry Website – A useful animal husbandry website
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When talking to energy, it is always much greater than digestible energy when it comes to energy, and the proportion of different feed digestible energy can be different. It is determined by the part that cannot be digested; then which energy ingredients cannot be digested?
The so-called carbohydrate, is a class of substances, and the elements in the molecule are mainly carbon oxygen hydroxide, and the hydrogen element is twice the oxygen, which is the same as the proportion of hydrotric hydrogen and oxygen. Such materials are called carbohydrates.
The ingredients included in the carbohydrate are too much, such as sugars, cellulose, hemicellulose, etc .; sugar can be directly digested by animals, so the cellulose and half Cellulose, it is difficult to be digested by pigs, which belongs to ingredients that cannot be digested. The ruminant can digest a large amount of cellulose and hemicellulose, not a corresponding digestive enzyme in the gastrointestinal, but a large amount of microorganisms in the gastrointestinal, can break the cellulose and hemicellulose into a ingredient that can be absorbed; It is a small stomach animal, the amount of microorganism is small, and the amount of decomposing cellulose and hemicellulose is small, and the portion that is not digested is generally included.
Sugar is a very large type of substance, subhabited sugar, double sugar, polysaccharide, etc .; monosaccharide is a compound of six carbon atoms and water, such as glucose, fructose, galactose, etc. Combined with two monosaccharides, such as sucrose, lactose, maltose, etc., polysaccharides are composed of multiple monosaccharides, due to different number of carbon atoms, the molecular structure is also very different; we often see the polysaccharides we often have Plant starch, animal sugar dollar, etc.
The sugar is generally digestible, but there is also a starch that is not easily digested, such as resistant starch belongs to this. Resistant starch is very large in new corn, it is not easy to be digested by pigs; so we are using new cornIt is necessary to take into account this factor.
In addition, the feed also contains a large amount of non-carbohydrate, protein, fat, such as lignin, because it cannot be decomposed, the energy contained cannot be utilized, only the body can be discharged in the form of feces; And the crop straw, is a substance containing highlighterin.
Source: Liu pig Author: Liu Dewang
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