Tannic acid type feed formula for sheep and digestion and metabolism determination method thereof

Abstract

The invention relates to the technical field of animal feed and in particular relates to a tannic acid type feed formula for sheep and a digestion and metabolism determination method thereof. Tannic acid type feed is prepared from basic feed and tannic acid, wherein the tannic acid is added into the basic feed; the adding amount of the tannic acid is 0.1g.kg<-1> to 20g.kg<-1>; the basic feed is prepared from the following ingredients in parts by weight: 35 to 40 parts of corn, 5 to 10 parts of soybean meal, 10 to 15 parts of alfalfa hay, 25 to 30 parts of corn straw, 15 to 20 parts of barley straw, 0.1 to 0.2 part of calcium hydrogen phosphate, 0.3 to 0.4 part of limestone powder, 0.5 to 1 part of table salt and 0.1 to 0.2 part of premix. After the tannic acid is added, a tannic acid protein compound is formed; the tannic acid protein compound is decomposed through pepsin and trypsin when the feed stays in a rennet stomach (with the pH (Potential of Hydrogen) of 2.5) and a small intestine (with the pH (Potential of Hydrogen) of 8 to 9), so as to form small molecular substances which are easy to absorb, and furthermore, the effect of protecting rumen bypass protein is realized. The content of the protein in milk products can be improved, so that the tannic acid can be used for improving the digestion and absorption of the feed protein in the dairy cow. A research shows that the protection effect on the feed protein is the best when the content of the tannic acid in the feed is 3.40g.kg<-1>.

Description

technical field [0001] The invention relates to the technical field of animal feed, in particular to a sheep tannin-type feed formula and a method for measuring its digestion and metabolism. Background technique [0002] Tannic acid, also known as tannic acid, is a polyphenolic compound that exists in plant tissues such as persimmons, tea leaves, coffee, pomegranates, and sorghum grains. It forms water-soluble tannins when the plants are immature. The maturity of the seeds turns from water-soluble to coagulation. The structure of tannic acid is very complex and belongs to polyhydric phenolic compounds. The astringent taste in food and feed is usually related to tannic acid. Moreover, tannic acid can combine with protein, alkaloid, pectin, etc. to form precipitates, so it has been considered as an anti-nutritional factor in feed. However, due to the special physiological structure and digestive characteristics of ruminants, an appropriate amount of tannic acid in the diet ...

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Problems solved by technology

[0003] However, the content of tannic acid in plant tissues such as persimmon, tea, coffee, pomegranate, and sorghum grains is limited, and it is impossible to feed ruminants in batches through the intake of tannic acid only through plant tissues. , pomegranate, sorghum grains and other plant tissues are likely to cause nutritional imbalance, and there is no relevant report on feeding tannic acid in batches in the prior art

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