Yeast cell wall and its preparation method, feed additive and its preparation method and feed

Abstract

The invention relates to a yeast cell wall, comprising 20%-70% by mass of beta-yeast glucan and 20%-70% by mass of mannan oligosaccharide. The invention also relates to a forage additive, comprising the yeast cell wall, sodium modified montmorillonite and selenium yeast, and by mass, a ratio of the yeast cell wall to the sodium modified montmorillonite is 1 : 9-9 : 1; and a ratio of a total of the yeast cell wall and the sodium modified montmorillonite to the selenium yeast is 10 : 1-20 : 1. The invention also relates to a preparation method for the yeast cell wall. The preparation method comprises the steps of breaking the cell wall of live yeast through self-dissolution, degrading the yeast with a compound enzyme, separating, purifying, drying and deactivating the enzyme to obtain the yeast cell wall, wherein the compound enzyme comprises papain, nuclease and bacteria protease, and by mass, the addition amount of the papain, nuclease and bacteria protease is 0.1-0.3%, 0.05-0.2% and 0.01-0.03% that of the dry material of the yeast. The invention also relates to forage, an addition level of the additive in the forage is 1.5-2.5 g / kg.

Description

technical field

[0001] The present invention relates to a yeast cell wall and a preparation method thereof, and a feed additive containing the yeast cell wall and a preparation method thereof, in particular to a feed additive containing yeast cell walls, sodium-modified montmorillonite and yeast selenium and a preparation method thereof; It relates to a feed containing the above-mentioned feed additive. Background technique

[0002] The level of pig production efficiency and economic benefits depends to a large extent on the reproductive efficiency of sows, and the level of reproductive efficiency of sows depends on factors such as genetics, environment, disease, feeding management and nutritional level. In the modern pig industry, the reproductive performance of sows directly affects the efficiency of pig farms. In order to give full play to the maximum production performance of sows, people have taken various measures, but at the same time it has also brought about the pr...

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