Feed additive for promoting growth and intestinal development of livestock and poultry, and preparation method and application of feed additive
A technology for feed additives and intestinal development, applied in the fields of application, animal feed, animal feed, etc., can solve the problems of limited effect and difficulty in completely replacing antibiotic products, so as to increase daily weight gain and reduce ammonia and other spoilage substances The production, the effect of hindering the absorption
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Embodiment 1
[0038] Example 1: A feed additive for promoting the growth and intestinal tract development of livestock and poultry, which is prepared by mixing 100 g of cabbage slurry and 0.2 g of solid Bacillus subtilis.
Embodiment 2
[0039] Example 2: A feed additive for promoting the growth and intestinal tract development of livestock and poultry, which is prepared by mixing 100 g of cabbage slurry and 0.4 g of solid Bacillus subtilis.
Embodiment 3
[0040] Example 3: A feed additive for promoting the growth and intestinal tract development of livestock and poultry, which is prepared by mixing 100 g of cabbage slurry and 0.6 g of solid Bacillus subtilis.
[0041] The preparation method of the feed additive that promotes the growth of livestock and poultry and intestinal tract development described in the above-mentioned embodiments 1-3 is as follows:
[0042] (1) Prepare head cabbage slurry
[0043] Take fresh head cabbage leaves, pulverize them into a slurry, obtain the head cabbage slurry, store it, and set aside;
[0044] (2) Preparation of solid-state Bacillus subtilis
[0045] a. Inclined test tube strain culture: under aseptic conditions, the Bacillus subtilis subsp. subsp. , inoculated, and cultivated at 37°C for 20 hours, wherein the slant test tube medium is beef extract protein medium;
[0046] b. Erlenmeyer flask expansion culture: put 100mL liquid beef extract peptone medium into a 250mL Erlenmeyer flask, ster...
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