Feed additive for improving intestinal health of weaned piglets, and preparation and application thereof
A technology for feed additives and weaned piglets, applied in application, animal feed, additional food elements, etc., can solve problems such as enhancement, drug residue resistance, and intestinal flora imbalance of weaned piglets, so as to promote growth, absorption and transformation , enhance the immune function of the body
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Embodiment 1-4
[0033] 1.1 Experimental design
[0034] In this experiment, a single factor design was adopted, and 150 28-day-old Du Sanyuan pigs with similar body weight and consistent health status were selected and randomly divided into 5 groups, with 3 replicates in each group and 10 pigs in each replicate. The control group was fed with basal rations (see Table 1-1, Table 1-2), and the basal rations were fed with reference to the nutritional requirements of NRC (2012) pigs in the United States. Embodiment 1-4 groups were fed with basal rations+different formula feed additives respectively (See Table 2), the test period was 28 days, and food and water were ad libitum during the test.
[0035] 1.2 Measuring indicators
[0036] 1.2.1 Production performance
[0037] The test pigs were weighed at the beginning and end of the test, and the average daily gain was calculated; at the start and end of the test, the feed consumption of the test pigs was settled with each repetition as a unit, an...
Embodiment 5
[0067] A feed additive for improving intestinal health of weaned piglets. The feed additive comprises the following components and contents in parts by weight: 40 parts of lactobacillus, 40 parts of tributyrin and 10 parts of β-mannanase.
[0068] Among them, lactobacillus is fermented by lactic acid bacteria in a culture solution with a pH value of 6.5, and the enzyme activity of β-mannanase is 35000U / g.
[0069] The preparation method of the feed additive comprises the following steps:
[0070] 1) Pass lactobacillus, tributyrin and β-mannanase through 80-mesh sieve respectively;
[0071] 2) Mix lactobacillus, tributyrin and β-mannanase evenly to obtain the feed additive.
[0072] Among them, the preparation method of lactobacillus is as follows: under anaerobic conditions, add lactic acid bacteria into the culture solution with a pH value of 7 to ferment for 36 hours, and then undergo ammonium sulfate precipitation, dialysis, and concentration to obtain lactobacillus.
[0...
Embodiment 6
[0075] A feed additive for improving intestinal health of weaned piglets. The feed additive comprises the following components and contents in parts by weight: 60 parts of lactobacillus, 20 parts of tributyrin and 25 parts of β-mannanase.
[0076] Among them, lactobacillus is fermented by lactic acid bacteria in a culture solution with a pH value of 7, and the enzyme activity of β-mannanase is 45000U / g.
[0077] The preparation method of the feed additive comprises the following steps:
[0078] 1) Pass lactobacillus, tributyrin and β-mannanase through 80-mesh sieve respectively;
[0079] 2) Mix lactobacillus, tributyrin and β-mannanase evenly to obtain the feed additive.
[0080] Among them, the preparation method of lactobacillus is as follows: under anaerobic conditions, add lactic acid bacteria into the culture solution with a pH value of 6.5 to ferment for 60 hours, and then undergo ammonium sulfate precipitation, dialysis, and concentration to obtain lactobacillus.
[0...
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