Bifidobacterium bifidum and application thereof

Abstract

The invention discloses bifidobacterium bifidum and application thereof. A preservation number of the bifidobacterium bifidum B-176 is CGMCC (China General Microbiological Culture Collection Center) No.15754, the preservation date is May 14, 2018, and the preservation institution is CGMCC. A formula of a culture medium of the bifidobacterium bifidum B-176 is characterized in that the culture medium is prepared from 1.2 to 2 percent of tryptone, 0.8 to 1.5 percent of soybean peptone, 0.8 to 1.6 percent of casein peptone, 0.5 to 1 percent of yeast extract powder, 1.0 to 1.5 percent of beef extract, 1.5 to 2 percent of glucose 6-phosphate, 1 to 2 percent of lactose and 4 to 4.5 percent of inorganic salt solution. The bifidobacterium bifidum B-176 disclosed by the invention has tolerance on gastric acid and cholate and has a better inhibition function on Escherichia coli; an experiment verifies that a strain has a better synergistic growth function with other types of lactobacillus, and anapplication range of the bifidobacterium bifidum B-176 is enlarged by the discovery. The invention also discloses the application of a lactobacillus composition containing the bifidobacterium bifidumB-176 in feed for fattening pigs. The lactobacillus composition can be added in original basic ration of the growing and fattening pigs for feeding, so that the utilization rate of the feed can be increased, the death rate can be reduced, and the slaughtering days can be reduced.

Description

technical field [0001] The invention relates to the field of microorganisms, in particular to a bifidobacterium bifidum and its application. Background technique [0002] Due to the rise of microecology and the progress of the medical revolution in the past two decades, the importance of bifidobacteria research has been increasingly recognized. Bifidobacteria play an important role in maintaining the intestinal microecological balance, inhibiting the invasion and colonization of pathogenic bacteria, regulating the body's immunity, and lowering cholesterol levels. its important research significance. However, Bifidobacterium bifidum has extremely high requirements on the culture environment, so how to improve its culture environment has become a crucial issue. [0003] The known Lactobacillus (Lactobacillus spp.) is a group of microorganisms that live in the body and are beneficial to the health of the host. Its role in maintaining human health and regulating immune functio...

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Problems solved by technology

However, the frequent use of antibiotics causes changes in the digestive tract environment of humans or animals, poor self

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