Microbacterium PT3 with protein degradation function and application thereof

Abstract

The invention discloses a microbacterium PT3 with a protein degradation function and application thereof. The preservation number of the microbacterium PT3 is GDMCC No: 60923. The microbacterium PT3 is separated from the intestinal tract of a prawn, and the proving result shows that the microbacterium PT3 can secrete protease extracellular, hydrolyze protein in a living environment, assist the microbacterium PT3 in utilizing the protein after being planted in the intestinal tract of an aquaculture animal, decompose the remaining protein in residual bait, synthesize the mycoprotein of the microbacterium PT3 for the aquaculture animal to use, and plant the microbacterium PT3 in the intestinal tract again to form a benign cycle and improve the feed protein utilization path. The microbacteriumand artemia survival experiments show that the strain does not generate stress or toxic effects on the aquaculture animal when the concentration is high; the strain is wide in tolerance, the salinityhas small influence on the growth of the bacterium, and the strain is very suitable for aquaculture and can efficiently play a role; and the microbacterium PT3 is of great significance in the marineaquaculture industry, can serve as a good strain of a novel microecological preparation and has good application prospects.

Description

technical field [0001] The invention relates to the technical field of microbes, in particular to a microbacterium PT3 with protein degradation function and its application. Background technique [0002] With the development of the economy and the improvement of people's material living standards, the demand for aquatic products is increasing day by day. At present, my country is one of the important aquatic product production and export countries in the world. From January to November 2018 alone, the national aquatic product output has reached 53.7555 million tons. In order to increase the weight gain of farmed animals between units, the protein content in aquatic feed is always maintained at a high level, while the utilization rate of protein in feed for farmed animals is generally low, and the bait fed is only 25% feed protein It is absorbed and utilized by farmed animals, and the remaining 75% exists in the remaining bait or is discharged into the cultured water body w...

AI Technical Summary

Problems solved by technology

[0003] Researchers have improved the palatability of aquatic feed, added appropriate attractants, and adjusted the balance of amino acids in feed to increase the feed intake of farmed animals. However, in order to keep costs down, most of the protein in domestic feed is plant protein. , Aquaculture animals have low digestibility of these plant proteins, which cannot be completely decomposed and transformed by the digestive enzymes of aquatic animals, which is also the main limiting factor for the low utilization rate of feed protein

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