Porcine heat stress resistance selenium-rich composite bacteria feed additive and application thereof

A technology of feed additives and compound bacteria, applied in application, animal feed, animal feed, etc., to achieve the effect of improving antioxidant capacity and immune function, alleviating adverse effects, and reducing levels

Active Publication Date: 2012-12-19
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the effects of probiotics, especially compound probiotics, on the heat stress of pigs. As for the application of compound probiotics rich in organic selenium to relieve heat stress in pigs, there are no reports at home and abroad.

Method used

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  • Porcine heat stress resistance selenium-rich composite bacteria feed additive and application thereof
  • Porcine heat stress resistance selenium-rich composite bacteria feed additive and application thereof
  • Porcine heat stress resistance selenium-rich composite bacteria feed additive and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1 took 48 28-day-old weaned piglets from a pig farm in Xinghua, Jiangsu as the implementation object

[0051] 1. Production of selenium-enriched compound bacteria feed additives

[0052] (1) Bacteria:

[0053] Lactobacillus acidophilus (Lactobacillus acidophilus): purchased from the General Microbiology Center of the Chinese Microbial Culture Collection Management Committee, Institute of Microbiology, Chinese Academy of Sciences, referred to as CGMCC, and the strain code is 1.1878;

[0054] Streptococcus thermophilus: purchased from the General Microbiology Center of the Chinese Microbial Culture Collection Management Committee, Institute of Microbiology, Chinese Academy of Sciences, referred to as CGMCC, and the strain code is 1.2471;

[0055] Saccharomyces cerevisiae (Saccharomyces cerevisiae): purchased from the General Microbiology Center of the Chinese Microbial Culture Collection Management Committee, Institute of Microbiology, Chinese Academy of Sciences, referred ...

Embodiment 2

[0126] Example 2 Take 48 80-day-old fattening pigs from a pig farm in Xinghua, Jiangsu as the implementation object

[0127] 1. Production of selenium-enriched compound bacteria feed additives

[0128] (1) Bacteria:

[0129] Lactobacillus acidophilus (Lactobacillus acidophilus): purchased from the General Microbiology Center of the Chinese Microbial Culture Collection Management Committee, Institute of Microbiology, Chinese Academy of Sciences, referred to as CGMCC, and the strain code is 1.1878;

[0130] Streptococcus thermophilus: purchased from the General Microbiology Center of the Chinese Microbial Culture Collection Management Committee, Institute of Microbiology, Chinese Academy of Sciences, referred to as CGMCC, and the strain code is 1.2471;

[0131] Saccharomyces cerevisiae (Saccharomyces cerevisiae): purchased from the General Microbiology Center of the Chinese Microbial Culture Collection Management Committee, Institute of Microbiology, Chinese Academy of Sciences, referred ...

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Abstract

The invention belongs to the field of application of feed additive, and relates to a porcine heat stress resistance selenium-rich composite bacteria feed additive and application thereof. Saccharomyces cerevisiae, lactobacillus acidophilus and streptococcus thermophilus are selected as strains, inoculated in a proper fermentation broth containing sodium selenite, transformation of selenium and probiotics growth accelerating agent in a volume ratio of 1:2:2, and fermented for 30 to 40 hours at a temperature of between 20 and 40 DEG C, throughput of 0.05m<3>/h, revolution of 70r/min and tank pressure of 0.04Mpa; and the selenium enriched composite bacteria preparation can be prepared through proper subsequent treatment. The daily gain and feed-weight ratio of a pig can be remarkably improved in a high-temperature environment by feeding the preparation, the oxidation resistance and immunity functions can be enhanced, the mRNA (messenger ribonucleic acid) level of heat shock proteins Hsp70 and Hsp27 can be reduced, and the effect of porcine heat stress resistance can be effectively played.

Description

Technical field [0001] The invention belongs to the application field of feed additives, and relates to a selenium-enriched composite bacteria feed additive for resisting pig heat stress and its application. technical background [0002] Most areas in southern my country have high summer and early autumn temperatures and high humidity, and the central and northern regions have also had high summer temperatures in recent years. In addition, there are no fully enclosed pig houses with temperature and humidity control as in developed countries, so the heat stress problem of pigs It is getting more and more serious, especially for pigs under intensive and high-density rearing. Foreign scholars reported that when 18-28 kg piglets are at an ambient temperature of 35°C, their body temperature can be 1.4°C higher than the normal body temperature. Pigs exposed to high temperatures for a long time will have excessive heat accumulation in the body and cannot be released. The neuroendocrine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16
Inventor 黄克和甘芳陈兴祥任飞吕晨辉赵如茜潘翠玲周红叶耿坪石秀丽
Owner NANJING AGRICULTURAL UNIVERSITY
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