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Method For Using A Bacillus Subtilis Strain To Enhance Animal Health

a technology of bacillus subtilis and enhancing animal health, which is applied in the field of probiotics, can solve the problems that not all strains of bacillus subtilis are effective feed additives, and achieve the effect of enhancing animal health

Inactive Publication Date: 2010-04-15
BAYER CROPSCI LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]The present invention provides a strain of Bacillus subtilis that, when administered to an animal, enhances the health of such animal. Specifically, the present invention relates to methods for enhancing the health of non-insect and non-human animals or for improving the general physical condition of such animals by feeding to such animals, in feed or drinking water (and not through gavage), compositions comprising (i) Bacillus subtilis QST 713, (ii) a mutant of (i), a cell-free preparation of (i) or (ii), or a metabolite of (i) or (ii). In one embodiment, the composition of the present invention comprises Bacillus subtilis 713 or mutants thereof and metabolites produced by the bacteria. In another embodiment, the composition comprises Bacillus subtilis QST713 mainly in its spore form.
[0006]The methods of the present invention may be used to increase weight gain of an animal, to increase feed utilization efficiency, to reduce morbidity, to increase disease resistance, to increase survival rates, to increase the immune response of the animal and to maintain healthy gut microflora. In one embodiment the methods of this invention are used to assist with re-establishing a healthy balance of gut microflora after administration of a course of antibiotics for therapeutic purposes.
[0008]In another embodiment, the compositions of the present invention are administered or fed to an animal in an amount effective to decrease the growth of pathogenic bacteria in the animal gut. Such pathogenic bacteria include Clostridia, Listeria, Salmonella, Campylobacter, Escherichia coli, and Vibrio. Relatedly, the methods of the present invention may be used to decrease the amount of pathogenic bacteria shed in animal feces. The methods of the present invention may also be used to maintain or increase the growth of beneficial bacteria, such as lactic acid bacteria, in the animal gut. By decreasing pathogenic bacteria and / or increasing or maintaining beneficial bacteria, the compositions of the present invention are able to maintain an overall healthy gut microflora.
[0012]The present invention also encompasses a method for preparing animal feed containing a direct fed microbial comprising adding Bacillus subtilis QST713 spores in an amount effective to enhance animal health upon feeding to animals to standard feed components, such as carbohydrates and proteins, prior to the pelleting process.

Problems solved by technology

Although various commercial products contain strains of Bacillus subtilis, Bacillus licheniformis, and Bacillus coagulans, such screening reveals that not all Bacillus strains are effective feed additives.

Method used

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  • Method For Using A Bacillus Subtilis Strain To Enhance Animal Health
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  • Method For Using A Bacillus Subtilis Strain To Enhance Animal Health

Examples

Experimental program
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Effect test

example 1

In Vitro Studies of Efficacy of QST713 Cell-Free Preparations Against Animal

Pathogens

[0054]Cell-free preparations of QST713 were tested for antimicrobial activity against Clostridia (Clostridia perfringens ATCC 13124 and two environmental isolates of Clostridia perfringens); Listeria (Listeria moncytogenes ATCC 19116 and 19111, Listeria seeligeri ATCC 35968 and Listeria welshimeri ATCC 35897); Salmonella (Salmonella enterica ATCC 10398, Salmonella arizonae ATCC 13314 and Salmonella bongori ATCC 43975); and E. coli, using Kirby-Bauer and minimal inhibitory concentration (MIC) techniques.

[0055]Cell-free preparations were prepared by growing QST713 in media corresponding to media in which the target pathogen was grown, as shown in Table 1, below, centrifuging the culture for 15 minutes at 3000 rpm at 23 C and filtering it through a 0.45 μm Nalgene filter unit. To test for heat stability, a portion of the cell-free preparation was heated to 50° C. for one hour before each of the Kirby-B...

example 2

In Vitro Studies of Efficacy of QST713 Against Various Bacteria

[0058]A powder formulation of Bacillus subtilis QST713 was tested for efficacy against various environmental isolates of the following bacteria: Clostridium perfringens, Escherichia coli, Samonella enteritidis, Campylobacter jejuni, and Listeria monocytogenes. This powder formulation was prepared by fermenting Bacillus subtilis QST713, concentrating the fermentation broth, and drying, as described above in the Detailed Description of Invention. It had 14.6% concentrated, dried broth and 85.4% formulation inerts (chosen from the possibilities described above) and contained at a minimum approximately 7.3×109 CFU Bacillus subtilis / gram and at a maximum approximately 1×1010 CFU Bacillus subtilis / gram. This formulation shall be referred to herein as Composition 1. Stock solutions of Composition 1 were prepared by adding 0.2 gram of the formulated powder to 1.8 ml of sterile distilled water, such that the solution contained ro...

example 3

In Vivo Studies of QST713 in Broilers

[0059]Composition 1 was added to starter and finisher diets of broiler chickens and weight gain and feed efficiency observed. 252 Jumbo Cornish Cross broiler chicks were randomly separated into four groups and fed one of the diets listed below.[0060]Basal diet only—control[0061]Basal diet +0.05% CALSPORIN® (0.5 g / kg; 106 CFU / g) (designated as CS in the table below)[0062]Basal diet +0.05% Composition 1 (0.5 g / kg; 106 CFU / g) (designated as Comp. 1-106 in the table below)[0063]Basal diet +0.0005% Composition 1 (0.5 mg / kg; 103 CFU / g) (designated as Comp. 1-103 in the table below)

[0064]The basal diet consisted of the following starter diet for days 1-22 and the following finisher diet for days 22-42.

TABLE 4Ingredient composition of starter (d 1 to 21) and finisher(d 22 to 42) basal diets for broiler chickensIngredient, %StarterFinisherCorn45.649.2Soybean meal (48% CP)23.516.8Distillers dried grains5.05.0Corn gluten meal2.04.0Fish meal1.02.5Alfalfa mea...

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Abstract

The present invention relates to a method for enhancing the health of an animal comprising administering to the animal a composition comprising Bacillus subtilis QST 713 or a mutant thereof.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This present application claims priority to U.S. Provisional Application No. 61 / 192,436, filed Sep. 17, 2008, in accordance with 35 U.S.C. Section 119(e). The foregoing application is hereby incorporated by reference in its entirety.FIELD OF INVENTION[0002]The present invention relates to the field of probiotics and their ability to enhance animal health or the general physical condition of animals.BACKGROUND OF INVENTION[0003]The Bacillus genus comprises numerous endospore-forming bacteria that have myriad uses in the agricultural and animal nutrition fields, among others. Several strain of Bacillus are currently marketed for use as probiotics in animal feed as an alternative to antibiotics. These probiotics enhance animal health, including improving animal growth and feed efficiency, by modulating the gastrointestinal flora. Use of such probiotics has increased due to concerns about antibiotic residues in animal products for human consu...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K35/74A23K1/18
CPCA23K1/009A23K1/184A23K1/1826A23K1/1813A23K10/18A23K50/10A23K50/75A23K50/30A61P3/00A61P31/04A61P43/00A61K35/742
Inventor SCHMIDT, JOSEPH EARLJIMENEZ, DESMOND RITO
Owner BAYER CROPSCI LP
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