Oligosaccharide Feed Additives Reduce Pathogenic E. coli
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Solution Overview
Problem
Current methods for reducing pathogenic E. coli populations in production animals rely heavily on antibiotics, which is unsustainable, and there is a need for novel, non-antibiotic approaches to modulate pathogenic E. coli populations and improve animal health by targeting specific genes and bacteria in the gastrointestinal tract.
Innovation Solution
Feeding animals oligosaccharides and essential oils to reduce the population of LEE genes and non-LEE pathogenic genes of EHEC, EPEC, and APEC, as well as Bacteroides thetaiotaomicron, thereby decreasing inflammation and pathogenicity, using specific feed additives that alter the microbiome composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antibiotics are used to reduce pathogenic E. coli populations, then the effectiveness in reducing bacteria is improved, but sustainability and residue issues worsen
Solution Approach 1:
The patent uses prebiotic compounds (oligosaccharides, inulin, fructooligosaccharides) as intermediary substances that selectively promote the growth of beneficial bacteria (Lactobacillus, Bifidobacterium) which in turn compete with and reduce pathogenic E. coli populations. This mediator approach avoids direct use of antibiotics while achieving bacterial population control through ecological manipulation of the gut microbiome.
Solution Approach 2:
The patent converts the harmful effect of pathogenic E. coli into a benefit by using probiotic bacteria (Lactobacillus acidophilus, Bifidobacterium animalis) that produce bacteriocins and organic acids which naturally inhibit E. coli growth. The harmful bacterial population is reduced not by direct killing but by beneficial bacterial competition and antimicrobial substance production.
2Ease of operation
If conventional feed additives are used, then ease of operation is improved, but ability to specifically target pathogenic genes worsens
Solution Approach 1:
The patent applies local quality by using specific prebiotic compounds (different oligosaccharide structures) that selectively target and promote specific beneficial bacterial strains (Lactobacillus vs. Bifidobacterium) which in turn selectively inhibit pathogenic E. coli. Each prebiotic component has a specific chemical structure that binds to specific bacterial receptors, creating localized specificity within the general feed additive system.
Solution Approach 2:
The patent employs composite feed formulations containing multiple prebiotic compounds (oligosaccharides, inulin, fructooligosaccharides) combined with probiotic bacteria (Lactobacillus acidophilus, Bifidobacterium animalis) to create a synergistic system. This composite approach combines the simplicity of feed administration with enhanced specificity through multiple active components that collectively target pathogenic genes more effectively than single additives.
Data Source
AI summary
The present disclosure relates to methods of modulating level of pathogenic E. coli (EHEC, EPEC, APEC) present in the gastrointestinal tract of an animal by administering saccharide compositions comprising an anhydro moiety. The presence/load with pathogenic E. coli strains can be assessed via the level of LEE and non-LEE pathogenic genes in the microbiome of the host animal.