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Effects of Encapsulated Cinnamaldehyde on Growth Performance, Intestinal Digestive and Absorptive Functions, Meat Quality and Gut Microbiota in Broiler Chickens

2021 CPRF,Gut Health, Antibiotic Alternatives & Management
Essential oils are potential antimicrobial alternatives and their applications in animal feeds are limited due to their fast absorption in the upper gastrointestinal tract. The objective of this study was to investigate the effects of encapsulated cinnamaldehyde (CIN) at 50 mg/kg or 100 mg/kg on the growth performance, organ weights, meat quality, intestinal morphology, jejunal gene expression, nutrient digestibility, and ileal and cecal microbiota in broiler chickens. Our study found that dietary encapsulated CIN improved meat quality and gut health by reducing meat WBFS, increasing VH/CD in intestines, jejunal gene expressions, AID of nutrients, and beneficially ileal and cecal microbiota composition. 2. Poster competition: Antimicrobial Resistance Phenotype and Genotype of Generic Escherichia coli from Encapsulated Cinnamaldehyde and Citral Fed-Broiler Chicken. Due to the emergency of antimicrobial resistance (AMR), it is urgent to explore antimicrobial alternatives such as essential oils. However, there are limited studies were conducted on effects of essential oils on AMR of chicken representative bacteria such as E. coli. This study investigated the effects of in-feed encapsulated cinnamaldehyde (CIN) and citral (CIT) alone or in combination (CIN+CIT) on AMR phenotypes and genotypes of E. coli isolated from feces of 6-, 16-, 23- and 27-days old broiler chickens fed five dietary treatments including the basal diet (control; NC), the basal diet supplemented with 55 ppm bacitracin (BAC), 100 ppm encapsulated CIN, CIT, or CIN+CIT. Our study indicates that AMR and virulence genotypes of E. coli could be modulated by encapsulated CIN or CIN+CIT feed supplementations and prompt further investigations on the involved mechanisms. 3. Poster presentation: Virulence Potential of Antimicrobial Resistant Extraintestinal Pathogenic Escherichia coli from Poultry in a Caenorhabditis elegans Model Healthy poultry can be a reservoir for extraintestinal pathogenic Escherichia coli (ExPEC) among which antimicrobial resistance (AMR) strains could be promoted by antibiotic. These ExPEC strains could contaminate the environment and/or the food chain to threaten human health. However, the zoonotic potentials of poultry-source ExPEC are still controversial. In the present study we investigated the virulence potential of poultry antimicrobial resistant ExPEC by Caenorhabditis elegans life-span model. Our study indicated the zoonotic potential of AMR ExPEC isolates from retail poultry meat or feces. However, the relationship between specific AMR profiles and/or numbers of VGs with pathogenicity in these E.coli isolates deserve further investigations.
Tags :
Cinnamaldehyde,gut microbiota,meat quality
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Presenter

PhD Candidate

University of Manitoba

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