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Author Spotlight: Advancing Intestinal Bacteria Cultivation for Poultry
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Correlations between changes in intestinal microbiota composition and performance parameters in broiler chickens
L A Rubio1, M J Peinado, R Ruiz
1Depto. de Fisiología y Bioquímica de la Nutrición Animal (INAN, EEZ, CSIC), Granada, Spain.
Journal of Animal Physiology and Animal Nutrition
|October 1, 2014
Summary
Dietary additives like inulin, fructose caramel, and a garlic derivative influenced broiler chicken gut bacteria. Specific bacterial changes correlated with improved nutrient digestibility and weight gain, highlighting microbiota
Area of Science:
- Animal Science
- Microbiology
- Nutritional Science
Background:
- Intestinal microbiota composition significantly impacts broiler chicken health and performance.
- Feed additives are increasingly used to modulate gut microbiota and improve production outcomes.
Purpose of the Study:
- To investigate the effects of inulin, fructose caramel (FC), and a garlic derivative (PTS-O) on the intestinal microbiota of broiler chickens.
- To determine correlations between specific microbial populations and nutritional parameters, including digestibility and growth performance.
Main Methods:
- Growing male Cobb broiler chickens were fed diets with no additive, inulin (20 g/kg), FC (20 g/kg), or PTS-O (45 and 90 mg/kg).
- Intestinal microbiota composition was analyzed using quantitative PCR (qPCR) at various intestinal sites.
- Nutritional parameters, including fecal nutrient digestibility and broiler weight gain, were measured.
Main Results:
- Increased Bacteroides populations in the ileum positively correlated with improved digestibility of NDF, ADF, hemicellulose, and cellulose.
- Higher Escherichia-Shigella levels in the crop negatively correlated with broiler weight gain.
- Escherichia-Shigella in the cecum showed a negative correlation with fecal fat digestibility.
- Total bacteria in the ileum and cecum negatively correlated with ileal nitrogen digestibility.
Conclusions:
- Dietary supplementation with inulin, FC, and PTS-O can alter broiler intestinal microbiota composition.
- Specific microbial shifts are associated with changes in nutrient utilization and growth performance.
- Modulating gut microbiota through feed additives presents a strategy for enhancing broiler production efficiency.
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