Correlations between changes in intestinal microbiota composition and performance parameters in broiler chickens |
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Authors: | L. A. Rubio M. J. Peinado R. Ruiz E. Suárez‐Pereira C. Ortiz Mellet J. M. García Fernández |
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Affiliation: | 1. Depto. de Fisiología y Bioquímica de la Nutrición Animal (INAN, EEZ, CSIC), Granada, Spain;2. Depto. de Química Orgánica, Facultad de Química, Univ. de Sevilla, Sevilla, Spain;3. Instituto de Investigaciones Químicas (CSIC), Univ. de Sevilla, Sevilla, Spain |
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Abstract: | Growing male Cobb broiler chickens were fed on diets supplemented with additives reported as able to influence intestinal microbiota composition. The diets used were a balanced commercial diet (no additive), inulin (20 g/kg), fructose caramel (FC, 20 g/kg) and the garlic derivative PTS‐O (propyl propane thiosulfonate, 45 and 90 mg/kg diet). The composition of the intestinal microbiota was analysed by qPCR at different points of the intestinal tract, and a number of nutritional parameters were also determined. The relative amounts of bacteroides (bacteroides/total bacteria) in the ileal contents correlated (p < 0.05) positively with faecal NDF, ADF, hemicellulose and cellulose digestibility. The relative amounts of Escherichia–Shigella (Escherichia–Shigella/total bacteria) in the crop contents correlated (p = 0.05) negatively with weight gain of broilers. Faecal N digestibility correlated (p < 0.05) negatively with total bacteria in the ileal contents of chickens. The relative amounts of Escherichia–Shigella (Escherichia–Shigella/total bacteria) in the caecal contents correlated (p = 0.05) negatively with faecal fat digestibility of broilers. Total bacteria in ileal or caecal contents of growing chickens correlated (p < 0.05) negatively with ileal N digestibility. The results here reported suggest that positive or negative correlations can be found between performance parameters and changes in intestinal microbiota composition of growing broiler chickens. |
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Keywords: | broiler correlation intestinal microbiota nutritional parameters |
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