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Impact of coccidiostat and phytase supplementation on gut microbiota composition and phytate degradation in broiler chickens

  • Künzel S
  • Borda-Molina D
  • Kraft R
  • et al.
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Abstract

There is good evidence for a substantial endogenous phytase activity originating from the epithelial tissue or the microbiota resident in the digestive tract of broiler chickens. However, ionophore coccidiostats, which are frequently used as feed additives in broiler diets to prevent coccidiosis, might affect the bacterial composition and the abundance of phytase producers in the gastrointestinal tract. The aim of the present study was to investigate whether supplementation of a frequently used mixture of the coccidiostats Narasin and Nicarbazin alone or together with a phytase affects microbiota composition of the digestive tract of broiler chickens, characteristics of phytate breakdown in crop and terminal ileum, and precaecal phosphorus and crude protein digestibility.

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Künzel, S., Borda-Molina, D., Kraft, R., Sommerfeld, V., Kühn, I., Camarinha-Silva, A., & Rodehutscord, M. (2019). Impact of coccidiostat and phytase supplementation on gut microbiota composition and phytate degradation in broiler chickens. Animal Microbiome, 1(1). https://doi.org/10.1186/s42523-019-0006-2

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