ADITIVO SIMBIÓTICO: UMA ALTERNATIVA AO USO DOS ANTIBIÓTICOS EM GALINHAS POEDEIRAS COMERCIAIS

• DOI: 10.22533/at.ed.0612311106

• Palavras-chave: avicultura de postura; microbiota intestinal; Nutrientes; Trato gastrointestinal.

• Keywords: Layer poultry farming; gut microbiota; Nutrients; Gastrointestinal tract.

• Abstract: The intestinal microbiome of commercial laying hens is composed of a diversity of commensal and/or mutualistic microorganisms that colonize the entire gastrointestinal tract. These microorganisms play a fundamental role in the metabolism of nutrients present in the diet, in the intestinal balance and in the preservation of the integrity of the tissue wall of the intestinal organs. They optimize nutrient absorption, contributing to better bird performance. It is extremely important to understand the functionality of this intestinal ecosystem, as the incorporation of specific functional additives can enhance the action of the intestinal microbiota. These symbiotic additives improve nutrient absorption and, consequently, bird performance. This becomes particularly relevant in view of the disuse of antibiotics as animal growth promoters. This study adopted a descriptive methodology, performing a bibliographic review based on international scientific articles. The main objective was to demonstrate the main aspects of the intestinal microbiota of commercial laying hens and to highlight the importance of using symbiotic additives as an alternative to antibiotics in promoting animal growth.