BIOAVAILABILITY REDUCTION OF AFLATOXIN B1 AND PERFORMANCE OF BROILER CHICKENS FED WITH NATIVE Pichia kudriavzevii

ALEJANDRA MAGNOLI,; MARINA RODRIGUEZ; MARIA FERNANDA PERALTA; ARMANDO JESUS NILSON; RAUL MIAZZO; STELLA MARIS CHIACCHIERA; LILIA RENE CAVAGLIERI

FLORIANOPOLIS

Congreso; VIII Congresso Brasileiro de Micologia; 2016

Aflatoxin B1 (AFB1) is a mycotoxin produced by Aspergillus flavus and A. parasiticus and produces severe economic losses and health problems in poultry because of its toxicity and frequency of occurrence in feedstuffs. The toxicity of AFB1 in broilers includes carcinogenic, mutagenic, teratogenic, and growth inhibitory effects. One of the most practical solutions to this problem is the use of non-nutritive adsorbents incorporated to the diets. These substances sequester the toxin in the gastrointestinal tract forming insoluble complexes which are removed with faeces. Others additives such as yeast and yeast cell wall products have also been suggested more recently for reducing aflatoxicosis in poultry. The aim of this study was to evaluate the efficacy of native yeast strains from broilers feedstuff, in reducing the toxicity of aflatoxin in broilers fed a diet naturally contaminated. Cobb broilers (160) of 1-day-old were randomly assigned to 4 dietary treatments, T1: basal diet (B); T2: B + yeast 0.1%; T3: B + AFB1 (100 μg/kg); T4: B + yeast 0.1% + AFB1 (100 μg/kg). Productive parameters (body weight gain ?BWG-, feed consumption ?FC-, feed conversion ratio ?FCR-, carcass yield ?CY- and dead weight -DW), biochemical (ALB, GLOB and ALB/GLOB), liver pathological changes and AFB1 residual levels in livers were investigated. Significant differences (P