Desempenho de frangos de corte oriundos de matrizes de corte submetidas a dietas contendo aflatoxinas e glucomananos esterificados como adsorvente

the performance of the progeny from breeders hens fed diets containing aflatoxins and esterified glucomannans as a mycotoxins adsorbent during four and eight weeks was evaluated. two experiments were carried out with broiler chickens from 1 to 21 days of age. in each study, one hundred and sixty 1-day old male chicks from broiler breeders fed diets with aflatoxins and mycotoxins adsorbent were used. the chicks were allocated in a completely randomized experimental design with five treatments and four replicates of eight birds each. in the diets supplied to the breeder chickens, aflatoxins were added at levels of 0, 0.500, or 0.750 mg/kg of the diet with or without 0.10% adsorbent. the two experiments were conducted in batteries installed in an environmental experimental controlled unit, where chicks received an aflatoxin-free diet during the entire trial period. the parameters studded were: body weight, weight gain, feed:gain ratio by weight gain, total plasmatic proteins, serum albumin, and liver and bursa weights at the first day of age. the addition of levels of up to 0.750 mg aflatoxins/kg and adsorbent in the breeders diets during eight weeks does not affect the performance or blood parameters of the broiler breeder progeny.