FundaÃÃo de Amparo à Pesquisa do Estado do Cearà / AlimentaÃÃo à um dos itens que mais onera a exploraÃÃo econÃmica de aves. No Estado do Cearà este problema se acentua, principalmente devido a necessidade de importar milho e soja de outros estados e paÃses (no caso do milho) e da oscilaÃÃo sazonal nos preÃos desses ingredientes. Na tentativa de reduzir os custos, tem se procurado utilizar alimentos âalternativosâ, como o farelo de castanha de caju (FCC) e o farelo de coco (FC) na formulaÃÃo de raÃÃes para aves. Em geral, estes farelos sÃo ricos em lipÃdios e estÃo propensos a desenvolverem rancidez oxidativa, principal responsÃvel pelas perdas de qualidade dos alimentos. Para evitar a peroxidaÃÃo lipÃdica à comum tratar ingredientes ou raÃÃes com antioxidante durante o armazenamento. O presente trabalho teve como objetivos avaliar a estabilidade oxidativa do FCC e do FC, tratados ou nÃo com BHT (Butil hidroxitolueno) em diferentes tempos de armazenamento, e os efeitos da utilizaÃÃo destes ingredientes nas raÃÃes sobre o desempenho zootÃcnico de frangos de corte e de poedeiras comerciais, respectivamente. Para cada ingrediente, a quantidade adquirida foi dividida em cinco partes iguais. No dia zero (logo apÃs o beneficiamento), uma das partes foi tratada com BHT, na proporÃÃo de 500 ppm, enquanto outra permaneceu sem a adiÃÃo de antioxidante atà o final de 35 dias de armazenamento. Nas demais porÃÃes o BHT foi adicionado aos 7, 14 e 21 dias. Semanalmente, foram determinados os Ãndices de acidez (IA) e de perÃxidos (IP). Decorrido o perÃodo de armazenamento, o FCC e o FC foram utilizados na formulaÃÃo das raÃÃes para frangos de corte (Experimento 1 com FCC) e para poedeiras comerciais (Experimento 2 com FC). No experimento 1 foram utilizados 480 pintos de um dia, Ross, distribuÃdos ao acaso em cinco tratamentos, com oito repetiÃÃes de doze aves cada. Os tratamentos constaram de raÃÃes isonutrientes contendo: FCC sem adiÃÃo de BHT (s/BHT); FCC com adiÃÃo de BHT no dia zero (BHT/0); FCC com adiÃÃo de BHT 7 dias apÃs o armazenamento (BHT/7); FCC com adiÃÃo de BHT 14 dias apÃs o armazenamento (BHT/14); FCC com adiÃÃo de BHT 21 dias apÃs o armazenamento (BHT/21). O IA do FCC durante o perÃodo de armazenamento nÃo variou, independente do uso ou nÃo de antioxidante, enquanto que, o IP do FCC com ou sem BHT aumentou com o tempo de armazenamento. Os tratamentos nÃo afetaram o desempenho (consumo de raÃÃo, ganho de peso e conversÃo alimentar), as caracterÃsticas de carcaÃa (rendimento de carcaÃa e de peito e, percentagem de fÃgado e gordura abdominal) o teor de umidade do fÃgado e o teor de umidade e extrato etÃreo da gordura abdominal dos frangos de corte. Os parÃmetros de qualidade da carne (perdas por cocÃÃo, capacidade de retenÃÃo de Ãgua, forÃa de cisalhamento e pH) e os componentes de cor luminosidade (L*) e intensidade de vermelho (a*) da gordura nÃo diferiram entre si. Entretanto, no grupo das aves que receberam FCC tratado com BHT/0 o teor de extrato etÃreo do fÃgado foi menor e a intensidade de amarelo (componente b*) da gordura abdominal foi maior quando comparado com o das aves do tratamento controle. No experimento 2, foram utilizadas 180 poedeiras Hisex brancas, no segundo ciclo de produÃÃo, distribuÃdas ao acaso em cinco tratamentos e seis repetiÃÃes de seis aves cada. Os tratamentos consistiram de raÃÃes isonutrientes contendo: FC sem adiÃÃo de BHT (s/BHT); FC com adiÃÃo de BHT no dia zero (BHT/0); FC com adiÃÃo de BHT 7 dias apÃs o armazenamento (BHT/7); FC com adiÃÃo de BHT 14 dias apÃs o armazenamento (BHT/14); FC com adiÃÃo de BHT 21 dias apÃs o armazenamento (BHT/21). O IA e IP do FC armazenado com ou sem BHT, aumentaram com o tempo de armazenamento. O nÃvel de oxidaÃÃo observado no FC e, consequentemente, nas raÃÃes, nÃo afetou o desempenho produtivo (consumo de raÃÃo, percentagem de postura, massa de ovo e conversÃo alimentar) e a qualidade dos ovos (peso do ovo, Unidades Haugh, percentagem de gema, casca e albÃmen, e cor da gema). O FCC e o FC armazenados por 35 dias sem antioxidante podem compor as raÃÃes de frangos de corte e poedeiras, respectivamente, sem prejudicar o desempenho produtivo e a qualidade da carne e dos ovos. Entretanto, frangos de corte alimentados com raÃÃo contendo 15% de FCC tratado com BHT/0 apresentam menor teor de extrato etÃreo no fÃgado e maior intensidade de amarelo na gordura abdominal / Feeding is one of the item that more the economic exploration of birds burdens. In the State of the Cearà this problem if accents, mainly due the necessity to import maize and soy of other states and countries (in the case of the maize) and of the sazonal oscillation in the prices of these ingredients. In the attempt to reduce the costs, if it has looked for to use âalternativeâ foods, as the cashew chestnut bran (FCC) and the bran of coconut (FC) in the formularization of rations for birds. In general, these brans are rich in lipÃdios and are inclined to develop oxidativa, main rancidez responsible for the losses of quality of foods. To prevent the lipÃdica peroxidaÃÃo it is common to treat ingredients or rations with antirust substance during the storage. The present work had as objective to evaluate the oxidativa stability of the FCC and the FC, dealt or not with BHT (hidroxitolueno Butil) in different times of storage, and the effect of the use of these ingredients in the rations on the zootÃcnico performance of chickens of cut and commercial poedeiras, respectively. For each ingredient, the acquired amount was divided in five equal parts. In day zero (soon after the improvement), one of the parts was dealt with BHT, in the ratio of 500 ppm, while another one remained without the antirust substance addition until the end of 35 days of storage. In the too much portions the BHT was added to the 7, 14 and 21 days. Weekly, the peroxide and acid values had been determined (WENT) (IP). Passed the period of storage, the FCC and the FC had been used in the formularization of the rations for chickens of cut (Experiment 1 with FCC) and for commercial poedeiras (Experiment 2 with FC). In experiment 1 480 young chickens of one day had been used, Ross, distributed to perhaps in five treatments, with eight repetitions of twelve birds each. The treatments had consisted of isonutrientes rations contend: FCC without BHT addition (s/BHT); FCC with addition of BHT in day zero (BHT/0); FCC with BHT addition 7 days after the storage (BHT/7); FCC with BHT addition 14 days after the storage (BHT/14); FCC with BHT addition 21 days after the storage (BHT/21). IT WENT IT of the FCC during the period of storage did not vary, independent of the use or not of antirust substance, whereas, the IP of the FCC with or without BHT increased with the storage time. The treatments had not affected the performance (consumption of ration, profit of weight and alimentary conversion), the characteristics of carcass (chest and carcass income and, percentage of liver and abdominal fat) the text of humidity of the liver and the text of humidity and etÃreo extract of the abdominal fat of the cut chickens. The parameters of quality of the meat (losses for firing, capacity of water retention, force of shear and pH) and the components of color luminosity (L*) and intensity of red (a*) of the fat had not differed between itself. However, in the group of the birds that had received FCC dealt with BHT/0 the etÃreo extract text of the liver was lesser and the yellow intensity (component b*) of the abdominal fat was bigger when compared with the one of the birds of the treatment it has controlled. In experiment 2, 180 white poedeiras Hisex had been used, in as the cycle of production, distributed to perhaps in five treatments and six repetitions of six birds each. The treatments had consisted of isonutrientes rations contend: FC without BHT addition (s/BHT); FC with addition of BHT in day zero (BHT/0); FC with BHT addition 7 days after the storage (BHT/7); FC with BHT addition 14 days after the storage (BHT/14); FC with BHT addition 21 days after the storage (BHT/21). IT WENT IT and IP of the FC stored with or without BHT, had increased with the storage time. The level of oxidation observed in the FC and, consequentemente, in the rations, did not affect the productive performance (consumption of ration, percentage of position, egg mass and alimentary conversion) and the quality of eggs (weight of the egg, Haugh Units, egg yolk percentage, rind and albÃmen, and color of the egg yolk). The FCC and the FC stored per 35 days without antirust substance can compose the rations of cut chickens and poedeiras, respectively, without harming the productive performance and the quality of the meat and eggs. However, fed chickens of cut with ration I contend 15% of FCC dealt with BHT/0 present minor text of etÃreo extract in the liver and greater yellow intensity in the abdominal fat