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O principal objetivo deste trabalho foi o de estudar a influencia da utilizacao do halquinol (uma mistura de 5,7-dicloro-8-quinolinol, 5-cloro-8 quinolinol e 7-cloro-8-quinolinol) como promotor de crescimento, bem como sua possivel acao no controle da coccidiose, em frangos de corte. Foram analisados parâmetros como ganho de peso, conversao alimentar, viabilidade e indice de eficiencia produtiva. Foram constituidos 6 tratamentos, num total de 2880 aves criadas em piso, com diferentes niveis da droga na racao. Observou-se que a utilizacao do halquinol como promotor de crescimento nao alterou significativamente (P>0.05) o ganho de peso, a conversao alimentar e a viabilidade das aves. A associacao do halquinol a outros promotores de crescimento tambem nao influenciou positivamente (P>0.05) os parâmetros zootecnicos avaliados. No segundo estudo, num experimento em gaiolas procurou-se avaliar a acao do halquinol no controle da coccidiose, comparando-se a acao de 30 g/ton do produto associado ou nao ao coccidiostatico maduramicina frente a inoculacao de diferentes Eimerias. Foram utilizadas 40 aves criadas em gaiolas que receberam um inoculo misto de E.tenella, E. acervulina e E. maxima, sendo entao realizado escore de lesoes. Como resultado observou-se que a utilizacao do halquinol potencializa a acao da maduramicina no controle da E. acervulina, nao apresentando entretanto qualquer efeito no controle da E. maxima e E.tenella. Utilization of halquinol as a growth promoter and coadjuvanto on coccidiosis control in broilers Abstract The main purpose of this stud was to invetigate the clorade-8-hidroxiquinolim (halquinol) drug influence as a promoter of growth, as well as it´s possible action in the coccidiosis control in chicken for human consumption. Some parameters have been analised such as weight gain, food conversion ,viability and produtive efficiency index. Six treatments were undertaken, on a total of 2880 birds raised on flat surface with different levels of drug in then feed .It was noted that the utilization of halquinol as a promoter of growth didn´t alter significantly (P>0.05) the weight gain, the feed conversion and the viability of the birds. The addition of halquinol to other growth promoters also didn´t influence positively (P>0.05) the evalueted zootechnical parameters. In the second study, during a bird cage experiment there was no attempt to evaluate the halquinol action in the control of coccidiosis by comparing the of 30 g/ton of clorade-8-hidroxiquinolin (halquinol) associade or not with maduramicine coccidiostatic during the Eimerias innoculation. There were utilize 40 cages raised birds wich received a mixed E. tennela, E. acervulina e E. maxima inoculum, and was performed a lesion count. As a result it was observed that the utilization of halquinol potencializes the maduramicine action in the control of E. acervulina; however no showing any effect in the control of E.maxima and E. tenella.

UTILIZAÇÃO DO HALQUINOL COMO PROMOTOR DE CRESCIMENTO E COADJUVANTE NO CONTROLE DA COCCIDIOSE EM FRANGOS DE CORTE