EFFECTIVENESS OF THE TOLTRAZURIL AND OF THE ENROFLOXACINE IN THE CONTROL OF ECTOPARASITES AND BACTERIAS IN PACU (Piaractus mesopotamicus)*

摘要

The fish farming diseases cause economic losses due at high mortality rates and spending of the pharmochemicals for treatment. In Brazil there are few molecules registered for use in aquaculture, thus many chemical substances are used of indiscriminately form, without dosage control and exposure time, causing negative impact at aquatic environment. Thus, the aim this research was to evaluate the potential of the toltrazuril (TOL), how ectoparasiticide for Trichodina klerodentata, lchthyophthirius multifiliis, monogenetics and of the enrofloxacine (ENRO), how antibiotic for bacteria in pacu (P. mesopotamicus).