Abstract
Effect of Sodium. Nifurstyrenate (NFS-Na) and two therapeutic agents for experimental streptococcal infection were studied with yellowtail.
Two times on in vivo antibacterial experiment were examined. Influence of challenge dose on the protective effect of NFS-Na was examined at experiment A.
The protective effect of NFS-Na was compared with that of two therapeutical agents, and administration dose of NFS-Na and period of administration were examined at experiment B.
NFS-Na showed a remarkable therapeutic effect at the administration for three or five days at 50 mg per kg body weight per day.
Ampicillin do not showed therapeutic effect at the administration for five days at 50 mg per kg body weight per day. Chloramphenicol showed a slight therapeutic effect at the administration for five days at 50 or 25 mg per kg body weight per day.
