四大家鱼常见细菌病的诊断和治疗_康安娜__20150514_214141（4. Diagnosis and treatment of common bacterial diseases of the fish _ conana __20150514_214141）.doc

四大家鱼常见细菌病的诊断和治疗_康安娜_214141（4. Diagnosis and treatment of common bacterial diseases of the fish _ conana _214141） Four people fish disease diagnosis and treatment of common bacteria _ Kang Anna no evaluation | 31 people read download | | 10 times to report document Heilongjiang aquaculture 2013, 27) drug dosage can determine drug at the same time to host (farmed shrimp) and intensity of the role of pathogens, in other words, the dosage is to host security, health, and inhibition and elimination of pathogens. The higher the concentration of the drug, the higher the concentration of the drug. On the contrary, the effect is smaller. Usually, the dosage of the drug is divided into the minimum effective amount, the usual dosage (that is, the amount of treatment), the extreme amount, and the amount of intoxication. The dosage selection range is generally in the minimum effective quantity above, the amount of medicine under the extreme amount is called the safety range. The minimum effective amount can not exert the full effect, can delay the disease easily, and the extreme can cause serious adverse reaction, even endanger the security of the host. Antimicrobial drugs generally in the form of oral drug delivery, drug dose should be according to feed fish in aquaculture water weight and determine, drugs are often mixed in the feed to fish, so according to the feeding fish feeding rate to calculate the dose should be added in feed. 2.3 scientific preparation time and number of antimicrobial drug treatment should consider two aspects, one is the dosing interval, namely a ZhongYangShi biological after disease diagnosis, treat once daily or drug use two or more times a day, or medication to go once; The second is how many times and days total should be taken. Is the time interval and period of treatment of drug half-life (T1/2) according to specific drugs, drug absorption, distribution and discharge in the body is the process of pharmacokinetic and drug to de