One, the account that immune pig produces swine fever

The problem of 1. vaccinal respect

Quality of ① vaccinal itself differs the young plant of swine fever freeze-dry that in working actually in recent years, discovers manufacturer is produced to have lack fidelity empty appearance. Personnel of basic level vet is faced before using, do not undertake to vaccine physics is checked, cause immune failure.

The method that ② vaccine saves must not ask when seedling of swine fever freeze-dry microtherm is saved, and the date that saves below different temperature condition is different also. Press a regulation, storage life rises from production date, at - save below refrigerant condition of 15 ℃ , period of efficacy is the period of efficacy that cold dark dry place saves ℃ of 8 of ～ of 1 year of;0 to be ℃ of 25 of ～ of 6 months;8 dark and dry place is saved, period of efficacy is 10 days. Vet personnel is being bought or take when using vaccine, do not take heat preservation box to save vaccine, and resumptive hind place not in time again inside freezer. When epidemic prevention injects, expose attenuant vaccine below sunshine, cause nature of vaccinal effect price to reduce.

③ is used will the vaccine of vaccinal swine fever of invalidation is supplied point-blank. In recent years the contradiction as a result of produce and sale, ranking business section carries the vaccine that come often is the vaccine that is close to failure period, and, after vaccine arrives in vet personnel hand, cannot save temporarily by formulary temperature again, this makes be about price of effect of invalidation epidemic seedling loses effect completely.

④ is used expire attenuant vaccine in last few years, use swine fever generally to foster live vaccine to undertake immunity to the pig. Weak poisonous vaccine accelerates the swine fever immunity that the degradation speed after this kind of swine fever fosters vivid vaccinal dilute compares the past, significant time shortens, ask in ℃ of air temperature 15 the following condition assures 6 hours 3 hours below condition of ℃ of 21 of ～ of gone;15 after vaccinal dilute namely inside gone. If exceed significant time, cause immune failure.

The problem of 2. technology respect

① appliance disinfection is lax the alexipharmic idea with severe shortage of a lot of basic level technician, appliance is not disinfected by the requirement when immunity injects. If encounter,have preclinical swine fever, inevitable meeting causes the pinhead that disinfects lax case and injector belt poison, cause bottles of whole attenuant and vaccinal pollution, eruptive swine fever is popular after causing inject.
上一页12 下一页

上一篇：Much treasure fish breeds door for be economical the medicine that buy animal fe
下一篇：Ill vaccine of fish of the first sea of our country considers to obtain newest b