America larva is moldy (American Foulbrood) cry again " sodden child ill " , it is a kind of of apian larva malign contagion. America larva is moldy disease distributings extremely wide, almost world each country has happen, come on with tropics and semi-tropical area among them heavier.
America larva is moldy disease is caused by place of larval gemma bacili. Bacterium body length 5 micron of 2 ～ , wide 0.7 micron of 0.5 ～ , can move, if use aniline black or prepared Chinese ink is lost when catching, can observe the flagellum that becomes bunch. This bacili often forms gemma to resist medication, it is a kind of larval disease that cures very hard.
America larva is moldy disease basically is old ripe larva or aurelian death. Accordingly, right doubtful suffer from America larva the bee colony of moldy disease, but from inside bee colony draw-out a cap is lienal 1 ～ 2 pieces, careful observation. If discover child lienal surface presents damp, glossy, when having bore a hole, criterion but have observation from body of larva of the winkle in perforative apiary further. If discover larval body shows beige or coffee color, when having stickiness, can be America larva certainly moldy disease.
Larva of 24 hours suffers hatch the most easily infection, suffer infection not easily through two days of the following larva; Accordingly, aurelian and also do not suffer infection into bee. Inside bee colony, disease basically is opposite through office staff bee the larval larva that feed raise activity and passes the bacteria health, and the feed that is polluted (the honey that carry bacterium) with sicken mew lienal the main source that is disease transmission. Between bee colony, the member that disease basically passes beekeeper is inobservant the operation activity of wholesome regulations, if mix sicken bee colony and healthy bee colony,raise, beehive bee is provided mix use and exchange at will child lienal etc, the transmission that causes disease possibly spreads. Next, the pilfer bee on bee field and the bee that confuse mew, transmit a bacteria possibly also.
America larva is moldy the bacteria grows the most comfortable temperature of the requirement is between 37 ℃ of 34 ～ . Accordingly, america larva is moldy red-letter day of ill much more popular Yu Xia, fall, namely bee colony breed is filled period.
Moldy to America larva disease must adopt synthetic method to undertake preventing and cure, but from following 3 respects undertake.
Segregation is ill group
To sicken bee colony, must undertake keeping apart, forbidden mix with healthy bee colony raise; To other fitness bee colony still must use medicaments to undertake preventive cure.
Classify treatment
To getting a severe disease group (rot commonly child lead the person that amount to 10% above) , must undertake box changes lienal processing be changinged thoroughly. To light disease group, except need all rotting that larva keeps clear of clean to use forceps general beyond, still must dip in with pily ball take the Xin Jie Er of 0.1% to destroy solution cleans 1 ～ of mew room 2 times. Right long treat the heavy disease that does not heal group, to prevent to catch other swarm, should adopt the measure that burns bee to burn box, burn thoroughly destroy.
Union undertakes medicationing
Medicaments of the optional amine that use sulphur undertakes raise is fed or gush is lienal. But before must collecting honey period to come, two months undertake, lest pollute honey. Tablet of sulphanilamide thiazole natrium or injection all but. Every kilogram the syrup of 1 joins 1 ︰ the sulphanilamide thiazole natrium of 1 gram, smooth hind feed bee.
