猪场常用消毒剂对沙门氏菌等细菌的作用效果试验

Effects of disinfectants on controlling bacteria such as salmonella commonly found in hogpens

为了解目前猪场常用消毒剂对猪场常见肠道致病菌的杀菌作用，开展了5种猪场常用消毒剂（特碘、复合醛、消特灵、氢氧化纳和高锰酸钾）杀灭5种猪场常见肠道致病菌（沙门氏菌、大肠杆菌、奇异变形杆菌、弗氏枸橼酸杆菌和绿脓杆菌）最低浓度（MBC）的试验，依次为1：600～1：800，1：10001：2500，1：30000-1：40000，0．01％～0．03％，0．0008％～0．004％。观察温度对各种消毒剂作用沙门氏菌MBC的影响，结果表明，温度越高，特碘的MBC也越高，复合醛则越低，而其他3种影响不大；固定各种消毒剂浓度所能杀灭的最高沙门氏菌浓度，均能达到10^6个·ml^-1以上，两种消毒剂配合使用效果不一。同时还检测了终止和不终止消毒剂作用对杀菌效果的影响不大，并对猪场用药提出几点建议。

Experiments were carried out to study minimum bactericidal concentration （MBC） of 5 kinds of disinfectants （double fouthdiamine salt-iodine solution, compound aldehyde, chlorine-containing disinfectant; sodium hydroxide and potassium permanganate） against 5 kinds of pathogenic bacteria, and the above MBCs of disinfectants were 1：600-1：800,1：1000-1：2500, 1： 30000-1：40000,0.01%-0.03% and 0.0008%-0.004% ,respectively. It emphatically evaluated the sterilized efficacy of each kind of disinfectant to salmonella at different temperatures. The results showed that following the increase of environmental temperature, the MBC of double fouthdiamine salt-iodine solution went up, but the MBC of compound aldehyde was down and the MBC of other three kinds of disinfectants did not change with environmental temperature. The highest salmonella concentrations killed by 5 kinds of MBC of disinfectants reached 10^6cfu·ml^-1 ; the effeciency that simultaneously used two kinds of disinfectants was dissimilar. Terminating or not the disinfectant function did not affect the sterilized effect. Several proposals were suggested to pig raisers about how to use the disinfectants.