吉林省母猪繁殖障碍的病因调查

在吉林省长春、四平、松原、辽源 4个地区 ,对正在发生母猪繁殖障碍的 18个猪场进行了病因调查。对 4 998头繁殖母猪包括发生繁殖障碍的母猪进行了现场调查和临床检查 ;对发生繁殖障碍的母猪和部分公猪血清 10 4 0头份进行了抗体检测 ;对 10 6头份死胎病料进行了实验室检查 ,对其中 76头份死胎病料采用免疫荧光试验检测了抗原。结果表明 ,吉林省母猪繁殖障碍的平均发病率为 19.83% ,主要由PRV、PPV、CSFV和PRRSV感染引起 ;PRV、PPV、CSFV和PRRSV的抗体阳性率分别是 6 1.4 %、5 3.7%、2 .9%和 2 2 .0 % ;相应的抗原检出率分别为 6 9.8%、35 .3%、2 2 .9%和 30 .4 %。

Investigation on pathogenic agents of sow reproductive obstacle in Jilin province

pig farms were investigated on pathogenic agents of sow reproductive obstacle in Changchun, Siping, Songyuan and Liaoyuan prefectures in Jilin province of China. 4 998 sows suffering from reproductive obstacle were investigated and clinically examined altogether. 1 040 serum samples from sows suffeing from reproductive obstacle and a few of boars were examined for antibodies. 106 stillborn fetus samples were examined in the laboratory, and 76 dead fetus samples out of the 106 samples were examined for antigens by the immune fluorescent test. Results showed that morbidity of sow suffering from reproductive obstacle was 19.83% in Jilin province, that the most frequently pathogenic agents of sow reproductive obstacle were pseudorabies virus (PRV), porcine parvovirus (PPV), classical swine fever virus (CSFV) and porcine reproductive and respiratory syndrome virus (PRRSV), that antibody positive rate of PRV, PPV, CSFV and PRRSV were 61.4%,53.7%,2.9% and 22.0% respectively,while the later two viruses were only individual incidence or co infection with PRV, and that antigen positive rate of PPR, PPVI , CSF and PRRS was 69.8%,35.3%,22.9% and 30.4% respectively.