母猪繁殖障碍征的病因学研究

某猪场一批初产母猪发生流产、早产、死胎、死仔和木乃伊胎为主要表现的繁殖障碍征。调查发现繁殖障碍占调查胎数的 ５１７％ ，其中早产占 １０８％ ，一窝中部分死胎（仔）占 ６９６％ ，全窝死亡占 １９６％ 。在因繁殖障碍损失的胎、仔数中，死胎占６９７％ ，产后即死占 ２４９％ ，木乃伊和畸形占５４％ 。血清学检测结果显示：呼吸和繁殖障碍综合征、流行性乙型脑炎和布鲁氏菌病为阴性而细小病毒为阳性，故诊断为细小病毒感染所致。

Etiology of Breeding Gilt Rtproduction Syndrome

In a breeding sow farm,up to 51.7% gilt occurred reproductive syndrome characterized by 10.8% premature delibery and 69.6% stillbirth in disorder gilt,69.6% stillbirth,24.9% dead immediately after birth and 5.4% mummy or deformity in the loss piglets or fetuses. Serological surveillances on the disorder gilt revealed negative antibodies to porcine reproductive and respiratory syndrome virus,Japanese encephalitis virus and brucella while positive to porcine parvovirus(PPV).Therefore,the gilt reproductive syndrome was most likely caused by PPV in this farm.