CAJ | 학술논문

为了确定2种疫病感染情况下仔猪猪瘟疫苗的首免日龄,采用ELISA方法,测定了不同日龄仔猪的猪瘟母源抗体,并分析其消长规律.结果显示,隐性感染PRRSV的免疫猪瘟疫苗(6头份/头)母猪所产仔猪的猪瘟母源抗体阳性水平在10～14 d为100.0%(25/25),15～19 d为81.5%(22/27),20～24 d为77.8%(21/27),25～29 d为67.7%(21/31),30～34 d为58.6%(17/29),35～39 d为50.0%(16/32);而感染过SFV的猪场的母猪所产仔猪母源抗体阳性水平在5 d、10 d、15 d和20 d均为100.0%(20/20),至30 d抗体阳性水平骤降为80.0%(16/20).根据母源抗体消长规律,确定了隐性感染PRRSV的猪瘟疫苗免疫母猪所产仔猪的首免日龄为20～24 d;而感染过SFV猪场的母猪所产仔猪为30～35 d.
위료학정2충역병감염정황하자저저온역묘적수면일령,채용ELISA방법,측정료불동일령자저적저온모원항체,병분석기소장규률.결과현시,은성감염PRRSV적면역저온역묘(6두빈/두)모저소산자저적저온모원항체양성수평재10～14 d위100.0%(25/25),15～19 d위81.5%(22/27),20～24 d위77.8%(21/27),25～29 d위67.7%(21/31),30～34 d위58.6%(17/29),35～39 d위50.0%(16/32);이감염과SFV적저장적모저소산자저모원항체양성수평재5 d、10 d、15 d화20 d균위100.0%(20/20),지30 d항체양성수평취강위80.0%(16/20).근거모원항체소장규률,학정료은성감염PRRSV적저온역묘면역모저소산자저적수면일령위20～24 d;이감염과SFV저장적모저소산자저위30～35 d.
ELISA was used to determine maternal antibodies of piglets and analyze their dynamic changes, and confirm initial immunization age of the piglets of SF infected by 2 kinds of epidemics. The results showed that the neutralizing level of maternal antibody achieved 100.0% (25/25) in 10～14 days, followed by 81.5% (22/27), 77.8%(21/27), 67.7%(21/31), 58.6%(17/29), 50.0%(16/32) from sows infected with PRRSV and immunized 6 times of activated vaccine. It reached 100.0% (20/20) at 5～20 days and 80.0% (16/20) at 30 days from sows infected with SFV. 20～24 days old of initial immunity of the piglets infected by PRRSV, and 30～35 days by SFV were determined according to the dynamic changes of maternal antibodies.