【摘要】 本文根据PPA-ELISA测定的猪瘟弱毒抗体OD值来决定猪瘟免疫程序.配种前母猪接种猪瘟细胞苗2头剂(300兔感量),到产仔后哺乳期母猪体内抗体OD值平均为0.56,其仔猪3、10、15、20、30、40日龄的母源抗体OD值分别为0.34、0.30、0.25、0.21、0.18、0.15.20日龄接种2头剂猪瘟细胞苗,其OD值在30、40、50、60、70日龄时分别为0.32、0.34、0.35、0.29、0.25.在断乳后60日龄左右接种2头剂,到70、80、100、130、160、210日龄时的OD值分别为0.368、0.432、0.397、0.407、0.409、0.424.至出栏不再接种.后备种猪配种前进行第三次接种2头剂,以后每半年接种一次.更多还原

【Abstract】 This paper describes a new immunization program of hog cholera, which was determined by OD value of PPA-ELISA test. Each sow was inoculated intramuscularly with double dose of hog cholera cell vaccine before breeding. The average OD value of antibody in the sowbodies was 0. 56 during lactation, and the OD value for maternal antibody of their piglets were 0. 34,0. 30,0. 25,0. 21,0.18, and 0. 15 at 3,10,15,20, 30, and 40-day-old, respectively. Inoculation of piglets of 20-day-old using double dose of hog cholera cell vaccine resulted in OD value of 0. 32,0. 34,0. 35,0. 29,and 0. 25 at their 30, 40, 50, 60, and 70-day-old, respectively, and inoculation of piglets of 60-day-old showed OD values of 0. 368,0. 432,0. 397,0. 407,0. 409, and 0. 424 at their 70,80,100,130,160, and 210-day-old, respectively, which protected the piglets against hog cholera infection until they became full-grown and ready for slaughter. But it is necessary for the breeding swine to be inoculated further before breeding and every half a year thereafter.更多还原