Study on Growth and Decline Law of Contagious Pleuro-pneumonia in Piglets  

作　　者：Yan ZHANG Hailong LIU Zhemin LIN Zongxi CAO Shuyi TAN 

机构地区：[1]Institute of Animal Husbandry and Veterinary Medicine,Hainan Academy of Agricultural Sciences,Haikou 571100,China [2]Hainan Key Laboratory for Tropical Animal Breeding and Disease Research,Haikou 571100,China

出　　处：《Agricultural Biotechnology》2018年第5期116-118,共3页农业生物技术（英文版）

基　　金：Supported by National Natural Science Foundation of China(31560696);Development Fund for Scientific Research Institutes in Hainan Province(KYYS-2014-32);Special Fund for Integration of Production,Learning and Research of Hainan Province(cxy20150008)

摘　　要：In order to establish the immune procedure for Actinobacillus pleuropneumonia and to determine the date for the first immunization on piglets, the growth and decline law of A. pleuropneumonia material antibodies in the piglets borne by cows inoculated with A. pleuropneumonia vaccines （type I, II, and VII） before delivery was detected. The results showed that type I, II, and VII maternal antibodies in piglets decreased gradually with the age growing overall, and was at the critical protection value at the ages of 42-50 days （type I） and 28 days （type VII）, lower than the quantification rate; and the antibodies all turned to be negative until the ages of 70 days （type I）, 60 days （type VII） and 35 days （type II）. The first immunization should be carried out at the age of 42-50 days using type I A. pleuropneumonia vaccine, and at the age of 28 days using type VII A. pleuropneumonia vaccine. However, type II A. pleuropneumonia maternal antibody had lower level and positive rate and could not well protect piglets, so the various A. pleuropneumonia vaccines differed in the date for the first immunization. In order to achieve a better immunization effect, A. pleuropneumonia vaccines with different valences should be further researched and developed.In order to establish the immune procedure for Actinobacillus pleuropneumonia and to determine the date for the first immunization on piglets, the growth and decline law of A. pleuropneumonia material antibodies in the piglets borne by cows inoculated with A. pleuropneumonia vaccines （type I, II, and VII） before delivery was detected. The results showed that type I, II, and VII maternal antibodies in piglets decreased gradually with the age growing overall, and was at the critical protection value at the ages of 42-50 days （type I） and 28 days （type VII）, lower than the quantification rate; and the antibodies all turned to be negative until the ages of 70 days （type I）, 60 days （type VII） and 35 days （type II）. The first immunization should be carried out at the age of 42-50 days using type I A. pleuropneumonia vaccine, and at the age of 28 days using type VII A. pleuropneumonia vaccine. However, type II A. pleuropneumonia maternal antibody had lower level and positive rate and could not well protect piglets, so the various A. pleuropneumonia vaccines differed in the date for the first immunization. In order to achieve a better immunization effect, A. pleuropneumonia vaccines with different valences should be further researched and developed.

关 键 词：Porcine contagious pleuropneumonia Maternal antibody Growth and decline law PIGLETS 

分 类 号：S858.28[农业科学—临床兽医学] S828.5[农业科学—兽医学]