Investigation of the Protective effect of Porcine reproductive and respiration syndrome vaccine and Pathogen on Large scale pig farms in Shenyang
Geng Qinghua
Zhang Kan
Fu Haibin
Abstract：In order to comprehend the Protective effect of Porcine reproductive (PRRS) and respi-ration syndrome vaccine and its Pathogen on Large scale pig farms of Shen-yang city and surround-ing area, RT-PCR method was used to detect samples from sixteen towns in Shenyang, Dalian, Anshan and ect. The results showed that PRRS positive rate is 9.28% in 2011, 27.3% in 2012, 0.6% in the first six months of 2013 and the average positive rate is 12.1%. ELISA was used to detect the Pro-tective effect of the PRRS vaccine, 902 serum samples was tested from 5 Large scale pig farms in Shenyang, the results showed that Antibody qualification rate is 97.3% in 2011, 98.8% in 2012, 94.8% in 2013, Average qualification rate is 97.5%. The maternal antibody was monitored for 7 weeks in a pig farm, The results showed that the maternal antibody of PRRS was reached the maximum value on the seventh day, maintaining at the higher level until the 21th day, and then showed a de-clined trend.
Keywords：Porcine reproductive and respiration syndromeProtective effectPathogen
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 48-50 )