In order to estimate the prevalence of brucellosis in dairy goats in Shaanxi Province and to identify the potential risk factors for brucellosis infection on farms,228700 serum samples were collected from 813 dairy goat breeding units in 6 counties of Shaanxi Province.Rose Bengal Test(screening test)and Serum Agglutination Test(confirmatory test)were used for detection.Additionally,questionnaire surveys were conducted among 286 dairy goat breeding household.The infection status of Brucella and potential associated factors were determined via univariate and multivariate logistic regression analysis.The results showed that the individual and herd infection rates of brucellosis in dairy goats were 0.02％and 2.2％,respectively.The individual infection rates detected by brucella antibody in 4 counties ranged from 0.02％to 0.8％,and the herd infection rates ranged from 3.1％to 6.5％.There were statistically significant differences in the individual infection rates between Chencang District,Fengxiang Distrist and Yanliang District,Fuping County,respectively(P＜0.05),while there were no statistically differences in the herd infection rates among the 4 counties(P＞0.05).Drinking river water,a history of ewe abortion,lamb survival rate below 85％after weaning,and personnel engaging in slaughter and sales of sheep as secondary work were identified as potential risk factors for Brucella infection in dairy goat farms/households(P＜0.05).Introducing quarantine before importing of goats and disinfecting vehicles before entering the farm were identified as protective factors(P＜0.05).Multi-factor logistic regression equation:Logit[P(Y=1)]=-4.484+0.874X1+1.829X2-2.453X3+4.488X4-0.09X5+2.1X6-2.611X7+2.978X8 can be used to predict the risk of brucella infection in dairy goat farms.The results suggest that Longxian County and Qianyang County should focus on strengthening quarantine and supervision for transferred(incoming)goats,and conducting regularly monitoring high-risk processes and animals.Other four counties can use the same brucellosis monitoring and purification strategies,conducting whole-group testing for positive herds,and focusing on brucellosis monitoring and purification of dairy goats in breeding villages.Dairy goat farmers should pay attention to high-risk processes such as personnel and vehicle entry,water consumption,and improve quarantine measures for incoming goats,improve feeding management ability and biosecurity management levels,and effectively reduce the risk of brucellosis infection.This study provides a reference for the prevention and control of brucellosis in Shaanxi Province.
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万方数据
