Leontides L S, Grafanakis E, Genigeorgis C
Laboratory of Epidemiology and Economics of Animal Production, School of Veterinary Medicine, University of Thessaly, 43100 Karditsa, Greece.
Epidemiol Infect. 2003 Aug;131(1):599-606. doi: 10.1017/s0950268803008732.
Blood samples were taken from 50 finishing pigs at 90-105 kg in each of 59 randomly selected farrow-to-finish herds. The sera were tested for antibodies to Salmonella enterica by the Danish mix-ELISA. Samples with an optical density of > 10% were considered to be positive. Associations between the odds of seropositivity of pigs and possible risk factors were evaluated in multivariable logistic regression models. The results of the analysis indicated that pigs fed non-pelleted dry or wet ration had 11 (P = 0.0004) or 9 (P = 0.02) times, respectively, lower odds of seropositivity than those fed pelleted ration. The risk of seropositivity was 4 (P = 0.0006) times higher in pigs fed a combination of chlortetracycline, procaine penicillin and sulphamethazine during fattening than in those fed an approved growth promotor or a probiotic.
在59个随机选择的从产仔到育肥的猪群中，从每群中选取50头体重90 - 105千克的育肥猪采集血样。采用丹麦混合酶联免疫吸附测定法（ELISA）检测血清中针对肠炎沙门氏菌的抗体。光密度> 10%的样本被视为阳性。在多变量逻辑回归模型中评估猪血清阳性几率与可能的风险因素之间的关联。分析结果表明，与饲喂颗粒料的猪相比，饲喂非颗粒干料或湿料的猪血清阳性几率分别低11倍（P = 0.0004）或9倍（P = 0.02）。育肥期饲喂金霉素、普鲁卡因青霉素和磺胺二甲嘧啶组合饲料的猪血清阳性风险比饲喂批准的生长促进剂或益生菌的猪高4倍（P = 0.0006）。
