Vonnahme Jörg, Kreienbrock Lothar, grosse Beilage Elisabeth
Aussenstelle für Epidemiologie, Stiftung Tierärztliche Hochschule Hannover.
Berl Munch Tierarztl Wochenschr. 2007 Jan-Feb;120(1-2):61-6.
The study was performed with the aim to characterize seasonal variations on the Salmonella seroprevalence in gilts. Serological results from a total of 13,511 gilts were available for the analysis. The samples were taken from 11 nucleus herds, 19 suppliers and 46 breeding gilt rearing herds. In principle, it was planned to take 10 blood samples at monthly intervals from gilts five to six months of age. The overall seroprevalences of Salmonella were low in the herds of this study. The analysis of seasonal variation showed a statistically significantly lower seroprevalence during the summer quarter (July through September). In comparison to other studies in Germany it must be pointed out that the herds belonged to a single breeding company, which has a strong commitment to enhanced biosecurity. The marked seasonal variation in Salmonella seroprevalences should be taken into consideration in the classification of herds within the scope of monitoring programmes. Scoring of herds is meaningful only after regular sampling for at least one year. Further investigations considering management, housing and hygienic conditions are necessary to determine the factors leading to higher Salmonella seroprevalence in the winter.
本研究旨在描述后备母猪中沙门氏菌血清阳性率的季节性变化。共有13511头后备母猪的血清学结果可用于分析。样本取自11个核心种猪场、19个供应商和46个后备母猪饲养场。原则上，计划从5至6月龄的后备母猪每隔一个月采集10份血样。本研究中各猪场沙门氏菌的总体血清阳性率较低。季节性变化分析显示，夏季季度（7月至9月）血清阳性率在统计学上显著较低。与德国的其他研究相比，必须指出的是，这些猪场属于一家单一的育种公司，该公司大力致力于加强生物安全措施。在监测计划范围内对猪场进行分类时，应考虑沙门氏菌血清阳性率明显的季节性变化。只有在至少一年的定期采样后，对猪场进行评分才有意义。有必要进一步研究管理、饲养和卫生条件，以确定导致冬季沙门氏菌血清阳性率较高的因素。
