钩端螺旋体病对巴西母猪繁殖性能的影响。

Influence of leptospirosis on reproductive performance of sows in Brazil.

作者信息

Ramos Antonio C F, Souza Guilherme N, Lilenbaum Walter

机构信息

Veterinary Bacteriology Laboratory, Department of Microbiology and Parasitology, Universidade Federal Fluminense, 24210-130 Niterói, RJ, Brazil.

出版信息

Theriogenology. 2006 Sep 1;66(4):1021-5. doi: 10.1016/j.theriogenology.2005.08.028. Epub 2006 Apr 3.

DOI:10.1016/j.theriogenology.2005.08.028

PMID:16584764

Abstract

The purpose of this study was to investigate the association between seropositivity for the most frequent Leptospira serovars and reproductive losses in sows in Brazil. Serum samples from 351 sows from 18 herds (in the state of Rio de Janeiro, Brazil) with low reproductive efficiency were tested (microscopic agglutination) for antibodies against serovars of Leptospira. Antibodies were detected in serum samples of 66.1% of all sows, most frequently serovar icterohaemorrhagiae (43.1%), followed by pomona (18.1%) and tarassovi (9.9%). Seroreactivity to icterohaemorrhagiae and pomona were associated (P<0.05) with impaired reproductive performance (and substantial economic loss). Seroreactivity for pomona was associated (P<0.05) with stillborn piglets and mummified fetuses, whereas seroreactivity to icterohaemorrhagiae was associated (P<0.05) with the number of piglets born dead.

摘要

本研究的目的是调查巴西母猪中最常见钩端螺旋体血清型的血清阳性与繁殖损失之间的关联。对来自巴西里约热内卢州18个繁殖效率低下猪群的351头母猪的血清样本进行检测（显微镜凝集试验），以检测针对钩端螺旋体血清型的抗体。在所有母猪的血清样本中，66.1%检测到抗体，最常见的血清型是出血性黄疸型（43.1%），其次是波摩那型（18.1%）和塔拉索夫型（9.9%）。对出血性黄疸型和波摩那型的血清反应性与繁殖性能受损（以及巨大的经济损失）相关（P<0.05）。对波摩那型的血清反应性与死产仔猪和木乃伊化胎儿相关（P<0.05），而对出血性黄疸型的血清反应性与出生死亡仔猪数量相关（P<0.05）。