The impact of Leptospira seropositivity on reproductive performance in sows in southern Viet Nam
The impact of Leptospira seropositivity on reproductive performance in sows in southern Viet Nam
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DOI：
10.1016/s0093-691x(02)00971-8
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发表时间：
2002-10-15
期刊：
影响因子：
2.8
通讯作者：
Magnusson, U
中科院分区：
文献类型：
--
作者：
Boqvist, S;Thu, HTV;Magnusson, U
在越南南部湄公河三角洲的母猪中进行了一项血清学调查，以调查钩端螺旋体血清学阳性与繁殖性能之间的关系。数据来自四个大型国有农场，共收集了339头处于哺乳期或妊娠期的母猪。秋季钩端螺旋体血清阳性率为32%，布拉迪斯拉发钩端螺旋体血清阳性率为29%，克氏钩端螺旋体血清阳性率为13%，黄疸出血热钩端螺旋体血清阳性率为27%，蓬特纳钩端螺旋体血清阳性率为5%，塔拉斯索夫河钩端螺旋体血清阳性率为13%。对断奶至使用天数（WST）、出生仔猪数、出生死亡仔猪数和出生虚弱仔猪数进行了评价。sv tarassovi血清阳性与每窝死亡仔猪增加0.8头相关（P = 0.06）， sv grip -伤寒血清阳性与WSI增加1天相关（P = 0.06）。繁殖能力与秋血吸虫、布拉迪斯拉发血吸虫、波莫纳血吸虫和黄疸出血热之间无显著关联。由此得出结论，钩端螺旋体血清阳性可能与母猪繁殖性能受损有关，即使在预期母猪高度免疫的地区也是如此。(C) 2002爱思唯尔科学有限公司版权所有。
A serologic survey was conducted among sows in the Mekong delta in southern Viet Nam to investigate associations between leptospiral seropositivity and reproductive performance. Data were collected from a total of 339 sows in lactation or gestation, from four large-scale state farms on three occasions. The seroprevalence for Leptospira interrogans serovar (sv) autumnalis was 32%, for L. interrogans sv bratislava 29%, for L. kirschneri sv grippotyphosa 13%, for L interrogans sv icterohaemorrhagiae 27%, for L interrogans sv pontona 5%, and for L. borgpetersenii sv tarassovi 13%. The reproductive parameters number of days from weaning to service (WST), number of piglets born, number of piglets born dead, and number of piglets born weak, were evaluated. Seropositivity for sv tarassovi was associated with 0.8 more dead piglets per litter (P = 0.06), and sv grippotyphosa with a 1 day longer WSI (P = 0.06). There were no significant associations between reproductive performance and sv autumnalis, sv bratislava, sv pomona, and sv icterohaemorrhagiae. It is concluded that seropositivity for Leptospira can be associated with impaired reproductive performance even in areas where a high degree of immunity among sows is expected. (C) 2002 Elsevier Science Inc. All rights reserved.