[size=font-size: 7.5pt,7.5pt]类圆线虫病是由兰氏类圆线虫寄生在猪小肠所引起，多流行于雨季和夏季，猪圈卫生不良且潮湿时更普遍。[size=font-size: 7.5pt,7.5pt]
1[size=font-size: 7.5pt,7.5pt]月龄左右奶猪感染率高，[size=font-size: 7.5pt,7.5pt]
2~3[size=font-size: 7.5pt,7.5pt]个月的仔猪逐渐减少，春季仔猪较秋产的感染严重，常是从猪舍的土壤中经皮肤感染，和从母猪被污染的奶头经口感染。幼虫寄生于仔猪肺部，常引起湿疹、支气管炎、肺炎和胸膜炎。大量寄生时，小肠充血、出血和溃疡；患猪呕吐、腹痛、消瘦、贫血，最后因极度衰弱而死。除结合年龄、卫生情况、流行病学因素和临床症状进行分析外，须检查刚排出的新鲜粪便，发现虫卵方可确诊。[size=font-size: 7.5pt,7.5pt]
[size=font-size: 7.5pt,7.5pt]预防：保持猪舍及场地的干燥、清洁，经常用石灰乳消毒地面和用具；经常检查、及时治疗怀孕母猪和仔猪，病猪和健康猪分开饲养；带奶母猪的奶头要经常消毒清洗。[size=font-size: 7.5pt,7.5pt]
[size=font-size: 7.5pt,7.5pt]治疗：（[size=font-size: 7.5pt,7.5pt]
1[size=font-size: 7.5pt,7.5pt]）龙胆紫，每头猪[size=font-size: 7.5pt,7.5pt]
1[size=font-size: 7.5pt,7.5pt]次给予[size=font-size: 7.5pt,7.5pt]
0.1[size=font-size: 7.5pt,7.5pt]克，溶于水中喂服。[size=font-size: 7.5pt,7.5pt]
1[size=font-size: 7.5pt,7.5pt]天喂[size=font-size: 7.5pt,7.5pt]
3[size=font-size: 7.5pt,7.5pt]次，连用[size=font-size: 7.5pt,7.5pt]
2[size=font-size: 7.5pt,7.5pt]天。[size=font-size: 7.5pt,7.5pt]
[size=font-size: 7.5pt,7.5pt]（[size=font-size: 7.5pt,7.5pt]
2[size=font-size: 7.5pt,7.5pt]）左旋咪唑，按每千克体重[size=font-size: 7.5pt,7.5pt]
10[size=font-size: 7.5pt,7.5pt]毫克，一次口服或注射。[size=font-size: 7.5pt,7.5pt]
[size=font-size: 7.5pt,7.5pt]（[size=font-size: 7.5pt,7.5pt]
3[size=font-size: 7.5pt,7.5pt]）噻苯咪唑，每千克体重[size=font-size: 7.5pt,7.5pt]
50[size=font-size: 7.5pt,7.5pt]毫克拌入饲料投服，可驱出全部虫体，或按饲料量[size=font-size: 7.5pt,7.5pt]
0.01%[size=font-size: 7.5pt,7.5pt]加入（[size=font-size: 7.5pt,7.5pt]
100[size=font-size: 7.5pt,7.5pt]斤饲料加[size=font-size: 7.5pt,7.5pt]
10[size=font-size: 7.5pt,7.5pt]克），连用[size=font-size: 7.5pt,7.5pt]
14[size=font-size: 7.5pt,7.5pt]天，对感染严重的猪有较佳疗效。驱虫率可达[size=font-size: 7.5pt,7.5pt]
100%.[size=font-size:9.0pt,9.0pt]
http://www.kangdf.cn/ [size=font-size:9.0pt,9.0pt]加我的微信/QQ:1780532045，送<<[size=font-size:9.0pt,9.0pt]规模猪场的设计与管理>>[size=font-size:9.0pt,9.0pt]电子书，一起讨论交流猪病。[size=font-size: 7.5pt,7.5pt]
