Animal Health Service, PO Box 9, 7400 AA Deventer, The Netherlands.
Vet Rec. 2011 Nov 5;169(19):494. doi: 10.1136/vr.d4736. Epub 2011 Aug 18.
Two lungworm outbreaks in dairy herds were investigated in order to estimate the resulting economic costs. On the two farms, with 110 and 95 cows, total costs were estimated at €159 and €167 per cow, respectively. Overall, milk production reduced by 15 to 20 per cent during the outbreaks. Five cows died on one farm, while on the other farm seven cows died as a result of the lungworm outbreak. On one farm, 51.7 per cent of the total costs was due to reduced milk production and 33.1 per cent was due to disposal of dead animals. On the other farm, it was 36.3 and 50.9 per cent, respectively. The remaining 13 to 15 per cent of the total costs were due to extra inseminations, laboratory diagnosis and treatments. The history and development of the outbreaks are described. One lesson from these outbreaks is that recognising that potentially lungworm-naïve animals are to be introduced into the adult herd allows for timely measures (for example, vaccination) to prevent a lungworm outbreak.
为了估算由此产生的经济成本，对两例奶牛肺线虫病暴发进行了调查。在这两个拥有 110 头和 95 头牛的牛场中，每头牛的总成本分别估计为 159 欧元和 167 欧元。总体而言，暴发期间牛奶产量减少了 15%至 20%。一个牛场有 5 头牛死亡，而另一个牛场有 7 头牛因肺线虫病暴发而死亡。在一个牛场，总费用的 51.7%是由于牛奶产量下降，33.1%是由于处理死畜。在另一个牛场，这一比例分别为 36.3%和 50.9%。总费用的其余 13%至 15%是由于额外的配种、实验室诊断和治疗。描述了暴发的历史和发展。从这些暴发中得到的一个教训是，认识到有潜在肺线虫感染风险的动物将被引入成年牛群，这使得能够及时采取措施（例如接种疫苗）来预防肺线虫病暴发。
