Lumeij J T, Hendriks H, Timmers A
Department of Avian and Exotic Animal Medicine, Utrecht University Small Animal Clinic, The Netherlands.
Vet Q. 1989 Jan;11(1):51-5. doi: 10.1080/01652176.1989.9694196.
During the hunting season 1986-1987, 2859 gizzards from mallards shot in the Netherlands were collected. Gizzards were selected radiographically and examined visually for ingested lead shot. The 95% confidence interval of the prevalence of lead shot ingestion was calculated to be 1.7 to 2.9%. In some gizzards a large number of lead shot (12-16) were seen. This is an indication for locally heavily contaminated areas. Especially places where mallards are attracted for hunting purposes, by daily feeding of corn, predispose these birds to lead poisoning. A ban with regard to these hunting practices will probably drastically reduce the prevalence of lead shot ingestion. A change from lead shot to steel shot will solve the problem completely.
在1986 - 1987年狩猎季节期间,收集了在荷兰射杀的2859只绿头鸭的砂囊。通过X光检查挑选出砂囊,并对其中摄入的铅弹进行目视检查。计算得出铅弹摄入率的95%置信区间为1.7%至2.9%。在一些砂囊中发现了大量铅弹(12 - 16颗)。这表明存在局部严重污染区域。特别是那些通过每日投喂玉米吸引绿头鸭以供狩猎的地方,会使这些鸟类易患铅中毒。禁止这些狩猎行为可能会大幅降低铅弹摄入率。从铅弹改用钢弹将完全解决该问题。