Davis D P, Moon R D
Department of Entomology, University of Minnesota, St. Paul 55108.
J Econ Entomol. 1990 Aug;83(4):1439-45. doi: 10.1093/jee/83.4.1439.
Effects of infestation by Sarcoptes scabiei (De Geer) on pruritus and other behaviors of pigs for 9-13 wks after weaning were evaluated. Regardless of the dose of mites inoculated, pigs fed ad lib. spent approximately 60% of their time at rest. Within their average day, pigs spent more time eating in morning and evening, were more active and pruritic at midday, and rested more and spent the least time drinking water at night. Mite infestations increased total activity and time spent scratching and rubbing. Infested pigs sprayed with water rubbed and scratched 4-10 times more frequently than those left undisturbed or disturbed by other means. Pigs receiving inoculating doses of 1,000 mites became more pruritic than pigs receiving 100 mites, and both groups developed more pruritus than non-infested control pigs.
评估了断奶后9至13周内，猪疥螨（De Geer）感染对猪瘙痒及其他行为的影响。无论接种螨虫的剂量如何，自由采食的猪约60%的时间处于休息状态。在一天中，猪在早晚进食时间较多，中午活动和瘙痒更为频繁，晚上休息时间更多且饮水时间最少。螨虫感染增加了猪的总活动量以及搔抓和摩擦的时间。用水喷洒感染猪，其摩擦和搔抓频率比未受干扰或通过其他方式干扰的猪高4至10倍。接种1000只螨虫的猪比接种100只螨虫的猪瘙痒更严重，且两组猪的瘙痒程度均高于未感染的对照猪。
