关键词: 畜禽养殖场, 害鼠, 种群动态

Abstract:

Objective To investigate the major species of rodent pests in the livestock and poultry farms (pig farms, cattle farms, and chicken farms) in Beijing, China and the seasonal population variations in the rodent pests, and to provide a reference for rodent pest control. Methods The species and density of rodent pests were monitored monthly from August 2010 to July 2011 in 9 livestock and poultry farms in Fangshan district, Pinggu district, and Shunyi district, Beijing. In each farm, traps baited with peanuts were set to capture rodent pests at night. Results There were 21 600 trap-times throughout the year, and 236 rodents including Mus musculus and Rattus norvegicus were captured. The farms were affected by rodent pests more seriously in autumn (September to November) and winter (December to February) than in other seasons, and 54.4% and 31.6% of all rodent pests were captured in autumn and winter, respectively; the highest population density of rodents was seen in October. Throughout the year, there was alternate population variation between M. musculus and R. norvegicus; the sex ratios of M. musculus and R. norvegicus populations were 1.63 and 0.71, respectively. Conclusion Autumn (September to November) is the key period for rodent pest control in the livestock and poultry farms in Beijing.

Key words: Livestock and poultry farm, Rodent pest, Population variation