陕西人工养殖乌苏里貉繁殖参数的研究

Studies on the production paranetres of racoon dog In shaanxi

通过对陕西省动物研究所试验基地1987～1996年间乌苏里貉的繁殖资料统计分析，结果表明：乌苏里貉在陕西的配种期为2月5日至3月28日，经产母貉配种旺期为2月中下旬；初产母貉配种旺期为2月下旬至3月上旬。母貉受配次数以3次，采取单公交配为好。胎产仔数5～9只。妊娠时间59～63天，平均60天。公貉在整个配种期可交配3～5只母貉。每殖年限以2～3年为最好，4年以后繁殖力下降。

BY mothods of biostatisties,the producing information of racoon dog are anaiysed in Experiment Base of Shaanx Institute of Zooiogy between 1991 to 1995. In generai: The mating period of racoon dog is from 5,February to 28, March:when the femaie racoon dog was born,the main mating period isfrom the second and last tem days of Februauy;When the femaie racoon dog wasrit born,the main mating period is the end of February to the first ten days of March. The best matimg typesis sing le male three times mabing,The numher of single fetus is 5 to 9,the period of pregrancy is 59 days to 63 days,the average is 60days. The male raccoon dog can be mating with number of 3 to 5 female raccoon dog in tho whole mating period,The best production life is 2to 3 years. 4 years ago,the production capacity is fall.