论文部分内容阅读
１９９０～１９９２年室内饲养黄毛鼠，对雌雄成体分别进行人工催情、促排卵及配对饲养，妊娠后定期解剖雌鼠，测定其胚胎长度及胚胎重量。根据胚胎长度与胚龄和胚胎重量与胚龄的图形，进行一次函数、二次函数的回归分析，建立黄毛鼠产仔高峰期预测数学模型。同时依据黄毛鼠个体不同发育阶段历期，预测幼鼠加入种群的数量高峰期，以及黄毛鼠暴食出现期。１９９３年春、秋两季黄毛鼠产仔高峰期预测值，经实地挖鼠洞捕鼠检验，预测值与检验值相符。
During 1990-1992, the rodents were kept in the house, artificial aphrodisiac, ovulation induction and paired feeding were conducted respectively on male and female adults. The female rats were anatomized regularly after pregnancy and the embryo length and embryo weight were measured. According to the graph of embryo length, embryo age, embryo weight and embryo age, a linear regression analysis of function and quadratic function was used to establish the mathematical model for the prediction of the peak of litter size. At the same time, according to the different developmental stages of rodents, the number of juveniles added to the population and the appearance of stuttering rats were predicted. The predicted value of the peak of the litter size in the spring and autumn of 1993 was compared with that of the test value by the rat-trapping test on the digging-hole in the field.