乌苏里貉生长发育规律研究及其生长曲线模型拟合

Growth Rule and Growth Curve Model Fit to Raccoon Dog

选取60只分窝乌苏里仔貉，按出生窝别、出生时间、性别、体重分为4组，生长期和冬毛期分别饲喂4种不同的试验E／粮，研究其生长发育规律，拟合其体重和体长生长模型。结果表明：乌苏里貉周平均日增重在8～12周龄和18～24周龄有2个高峰期（分别为40g／d和50g／d），体长生长速度在9～14周龄和20～22周龄有2个高峰期（分别为0．3cm／d和0．2cm／d）；体重和体长适宜生长曲线方程分别为：Y=241．47＋42．242X＋19．041X^2-0．399X^3（R^2=0．994），Y=9．517＋3．374X-0．067X^2（R^2=0．992）。

Sixty weaned raccoon dogs were divided randomly into four groups according to birthgroup, birthday, sex, body weight. They were fed four kinds of different trial diets during the period of growth and winter hair respectively. The objective of this research was to study growth rule and analyze growth model of the body weight and length of the raccoon dogs. The results showed that there were two peak stages during the period of 8 - 12 and 18 - 24 week for the weekly average daily gain of raccoon dogs （40 g/d and 50 g/d respectively）, the peak speeds of body length gain were during the period of 9 - 14 and 20 - 22 week（0.3 cm/d and 0.2 cm/d respectively）. The optimum growth curve equations of the body weight and length of raccoon dog were Y = 241.47 ＋ 42.242X ＋ 19.041X^2 - 0.399X^3 （ R^2 = 0.994）, Y = 9.517 ＋ 3.374X - 0.067X^2（ R^2 = 0.992）respectively.