To research hair growth regularity of short-hair rabbit,adult short-hair rabbit was used as the experimental object. From the 4th to the 11th week,the back hair was collected once a week by plucking,the length of coarse,fine and awn was measured,and the growth curves of three types of hair were simulated by growth curve models. The results showed that the length of the three kinds of hairs increased significantly (P<0.05) with the age during the period of the 4th-6th week. There was no significant difference(P >0.05)in hair length during the 6th-11th week,except the coarse hair length between the 7th week and the 11th week. The fine length during the 6th-9th week showed that the hair almost had no growth. The growth curve fitting results showed that the Logistic growth curve model was better than the Von Bertalanffy model. The growth inflection point were 3.69,3.82,4.07 weeks for coarse,fine and awn,respectively,while the length inflection points of three types hair were 17.58,13.4, 16.21 cm respectively. The results can provide a reference for the further study of rabbit hair growth ,hair follicle development and apoptosis.%以成年短毛兔为试验对象,通过拔毛构建新的兔毛生长周期,从第4~11周,每周采集一次背部毛样,用直尺测定不同时期粗毛、细毛和两型毛的长度,通过生长曲线模型对兔毛生长情况进行了模拟,并对短毛兔兔毛的生长规律进行了研究.结果表明:试验兔第4、5、6周,3种毛型的长度都依周次显著增长(P<0.05),而第6~11周,除细毛第7周和第11周、粗毛第6周和第9周毛长差异显著外(P<0.05),兔毛长度变化均不显著(P>0.05),这说明短毛兔兔毛在第6周后基本停止生长.生长曲线拟合结果表明,Logistic模型最为符合短毛兔兔毛生长的实际情况,粗毛、细毛和两型毛的拐点周龄分别为3.69、3.82和4.07周,拐点毛长分别为17.58、13.40和16.21 cm,说明短毛兔兔毛生长速度在第4周左右开始变慢.研究结果可为兔毛生长规律和毛囊发育及凋亡规律的研究提供参考.
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