不同周龄、性别对SJ5-SPF鸡主要脏器系数、肠道长度和体尺的影响  

Effects of different weeks of age and sex on the main organ coefficients,intestinal length and body size of SJ5-SPF chickens

作　　者：赵丽丽 韩凌霞[2] 于海波[2] 刘志涛[1] 李淑兰[1] ZHAO Lili;HAN Lingxia;YU Haibo;LIU Zhitao;LI Shulan(School of Life Sciences and Technology,Harbin Normal University,Harbin 150025,China;Laboratory Animal Center of Harbin Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Harbin 150001)

机构地区：[1]哈尔滨师范大学生命科学与技术学院,哈尔滨150025 [2]中国农业科学院哈尔滨兽医研究所实验动物中心,哈尔滨150001

出　　处：《中国比较医学杂志》2018年第3期67-71,共5页Chinese Journal of Comparative Medicine

基　　金：黑龙江省应用技术研究与开发计划项目(编号:PC13S07)

摘　　要：目的分析不同周龄SJ5-SPF鸡脏器系数、肠道长度和体尺变化趋势及性别差异,为实验动物性别选择提供实验数据。方法选用4周、20周、25周和40周SJ5-SPF鸡,分别测定体重、15个主要脏器重量、5个主要肠道长度和6个主要体尺,计算脏器系数,并对各周龄雌、雄SJ5-SPF鸡体重、脏器系数、肠道长度和体尺进行比较。结果体重在不同周龄雌雄之间差异均有显著性(P<0.01),所测得的脏器系数各周龄雌、雄之间均存在不同程度差异;在肠道长度中,空回肠和直肠在以上四个周龄中雌雄之间差异无显著性,其余肠道长度在部分周龄雌、雄之间有明显差异。在所测定的体尺中,体长、胫长、骨盆宽、胸深和胸宽雌、雄之间在上述四个周龄中有2个或3个周龄存在明显差异。结论周龄和性别对SJ5-SPF鸡的脏器系数、肠道长度和体尺都有影响。Objective To analyze the changes and gender differences of organ coefficients,intestinal length and body size of SJ5-SPF chickens at different weeks of age,and to provide experimental data for the sex selection of laboratory chickens.Methods The body weight,the weight of 15 main organs,and length of 5 main segments of intestine and the 6 main parameters of body size of SJ5-SPF chickens at the age of 4,20,25 and 40 weeks were measured,respectively,and the organ coefficients were calculated.In addition,the gender differences in body weights,organ coefficients,intestinal lengths and body sizes between the female and male SJ5-SPF chickens at the four different weeks of age were compared,respectively.Results There were significant differences in body weights between the male and female SJ5-SPF chickens at each of the four different weeks of age(P<0.01).The organ coefficients varied between females and males to different extents at different weeks of age.As for the intestinal length,there were no significant differences in the length of jejunum and ileum as well as rectum between the male and female chickens,while the length of duodenum,left cecum and right cecum showed gender differences at some of the four different weeks of age.During the determination of body size,there were gender differences in body length,shank length,pelvic width,chest depth and chest width at two or three of the four different weeks of age.Conclusions The organ coefficients,intestinal length and body size of SJ5-SPF chickens are affected by both their age and gender.

关 键 词：脏器系数 肠道长度 体尺 SJ5-SPF鸡 

分 类 号：R-33[医药卫生]