摘要
目的分析物种差异与肠道形态及能量代谢的关系,阐明长爪沙鼠的能量需求。方法长爪沙鼠、SD大鼠、ICR小鼠各10只,分别单独饲养于代谢笼内,收集5 d动物24 h内的粪便、尿液。尿液及粪便经分别测量体积与重量后,送检尿能与粪能。收集结束后,所有动物称重,麻醉后腹主动脉采血致死,取动物肠道,测量肠长度。结果大鼠维持的消化能和代谢能分别为314.56 k J/d、314.55 k J/d,小鼠分别为10.608 k J/d、9.799 k J/d,沙鼠分别为99.828 k J/d、99.927 k J/d。大鼠每增加1 g体重需要的消化能和代谢能分别是19.273 k J和18.831 k J,小鼠分别是71.842 k J和72.390 k J,沙鼠分别是56.142 k J和55.965 k J。大、小鼠的消化道总长大于沙鼠,大鼠小肠最长,而沙鼠有较大的盲肠百分比。结论三种动物在肠道长度和能量需求方面有显著差异。
Objective To illuminate energy demands of Mongolian gerbil by analyze the diversity in intestinal morphology and the energy metabolism of different species. Methods 10 SD rats,10 ICR mice and 10 mongolian gerbils were feed individually in metabolic cages. Gather and measure the energy of their feces and urine in 24 h for 5days. Then,all the animals were weighed and anaesthetized,collect and measure the length of the intestine. Results Rats digestive energy and metabolic energy respectively are 314. 56 k J / d and 314. 55 k J / d,mice are 10. 608 k J / d and 9. 799 k J / d,gerbils are 99. 828 k J / d and 99. 927 k J / d. Rats digestive energy and metabolic energy used to increase body weight respectively are 19. 273 k J / g and 18. 831 k J / g,mice are 71. 842 k J / g and 72. 390 k J / g,gerbils are 56. 142 k J / g and55. 965 k J / g. In these animals,the length of gerbils digestive tract is the shortest,the length of rats small intestine is the longest,and the percentage of gerbils appendix is the largest. Conclusions There are significant differences in the length of the gut and energy needs.
出处
《中国比较医学杂志》
CAS
北大核心
2016年第1期37-41,共5页
Chinese Journal of Comparative Medicine
基金
科技支撑计划重点项目(2011BAI15B01)
浙江省科技计划项目(2013C37013
2013C37012)
关键词
能量需求
肠道形态
合理饲喂
食性
Energy demands
Intestinal morphology
Scientific feeding
Eating patterns
