摘要
在室内用转基因水稻Bt汕优63及其亲本杂交水稻汕优63稻米制备的小鼠人工饲料,分别在喂饲昆明种雄性小白鼠不同时间后测定其取食量、排粪量和营养效应指标。结果表明,小鼠在累积喂饲两种稻米制备的饲料4 d时的平均相对生长率(MRGR)、相对生长率(RGR)和相对消耗率(RCR)均显著高于其他累积喂饲时间(P<0.001)。不同水稻稻米制成的饲料对小鼠取食量、排粪量、平均相对生长率(P<0.001)和近似消化率(P<0.05)有显著的影响;不同喂饲时间对小鼠取食量、排粪量及其他营养效应指标均有显著的影响(P<0.001);二者之间的交互作用对小鼠取食量、排粪量、相对消耗率(P<0.001)和净转化率、近似消化率(P<0.05)有显著的影响。小鼠的相对生长率、毛转化率在分别喂饲两种水稻稻米制备的饲料不同时间后无显著的差异,净转化率在分别喂饲两种水稻米制备的饲料后除第4天外其他时间无显著差异。上述结果显示,转基因稻米制备的饲料对小型哺乳动物(如鼠类)的主要营养效应指标无明显影响。
In this experiment, the mouse artificial diets were produced by transgenic Bt rice cultivar ＂Shanyou 63＂ and conventional rice cultivar ＂Shanyou 63＂. The consumption, frass and food utilization of Kunming male mouse were studied after feeding with different days. The results showed that mean raletive growth rate （MRGR）, retative grouth rate（RGR） and relative consumption rate （RCR） in mouse after feeding on conventional rice cuhivar ＂Shanyou 63＂ by 4 days were significantly higher than those in other feeding times （P〈0.001）. The diet made of different rice showed significant effect on the mice in consumption, frass, MRGR （P〈0.001）and approximate digestibility （AD）（P〈0.05）.The feeding time also showed significant effect on the consumption, frass and all food utilization indices （P〈0.001）. The interactions between diet variety and feeding time also presented significant influence on the consumption, frass, RCR （P〈0.001）, efficiency of conversion of digested food （ECD） and AD（P〈0.05）. However, no significant difference was found in RGR, and efficiency of conversion of indigested food （ECI） of the male mouse between transgenic Bt rice and conventional rice diets after feeding with different days, which indicated that there was no evident influence on the main food utilization indices for small mammals, such as mouse, after feeding on the artificial diet of transgenic Bt rice.
出处
《湖北农业科学》
北大核心
2011年第19期4013-4017,共5页
Hubei Agricultural Sciences
基金
国家转基因生物新品种培育重大专项(2009ZX08011-013B)
关键词
转BT基因水稻
饲料
小鼠
营养效应
平均相对生长率
净转化率
transgenic Bt rice cuhivar
artificial diet
mouse
nutritional effects
mean relative growth rate
efficiency of conversion of digested food
