蒙古沙鼠(Meriones unguiculatus)和金仓鼠(Mesocricetus auratus)全身电导率测定

René Weinandy, Rolf Gattermann
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引用次数: 5

摘要

采用无创全身电导率法(TOBEC)测定了蒙古沙鼠(Meriones unguiculatus)和金仓鼠(Mesocricetus auratus)的体成分。建立了基于胴体直接化学分析的回归模型,并定义了标定方程来预测这两个物种的无脂质量(FFM)和总体内水分(TBW)。沙鼠的FFM (g) = 0.20548 × TOBEC + 10.0224;TBW (g) = 0.14485 × TOBEC + 6.51824;金仓鼠:FFM (g) = 0.18043 × TOBEC + 18.5806;TBW (g) = 0.14817 × TOBEC + 4.50379。根据这些方程和各自的TOBEC值,分析了体成分。雄性金仓鼠的粗脂肪质量(CFM)和干体重(DBM)均高于雌性金仓鼠,雌性金仓鼠的FFM和TBW比例均高于雄性金仓鼠。雄性沙鼠CFM、DBM较高,绝对FFM和TBW均升高。与雌性金仓鼠一样,雌性沙鼠的FFM和TBW比例更高。结果讨论了这种非侵入性技术的有用性,它允许重复的个体测量身体成分。在评估身体状况和福利问题、雄性/雌性差异或评估季节影响和住房条件时,它有助于减少所需的动物数量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Total body electrical conductivity (TOBEC) measurements in Mongolian gerbils (Meriones unguiculatus) and golden hamsters (Mesocricetus auratus)

Body composition of adult Mongolian gerbils (Meriones unguiculatus) and golden hamsters (Mesocricetus auratus) was determined using the non-invasive measurement of the total body electrical conductivity (TOBEC). A regression model was developed based on direct chemical analysis of the carcass and calibration equations were defined to predict the fat-free mass (FFM) and the total body water (TBW) in these two species. The closest correlation was obtained by calculating a linear regression of FFM and TBW as a function of TOBEC: gerbils: FFM (g) = 0.20548 × TOBEC + 10.0224; TBW (g) = 0.14485 × TOBEC + 6.51824; golden hamsters: FFM (g) = 0.18043 × TOBEC + 18.5806; TBW (g) = 0.14817 × TOBEC + 4.50379. Based on these equations and the respective TOBEC values, the body composition was analysed. Male golden hamsters had a higher crude fat mass (CFM, obtained by substracting the FFM from the body mass) and a higher dried body mass (DBM, obtained by substracting the TBW from the body mass) than females, which had a higher percentage of FFM and TBW. In Mongolian gerbils, males had higher CFM, higher DBM and the absolute FFM and TBW was elevated. As in female golden hamsters, female gerbils had a higher percentage of FFM and TBW. Results are discussed in relation to the usefulness of this non-invasive technique, which allows repeated individual measurements of body composition. It helps to reduce the number of animals necessary when estimating body condition and welfare issues, male/female differences or for the evaluation of seasonal effects and housing conditions.

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