School of Veterinary Science, University of Liverpool, Neston, Wirral, UK.
J Anim Physiol Anim Nutr (Berl). 2011 Jun;95(3):368-73. doi: 10.1111/j.1439-0396.2010.01063.x. Epub 2010 Oct 29.
Many pet cats and dogs are fed dry extruded kibbled food by measuring cup, yet the precision and accuracy of this feeding strategy is not known. Over 12 studies, we assessed precision and accuracy of weighing out food portions, of various dry kibbled foods, by measuring cup. Poor precision was noted in all studies, with intra- and inter-subject coefficients of variation ranging from 2 to 13% and 2 to 28% respectively. Variable accuracy was also noted, which ranged from an 18% under-estimate to an 80% over-estimate in portion size. No specific factors were associated with imprecision, but the degree of inaccuracy was negatively associated with portion size (R = -0.67, p = 0.022), and positively associated with the number of subjects participating in the study (R = 0.60, p = 0.048). This is the first study to document imprecision and inaccuracy of using measuring cups to estimate portions of extruded dry kibbled food. Over time, such errors could contribute to insidious weight gain in companion animals, potentially contributing to the development of obesity. Imprecision in measuring food portions could also contribute to failure of weight management programmes for obese animals.
许多宠物猫和狗通过量杯来喂食干膨化颗粒状食物，但这种喂养策略的精确性和准确性尚不清楚。在超过 12 项研究中，我们通过量杯评估了各种干膨化颗粒状食物的称重食物部分的精确性和准确性。所有研究均显示出较差的精度，个体内和个体间的变异系数分别为 2%至 13%和 2%至 28%。还注意到可变的准确性，部分大小的估计值从低估 18%到高估 80%不等。没有特定的因素与不精确性相关，但不准确的程度与部分大小呈负相关（R = -0.67，p = 0.022），并且与参与研究的受试者数量呈正相关（R = 0.60，p = 0.048）。这是第一项记录使用量杯估计膨化干颗粒状食物部分的不精确性和不准确性的研究。随着时间的推移，这些错误可能会导致伴侣动物逐渐增重，从而导致肥胖的发生。测量食物部分的不精确性也可能导致肥胖动物的体重管理计划失败。
