Kay G, Pearson R A, Ouassat M
Centre for Tropical Veterinary Medicine, University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG.
Vet Rec. 2004 Jan 17;154(3):85-8. doi: 10.1136/vr.154.3.85.
During March 2001, 117 working mules, randomly chosen from four markets in Morocco, were weighed and a series of body measurements recorded; their age and body condition score were also recorded. Linear regression techniques were used to derive a 'best fit' equation for predicting liveweight from the other variables. For the working mules weighing between 131 and 391 kg the best prediction equation using two variables was: liveweight (kg) = -33 + 2.8 x heart girth (cm)+1.36 x length (cm). Other prediction equations available for estimating the liveweight of equidae were tested on the data, but in all cases they significantly overestimated the weights of the Moroccan mules.
2001年3月，从摩洛哥四个市场随机挑选了117头役用骡子，对它们进行称重并记录了一系列身体测量数据；还记录了它们的年龄和身体状况评分。使用线性回归技术得出了一个“最佳拟合”方程，用于根据其他变量预测活重。对于体重在131至391千克之间的役用骡子，使用两个变量的最佳预测方程为：活重（千克）=-33 + 2.8×胸围（厘米）+ 1.36×体长（厘米）。对可用于估计马科动物活重的其他预测方程进行了数据测试，但在所有情况下，这些方程都显著高估了摩洛哥骡子的体重。
