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Estimation of the liveweight of working mules in Morocco from their body measurements
  1. G. Kay, BVM&S, MRCVS1,
  2. R. A. Pearson, BSc, PhD2 and
  3. M. Ouassat, DVM, PhD3
  1. 1 41, Résidence Zohra, Harhoura, 12000 Temara, Morocco
  2. 2 Centre for Tropical Veterinary Medicine, University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG
  3. 3 Département d'Anatomie, Institut Agronomique et Vétérinaire Hassan II, Rabat, Morocco

Abstract

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 × heart girth (cm)+1−36 × 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.

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