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Live Weight Estimation of Donkeys in Central México from Measurement of Thoracic Circumference

机译：从胸围测量墨西哥中部驴的活重

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摘要

Body measurements (length from nape of neck to the withers; height to withers; length from withers to tail root; length from shoulder to tuber ischii; thoracic circumference; umbilical circumference) were taken and correlated with live weight from 160 donkeys (mean ± standard deviation = 6 ± 2.6 years old) in Central México. The age was assessed from dentition. Sex of the donkeys was also recorded. Sex was an important factor of variation (p = 0.011). Live weight was estimated using two allometric models. Model 1: Live weight = β o × (thoracic circumference)β1. Model 2: Live weight = β o × (height to the withers) βl × (thoracic circumference) β2. Separate prediction equations were produced for males and females, plus one for the total sampled. The ‘best fit’ models, were those using thoracic circumference to predict the live weight. Males: live weight = 0.018576 × (thoracic circumference)1.84107 (R 2 = 0.9839). Females: live weight = 0.031255 × (thoracic circumference)1.72888 (R 2 = 0.9839). The equations derived to estimate the live weight of donkeys in Britain, Morocco and Zimbabwe were less satisfactory for use with donkeys from Central México because they overestimated the live weight.
机译：进行了身体测量（从颈项到枯萎的长度；到枯萎的高度；从枯萎到尾根的长度；从肩膀到块茎坐骨的长度；胸围；脐围），并将其与160只驴的活重相关联（平均值±标准）偏差= 6±2.6岁）在墨西哥中部。通过牙列来评估年龄。还记录了驴的性别。性别是差异的重要因素（p = 0.011）。使用两个异速测量模型估算活重。模型1：体重=βo ×（胸围）β1。模型2：体重=βo ×（凋谢的高度）βl×（胸围）β2。针对男性和女性生成了单独的预测方程式，另外对总采样方程式进行了预测。 “最合适”的模型是使用胸围预测活体重的模型。男性：活体重= 0.018576×（胸围）1.84107 （R 2 = 0.9839）。女性：活体重= 0.031255×（胸围）1.72888 （R 2 = 0.9839）。用于估算英国，摩洛哥和津巴布韦的驴的活重的公式不能令人满意地用于墨西哥中部的驴，因为它们高估了活重。

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  • 来源
    《Tropical Animal Health and Production》 |2005年第s1期|159-171|共13页
  • 作者

    A. S. de Aluja; G. Tapia Pérez; F. López; R. A. Pearson;

  • 作者单位

    Departamento de Patología Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autónoma de México;

    Departamento de Genética y Bioestadística Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autónoma de México;

    Departamento de Patología Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autónoma de México;

    Centre for Tropical Veterinary Medicine Division of Animal Health and Welfare Easter Bush Veterinary Centre University of Edinburgh;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    allometry; donkey; live weight prediction; México;

    机译：异速测量法;驴;活体重预测;墨西哥;

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