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Kennedy(1989)
進行豬的生長速率和背脂厚度之遺傳分析，在檢定站與場內檢定的豬，其性狀測定值間具遺傳相關。羅與黃(1995)認為活體測定背脂厚度之目的在於估測屠體瘦肉率，最後腰椎部位的屠體背中線背脂厚度與瘦肉量之體表型相關較其他二點背脂者為高，建議往單一測點方向去進行屠體瘦肉量估測。Akridge
et al. (1992)曾以屠體的導電性做為瘦肉量的估測法，暗示簡化屠體瘦肉量估測時間和人力，將有助於種豬瘦肉量之改良。因此，應儘快估算出固定體重的第五肋背脂厚度的矯正係數，以及第五肋背脂厚度和生長、繁殖和屠體等性狀的遺傳相關值，做為修正現行種豬的選拔指數之指標。
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