舍饲型合作猪胴体品质性状相关性分析

摘要

Four intervals of slaughter weight were used to study carcass traits for Hezuo pig raised in piggery. The results indicated that Ham fatness was ideal and meat performance was high from 25 kilograms to 30 kilo-grams.Its lean percentage was 59.62 percent and dressing percentage was 66.315 percent.Thin skin (0.5 cm),low back fat thickness(0.797 cm) and large eye muscle area(16.15 cm 2) were its characters.So it belonged to a minia-ture kind of excellent lean-type pig.Slaughter weight and eye muscle area,slaughter weight and carcass weight, carcass weight and slaughter rate,carcass weight and eye muscle area showed extremely significant positive cor-relation (P<0.01);slaughter weight with slaughter rate,back fat thickness and the rate of bone;the carcass weight with back fat thickness and the rate of bone;eye muscle area the rate of bone lean and meat percentage;lean meat percentage and skin rate were significantly positive correlative (P<0.05);back fat thickness and lean per-centage,ham percentage and the rate of fat,lean meat percentage and bone percentage showed significantly nega-tive correlation(P<0.05).%选择4个屠宰体重区间对舍饲型合作猪胴体品质进行了研究。结果表明：25~30 kg屠宰，后腿丰满度理想，产肉性能高，瘦肉率59.62%，屠宰率66.315%，具有皮薄（0.5 cm）、背膘薄（0.797 cm）、眼肌面积大（16.15 cm2）的特点，属于优良的瘦肉型小型猪。宰前活重与胴体重、眼肌面积，胴体重与屠宰率、眼肌面积呈极显著正相关（P＜0.01）；宰前活重与屠宰率、背膘厚、骨率，胴体重与背膘厚、骨率，屠宰率与眼肌面积，背膘厚与眼肌面积，皮厚与后腿比例，眼肌面积与瘦肉率、骨率，瘦肉率与皮率呈显著正相关（P＜0.05）；背膘厚与瘦肉率，后腿比例与脂率，瘦肉率与骨率存在显著负相关（P＜0.05）。