丹麦奥胡斯大学给育肥猪播放60-250Hz低频,每日4小时,持续4周。结果猪背膘厚减8%,肌内脂肪增11%,肉质更嫩。声学解释:低频激活交感神经系统,促进脂肪分解;同时增加肌肉毛细血管密度,糖原储存更均匀。屠宰后肉色鲜红,pH下降慢,滴水损失少。猪场把系统注册为“Sound Meat”,出口日本做高端烤猪肉,每公斤加价0.8美元,成为“听瘦的猪”。
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