Heat-treated rapeseed was supplemented to indoor fed yaks in winter to test the effect on dry matter intake (DMI), body mass change, and meat quality. Sixteen 3-year-old yak steers (124 ± 15.3 kg) were divided randomly into two groups and were offered either heat-treated rapeseed (HTR) or rapeseed meal (CONT). The yaks were allowed 14 days for adjustment and measurements were made over 120 d. There was no difference in DMI between groups (p = 0.67), but average daily gain tended to be higher (p < 0.056) and feed to gain ratio tended to be lower (p = 0.050) in HTR than in CONT yaks. Meat from HTR yaks was more tender (p = 0.006), had higher intramuscular fat (p = 0.013), and had lower cholesterol content (p = 0.009) than from CONT yaks. In addition, the atherogenic index was lower (0.37 vs. 0.43; p = 0.049), the PUFA:SFA ratio was higher (0.55 vs. 0.37; p = 0.049), and the n-6:n-3 (n-6 PUFA to n-3 PUFA) ratio was lower (2.76 vs. 4.78; p = 0.003) in HTR than in CONT yaks, which all favoured the HTR yaks. Meat from HTR yaks met human health standards of a PUFA:SFA ratio of above 0.4 and n-6:n-3 ratio of less than 4, whereas meat from CONT yaks just missed these standards.

中文翻译：

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在heat牛的饮食中添加经过热处理的油菜籽可改善肉的生长性能，嫩度和营养品质。

冬季，将热处理过的油菜籽添加到室内饲养的ks牛中，以测试其对干物质摄入量（DMI），体重变化和肉质的影响。将16只3岁大的牛ste牛（124±15.3公斤）随机分为两组，并提供热处理的菜籽（HTR）或菜籽粕（CONT）。使牛适应14天，并在120 d内进行测量。两组之间的DMI没有差异（p = 0.67），但与CONT than牛相比，HTR的平均日增重往往更高（p <0.056），饲料增重比往往更低（p = 0.050）。与CONT ya牛相比，HTR ya牛的肉更嫩（p = 0.006），肌肉内脂肪（p = 0.013）和胆固醇含量较低（p = 0.009）。此外，动脉粥样硬化指数较低（0.37对0.43； p = 0.049），PUFA：SFA比较高（0。55比0.37；p = 0.049），并且HTR中的n-6：n-3（n-6 PUFA与n-3 PUFA）比（CONT牛）更低（2.76 vs. 4.78； p = 0.003），均偏爱HTR牛 来自HTR ya牛的肉满足人类健康标准，PUFA：SFA比率高于0.4，n-6：n-3比率小于4，而来自CONT ya牛的肉则未达到这些标准。