We sought to determine the impact of breed and finishing ration that reduces the saturated fat (SFA) content of beef on SFA intake (%E) in adults. Using National Health and Nutrition Examination Surveys (2001–2016), we replaced the current fatty acid profile of beef with that from two breeds (Angus, Wagyu) and three finishing rations (pasture, 15% flaxseed supplementation, 35% wet distiller's grain (WDG) supplementation). Dietary replacement levels in the model were 10%, 25%, 50%, 100%. Overall, men consumed more beef fat than women (12.0 g (11.6–12.4 g, 95%CI) and 6.6 g (6.4–6.9 g, 95%CI), respectively). The contribution of beef fat to SFA intake was 2.1%E (2.1–2.2%E, 95%CI) in men and 1.6%E (1.6–1.7%E, 95%CI) in women. SFA intake decreased with each increased replacement level for all beef types. At 100% replacement, SFA intake decreased 0.5% (Angus), 2.8% (Wagyu), 1.9% (pasture), 4.1% (flaxseed), 2.6% (WDG). Our findings demonstrate that breed and finishing ration that reduces the SFA content of beef can decrease population-level SFA intake.

我们试图确定降低牛的饱和脂肪（SFA）含量对成年牛的SFA摄入量（％E）的育种和肥育率的影响。使用国家健康和营养检查调查（2001-2016），我们用两个品种（安格斯，和牛）和三个定量配比（牧草，15％亚麻籽补品，35％湿酒糟（ WDG）补充）。该模型中的膳食替代水平为10％，25％，50％，100％。总体而言，男性比女性摄入更多的牛肉脂肪（分别为12.0 g（11.6-12.4 g，95％CI）和6.6 g（6.4-6.9 g，95％CI））。男性中牛肉脂肪对SFA摄入的贡献为2.1％E（2.1–2.2％E，95％CI），女性为1.6％E（1.6–1.7％E，95％CI）。随着所有牛肉类型替代水平的提高，SFA摄入量减少。替换率为100％时，SFA摄入量减少了0。5％（安格斯），2.8％（和牛），1.9％（草皮），4.1％（亚麻籽），2.6％（WDG）。我们的研究结果表明，降低牛肉中SFA含量的品种和肥育率可以降低人群中SFA的摄入量。