Harlan脂肪/脂质调整饲料 Fat/lipid adjusted
Harlan Teklad动物饲料
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Fat/lipid adjusted
There are numerous possibilities in adjusting both the level and source of fat in a diet. If your primary interest is inducing atherosclerosis or obesity, additional information can be found on our Teklad atherogenic and diet induced obesity (DIO) diet pages. Depending on your research goals and level of desired fat supplementation, fats can be added to a standard natural ingredient diet or a purified diet.
Purified ingredients are refined to the point of chemical simplicity and allow for extreme fat levels such as no fat diet TD.03314 or very high fat ketogenic diet TD.96355 . Unless adjustments are made to the level of fiber, diets with high fat levels will have a greater caloric density since fat contains 9 kcal/g versus 4 kcal/g for carbohydrate or protein. Animals are good at regulating caloric intake, therefore it is common to adjust other nutrients (vitamins, minerals, protein) relative to energy content to account for differences in feed intake.
调整饮食中脂肪的水平和来源有很多可能性。 如果您的主要兴趣是诱发动脉粥样硬化或肥胖,可以在我们的 Teklad 致动脉粥样硬化和饮食诱导肥胖 (DIO) 饮食页面上找到更多信息。 根据您的研究目标和所需的脂肪补充水平,可以将脂肪添加到标准天然成分饮食或纯化饮食中。
纯化的成分经过精制,达到化学简单的程度,并允许极高的脂肪水平,例如无脂肪饮食 TD.03314 或非常高脂肪的生酮饮食 TD.96355。 除非对纤维水平进行调整,否则高脂肪饮食的热量密度会更高,因为脂肪含有 9 kcal/g,而碳水化合物或蛋白质为 4 kcal/g。 动物擅长调节热量摄入,因此通常会根据能量含量调整其他营养素(维生素、矿物质、蛋白质),以解决采食量的差异。
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Specific fats can be utilized as in this essential fatty acid deficient diet TD.84224 or to provide high levels of omega-3 polyunsaturated fat from flaxseed or fish oil. Normally, 1-2% fat from plant sources like corn or soybean oil will supply sufficient levels of essential fatty acids. Additional fat provides energy and can influence palatability due to effects on taste and texture of the diet.
Mixtures of fats can be used to mimic a Western or Mediterranean diet fatty acid profile. Contact us for a table comparing the fatty acid composition of several stocked fat sources (solid fats, oils).
We also commonly work with customer supplied oils and purified fatty acids such as DHA and EPA. If you prefer to mix fat sources in your lab, ask about a basal mix. Basal mixes are supplied in powder form and often allow you to use one diet mix for creating several different diets.
If fat stability is a concern, contact a nutritionist to discuss options for diet drying, vacuum packaging, and synthetic antioxidant supplementation.
特定脂肪可用于这种缺乏必需脂肪酸的饮食 TD.84224,或从亚麻籽或鱼油中提供高水平的 omega-3 多不饱和脂肪。通常,来自植物来源(如玉米或大豆油)的 1-2% 脂肪将提供足够水平的必需脂肪酸。额外的脂肪提供能量,并且由于对饮食的味道和质地的影响而影响适口性。
脂肪混合物可用于模拟西方或地中海饮食的脂肪酸分布。请联系我们获取比较几种库存脂肪来源(固体脂肪、油)的脂肪酸组成的表格。
我们通常还使用客户提供的油和纯化脂肪酸,例如 DHA 和 EPA。如果您更喜欢在实验室中混合脂肪来源,请询问基础混合物。基础混合物以粉末形式提供,通常允许您使用一种饮食混合物来创建几种不同的饮食。
如果担心脂肪稳定性,请联系营养师讨论饮食干燥、真空包装和合成抗氧化剂补充剂的选择。
Example diets mentioned above
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