蛋鸡脂肪的真代谢能值和表观代谢能值：使用水平的影响

True and apparent metabolizable energy value of fat for laying hens: influence of level of use.

作者信息

Mateos G G, Sell J L

出版信息

Poult Sci. 1980 Feb;59(2):369-73. doi: 10.3382/ps.0590369.

Abstract

White Leghorn hens in egg production were fed rations that contained 0, 3, 6, 9, 12, or 15% yellow grease. True metabolizable energy (TME) and nitrogen-corrected apparent metabolizable energy (AMEn) values of the rations were determined, and these data were used to estimate the TME and AMEn of yellow grease. An inverse relationship was observed between the level of yellow grease supplementation and the TME and AMEn values of this fat source. The TME and AMEn of yellow grease were 11,567 and 9,367 kcal/kg, respectively, when the supplemental level was 3%. Corresponding values when yellow grease constituted 15% of the ration were 8,907 and 8,653 kcal/kg, respectively. Variation in fatty acid composition of total dietary fat and associated changes in the TME and AMEn of yellow grease are discussed.

摘要

给产蛋期的白来航母鸡投喂含有0%、3%、6%、9%、12%或15%黄色油脂的日粮。测定了日粮的真代谢能（TME）和氮校正表观代谢能（AMEn）值，并利用这些数据估算黄色油脂的TME和AMEn。观察到黄色油脂添加水平与该脂肪源的TME和AMEn值之间呈负相关。当添加水平为3%时，黄色油脂的TME和AMEn分别为11,567千卡/千克和9,367千卡/千克。当日粮中黄色油脂占15%时，相应的值分别为8,907千卡/千克和8,653千卡/千克。讨论了总日粮脂肪脂肪酸组成的变化以及黄色油脂TME和AMEn的相关变化。