Muztar A J, Likuski H J, Slinger S J
Poult Sci. 1981 Feb;60(2):373-84. doi: 10.3382/ps.0600373.
True metabolizable energy (TME) values were measured on six samples of soybean meal (SBM), two samples of corn, and five laying hen rations mixed at two different times The determinations were carried out in two different laboratories, the University of Guelph (UG) and Canada Packers (CP) Research Centre, with a view of checking interlaboratory agreement. The TME values of four out of the six SBM samples agreed very well between the two laboratories. For the two samples with results that did not agree well, the difference was as much as 8%. The TME values of the two corn samples determined at the UG laboratory were about 6 to 9% higher than those obtained at the CP Centre depending on whether these were fed alone or mixed with a basal diet. In the case of the layer rations mixed at two different times, reasonably good interlaboratory agreement of the TME results occurred for only three of the five rations at each of the two mixings. The results of the remaining two rations varied by about 7 to 9% between laboratories. These results indicate the need to improve the reproducibility of TME values between laboratories before the method can have practical application. A number of factors possibly contributing to the significant interlaboratory differences noted are discussed.
对六个豆粕（SBM）样本、两个玉米样本以及在两个不同时间混合的五组蛋鸡日粮测定了真代谢能（TME）值。测定在两个不同实验室进行，即圭尔夫大学（UG）和加拿大包装公司（CP）研究中心，目的是检查实验室间的一致性。六个SBM样本中有四个样本的TME值在两个实验室之间非常吻合。对于结果不一致的两个样本，差异高达8%。根据玉米样本是单独饲喂还是与基础日粮混合，UG实验室测定的两个玉米样本的TME值比CP中心获得的TME值高约6%至9%。对于在两个不同时间混合的蛋鸡日粮，在两次混合中，每组五个日粮中只有三个日粮的TME结果在实验室间有合理良好的一致性。其余两个日粮的结果在不同实验室之间相差约7%至9%。这些结果表明，在该方法能够实际应用之前，需要提高实验室间TME值的重现性。讨论了可能导致所观察到的显著实验室间差异的一些因素。
