摘要
Twelve crossbred barrows (BW 47 ± 2.81 kg) were fitted with a T-cannula in the terminal ileum and fed one of ten diets containing corn gluten meal, dried distillers grain or dried distillers grain with solubles as the sole protein source, according to a 6 × 6 Latin Square design. Lysine, tryptophan and methionine were, the first, second and third limiting amino acids in these by-products. The ileal apparent digestibility of methionine, tyrosine, leucine and phenylalanine in corn gluten meal was high. The ileal apparent digestibility of tryptophan, tyrosine and leucine differed significantly in corn gluten meal. The ileal apparent digestibility of amino acids was higher in dried distillers grain with solubles than in dried distillers grain. To predict the ileal apparent digestibility of tryptophan, methionine and threonine linear regression equations were derived. The results suggested that processing technique can influence the ileal apparent digestibility of amino acids in corn by-products. It was concluded that the direct technique cannot accurately determine the ileal apparent digestibility of tryptophan in dried distillers grain with solubles and dried distillers grain, due to its low content. The content of an amino acid in a feedstuff used as the sole source of protein must meet the minimum requirement of pigs when the ileal apparent digestibility of constituent amino acids is determined using the direct technique.
摘要译文
十二杂交阉公猪（BW 47±2.81千克）分别装有一T形套管中的回肠末端和馈十日粮含有玉米蛋白粉之一，干酒糟或干酒糟与可溶物作为唯一的蛋白质来源，按照6×6拉丁方设计。赖氨酸，色氨酸和蛋氨酸是，第一，副产品的第二和第三限制性氨基酸在这些。蛋氨酸，酪氨酸，亮氨酸和苯丙氨酸在玉米蛋白粉的回肠表观消化率很高。色氨酸，酪氨酸和亮氨酸回肠表观消化率在玉米蛋白粉显著不同。氨基酸的回肠表观消化率在干酒糟与可溶物较干酒糟高。为了预测色氨酸回肠表观消化率，蛋氨酸和苏氨酸的线性回归方程推导。结果表明，处理技术可以由副产物的影响在玉米的氨基酸的回肠表观消化率。得出的结论是，直接技术不能准确地确定与可溶物并干燥酒糟色氨酸在干燥酒糟的回肠表观消化率由于它的低含量。标识中用作蛋白的唯一来源，必须满足猪的最低要求时的构成氨基酸的回肠表观消化率使用直接法确定一个饲料。
Guo Liang[a]; Defa Li[b]; Fenglai Wang[b]; Jianguo Dai[b] ; Wenjun Yang[b]. Evaluation of apparent ileal digestibility of amino acids in chinese corn by-products for growing-finishing pigs[J]. Archives of Animal Nutrition, 2003,57(2): 117-125