Cervantes-Pahm S K, Stein H H
Department of Animal Sciences, University of Illinois, Urbana, Illinois 61801, USA.
J Anim Sci. 2010 Aug;88(8):2674-83. doi: 10.2527/jas.2009-2677. Epub 2010 Apr 20.
An experiment was conducted to determine the apparent (AID) and standardized (SID) ileal digestibility of CP and AA in weanling pigs of 4 soybean products, fish meal, and casein. The 4 soybean products were conventional dehulled soybean meal (SBM), soy protein isolate (SPI), fermented soybean meal (FSBM), and enzyme-treated soybean meal (ESBM). Seven weanling barrows (initial BW: 10.9 +/- 2.3 kg) were individually fitted with a T-cannula in the distal ileum. The barrows were allotted to a 7 x 7 Latin square design with 7 diets and seven 7-d periods. Six cornstarch-based diets were prepared using each of the protein sources as the sole source of CP and AA. An N-free diet was used to measure basal endogenous losses of CP and AA. Results showed that except for Lys, the AID and SID of AA in FSBM was not different from SBM, and with a few exceptions, the AID and SID of most AA in SBM, FSBM, and ESBM were not different from each other and from the AID and SID of AA in fish meal. Likewise, the AID and SID of AA in ESBM and SPI were not different, but the AID and SID of most AA in SPI were greater (P < 0.05) than in SBM and FSBM. The AID and SID of most AA in SPI were not different from the AID and SID of AA in casein. In conclusion, FSBM and ESBM had similar SID of most AA as SBM, but SPI has the greatest SID of AA among the 4 soybean products. Casein had the greatest SID of AA among the protein sources studied.
进行了一项实验，以测定4种大豆制品、鱼粉和酪蛋白在断奶仔猪中粗蛋白（CP）和氨基酸（AA）的表观回肠消化率（AID）和标准回肠消化率（SID）。这4种大豆制品分别是常规去皮豆粕（SBM）、大豆分离蛋白（SPI）、发酵豆粕（FSBM）和酶处理豆粕（ESBM）。7头断奶公猪（初始体重：10.9±2.3千克）在回肠末端分别安装了T型套管。这些公猪被分配到一个7×7拉丁方设计中，有7种日粮和7个7天的试验期。使用每种蛋白质来源作为CP和AA的唯一来源，制备了6种以玉米淀粉为基础的日粮。使用无氮日粮来测定CP和AA的基础内源损失。结果表明，除赖氨酸外，FSBM中AA的AID和SID与SBM无差异，并且在少数例外情况下，SBM、FSBM和ESBM中大多数AA的AID和SID彼此之间以及与鱼粉中AA的AID和SID无差异。同样，ESBM和SPI中AA的AID和SID无差异，但SPI中大多数AA的AID和SID高于（P<0.05）SBM和FSBM。SPI中大多数AA的AID和SID与酪蛋白中AA的AID和SID无差异。总之，FSBM和ESBM中大多数AA的SID与SBM相似，但SPI在4种大豆制品中AA的SID最高。在所研究的蛋白质来源中，酪蛋白中AA的SID最高。
