摘要
Three experiments were conducted to evaluate the metabolizable energy (ME) value, standardized ileal digestibility (SID) of amino acids (AA) of soybean meal (SBM), soy protein concentrate (SPC) and fermented soybean meal (FSBM), and the application of these products in early-weaned piglets. In Exp. 1, four barrows with initial body weight (BW) of kg were used in a Latin square design. The diet 1 contained corn as the only energy source. The other three diets replaced 25% of corn in diet 1 with one of the three soybean products, and the digestable energy (DE) and ME contents were determined by difference. In Exp. 2, four barrows (initial BW of kg) were fitted with ileal T-cannulas and allotted to a Latin square design. Three cornstarch-based diets were formulated using each of the soybean products as the sole source of AA. A nitrogen-free diet was also formulated to measure endogenous losses of AA. In Exp. 3, ninety six piglets (initial BW of kg) weaned at d were blocked by weight and assigned to one of three treatments for a 21-d growth performance study. The control diet was based on corn and SBM, the two treatments` diets contained either 10% SPC or FSBM and were formulated to same SID lysine to ME ratio of 3.6 g/Mcal. The results showed that the ME content of SPC was greater than SBM (p<0.05). The SID of most AA in SPC was greater than the SID of AA in SBM (p<0.05). For the essential AA, the SID of histidine, isoleucine, leucine, lysine and threonine in FSBM were greater than in SBM (p<0.05). Even though they were fed same SID lysine to ME ratio of 3.6 g/Mcal diets, pigs fed SPC and FSBM diets had greater weight gain, G:F (p<0.05) and better fecal score (p<0.05) than pigs fed SBM diet. In conclusion, SPC showed a higher ME content and SID of AA than the SBM. SID of some essential AA in FSBM was higher than SBM and was similar with SPC. But the lower antigenic proteins and anti-nutritional factors content in SPC and FSBM may be the main factors affecting the performance of early-weaned piglets rather than the increased ME content and SID of AA.
摘要译文
进行了三个实验来评估代谢能（ME）值，豆粕氨基酸（AA）的标准化回肠消化率（SID），大豆浓缩蛋白（SPC）和发酵豆粕（FSBM），以及这些产品在早期断奶仔猪中的应用。在Exp。 1，在拉丁方设计中使用具有初始体重（BW）kg的四个阉猪。饮食1含有玉米作为唯一的能量来源。其他三种饮食用三种大豆产品中的一种替代饮食1中25％的玉米，并且通过差异确定可消化能量（DE）和ME含量。在Exp。 2，四个阉猪（初始BW为kg）装有回肠T型套管并分配到拉丁方设计。使用每种大豆产品作为AA的唯一来源配制三种基于玉米淀粉的饮食。还配制了无氮饮食以测量AA的内源性损失。在Exp。 3，在d处断奶的96头仔猪（初始BW为kg）被重量阻断并分配到三个处理之一进行21天生长性能研究。对照饮食基于玉米和SBM，两种处理的日粮含有10％SPC或FSBM，并配制成相同的SID赖氨酸与ME比为3.6g / Mcal。结果表明，SPC的ME含量大于SBM（p 0。05）。 SPC中大多数AA的SID大于SBM中AA的SID（p 0.05）。对于必需的AA，组氨酸，异亮氨酸，亮氨酸的SID，FSBM中的赖氨酸和苏氨酸大于SBM（p 0.05）。即使他们饲喂相同的SID赖氨酸与ME比例为3.6克/麦累日粮，喂食SPC和FSBM日粮的猪体重增加更多，G：F（p 0.05）和比喂食SBM饮食的猪更好的粪便评分（p 0.05）。总之，SPC显示出比SBM更高的ME含量和AA的SID。FSBM中一些必需AA的SID高于SBM，与SPC相似。SPC和FSBM中的抗原蛋白和抗营养因子含量可能是影响早期断奶仔猪生长性能的主要因素，而不是增加的ME含量和AA的SID。
Zhang, H.Y.; Yi, J.Q.; Piao, X.S.; Li, P.F.; Zeng, Z.K.; Wang, D.; Liu, L.; Wang, G.Q.; Han, X.;. The Metabolizable Energy Value, Standardized Ileal Digestibility of Amino Acids in Soybean Meal, Soy Protein Concentrate and Fermented Soybean Meal, and the Application of These Products in Early-weaned Piglets[J]. Asian-Australasian Journal of Animal Sciences, 2013,26(5): 691-699