Abstract An experiment was conducted to test the hypothesis that concentrations of digestible energy (DE) and metabolizable energy (ME) in threonine and valine biomass products are not different from those in fish meal. Two threonine biomass products (i.e., Thr-BM1 and Thr-BM2) and 1 valine biomass product (Val-BM) were obtained from the production of crystalline l -threonine and l -valine. The biomass products consist of the fermentation biomass that is left after the crystalline amino acids have been harvested at the end of fermentation. Forty weanling barrows (11.25 ± 0.65 kg) were placed individually in metabolism crates and allotted to a completely randomized design with 5 diets and 8 replicate pigs per diet. A bakery meal-based diet consisting of 973.5 g/kg bakery meal was formulated. Four additional diets containing a mixture of bakery meal and Thr-BM1, Thr-BM2, Val-BM, or fish meal were also formulated. Feces and urine samples were collected for 5 days after a 5-day adaptation period. Results indicated that the apparent total tract digestibility of gross energy was less (P

中文翻译：

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饲喂断奶仔猪的 L-苏氨酸和 L-缬氨酸生物质产品中可消化和代谢能的浓度

摘要 进行了一项实验以检验苏氨酸和缬氨酸生物质产品中可消化能 (DE) 和代谢能 (ME) 的浓度与鱼粉中没有差异的假设。两种苏氨酸生物质产品（即，Thr-BM1 和 Thr-BM2）和一种缬氨酸生物质产品（Val-BM）从结晶 l-苏氨酸和 l-缬氨酸的生产中获得。生物质产品由发酵结束时收获结晶氨基酸后剩余的发酵生物质组成。四十头断奶的手推车（11.25 ± 0.65 kg）被单独放置在代谢箱中，并被分配到完全随机的设计中，每种日粮有 5 种日粮和 8 头重复猪。配制由 973.5 g/kg 烘焙粉组成的基于烘焙粉的饮食。还配制了包含烘焙粉和 Thr-BM1、Thr-BM2、Val-BM 或鱼粉的混合物的四种额外饮食。在 5 天的适应期后，收集了 5 天的粪便和尿液样本。结果表明，总能量的表观总消化率较低（P