Background The effects of cassava peel meal (CPM) supplemented with methionine (MET) and multienzyme (ENZ) was studied using 240 5-week-old rabbits in a completely randomized design arranged in 2 × 2 × 2 factorial (2 CPM levels, 0 and 350 g/kg; 2 methionine levels, 5.6 and 8.3 g/kg; and 2 enzyme levels, 0 and 0.5 g/kg). Results The CPM inclusion reduced ( P < 0.05) leucine, lysine, valine, and threonine digestibility, while the digestibility of leucine, lysine, and valine increased ( P < 0.05) by high methionine level. Multienzyme increased leucine, lysine, and valine digestibility. CPM reduced ( P < 0.01) red blood cell (RBC) count and the total serum protein. Higher methionine supplementation increased the serum total protein by 9.2%. The CPM inclusion increased bilirubin, alanine aminotransferase (ALT), and aspartate aminotransferase (AST). Methionine and enzyme supplementation increased albumin (ALB) but reduced creatinine (CRE). Superoxide dismutase, glutathione peroxidase, and catalase activity level increased ( P < 0.01) with methionine and enzyme supplementation. Conclusion Cassava peel meal could be included in growing rabbits’ diets at 350 g/kg level with methionine at 32.53% higher than requirement and 0.5-g/kg multienzyme supplementation.

中文翻译：

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木薯皮粉添加蛋氨酸和多酶对家兔血液生化指标、消化率和抗氧化剂的影响

背景 使用 240 只 5 周龄兔子在完全随机设计中研究了添加蛋氨酸 (MET) 和多酶 (ENZ) 的木薯皮粉 (CPM) 的影响，这些兔子以 2 × 2 × 2 因子（2 CPM 水平，0和 350 g/kg；2 种蛋氨酸水平，5.6 和 8.3 g/kg；以及 2 种酶水平，0 和 0.5 g/kg）。结果 CPM 的加入降低了（ P < 0.05）亮氨酸、赖氨酸、缬氨酸和苏氨酸的消化率，而高蛋氨酸水平提高了亮氨酸、赖氨酸和缬氨酸的消化率（ P < 0.05）。多酶增加了亮氨酸、赖氨酸和缬氨酸的消化率。CPM 降低 ( P < 0.01) 红细胞 (RBC) 计数和总血清蛋白。较高的蛋氨酸补充剂使血清总蛋白增加了 9.2%。CPM 包含增加胆红素、丙氨酸氨基转移酶 (ALT)、和天冬氨酸氨基转移酶（AST）。蛋氨酸和酶补充剂增加了白蛋白 (ALB)，但降低了肌酐 (CRE)。超氧化物歧化酶、谷胱甘肽过氧化物酶和过氧化氢酶活性水平随着蛋氨酸和酶的补充而增加（ P < 0.01）。结论 木薯皮粉可按350 g/kg水平添加到生长兔日粮中，蛋氨酸比需求量高32.53%，并添加0.5-g/kg多酶。