The aim of the present study was to determine the apparent digestibility coefficients (ADCs) of gross energy, dry matter, crude protein, amino acids, and different carbohydrate fractions of spineless cactus meals (SCMs) for Nile tilapia juveniles, fed with extruded diets. Fish were fed a reference diet or one of five test diets, each of which included 70% reference diet and 30% corresponding SCM. Fecal collection was performed in modified Guelph method. The ADCs for dry matter, gross energy, and soluble carbohydrates of the “redonda” spineless cactus meal (RSCM) were higher (P < 0.05) than those of either the “IPA 20” spineless cactus meal (ISCM) or “gigante” spineless cactus meal (GSCM), and the ADCs for crude protein of the RSCM and “Orelha de elefante africana” spineless cactus meal (OEASCM) were higher than those of the other cactus meals (P < 0.05). In addition, the ADCs for dry matter, crude protein, and gross energy of the SCMs were similar to wheat middlings. The digestibility of the less soluble fraction of the evaluated carbohydrates, the non-fibrous carbohydrates, varied between 58.32 and 73.04%, indicating efficiency in the digestion and absorption process. The data obtained in this article can be the basis for growth experiments, with the substitution of traditional ingredients for SCMs. The determination of zootechnical, physiological, metabolic, and health variables can indicate the potential for using SCMs in diets for Nile tilapia.

本研究的目的是确定饲喂挤压日粮的尼罗罗非鱼幼鱼的无脊柱仙人掌粉（SCM）的总能量，干物质，粗蛋白，氨基酸和不同碳水化合物组分的表观消化系数（ADCs）。给鱼喂食参考饮食或五种测试饮食之一，每种饮食都包含70％的参考饮食和30％的相应SCM。粪便收集采用改良的Guelph方法进行。“ redonda”无脊柱仙人掌粉（RSCM）的干物质，总能量和可溶性碳水化合物的ADC较高（P <0.05），而不是“ IPA 20”无脊柱仙人掌粉（ISCM）或“ gigante”无脊柱仙人掌粉（GSCM）以及RSCM和“非洲大叶锦葵”无脊柱仙人掌粉（OEASCM）的ADC ）高于其他仙人掌餐（P <0.05）。另外，SCM的干物质，粗蛋白和总能量的ADC与小麦中型相似。被评估的碳水化合物中非水溶性碳水化合物的溶解度较低的部分的消化率在58.32％至73.04％之间变化，表明消化和吸收过程的效率。本文获得的数据可以用作生长实验的基础，用传统成分替代SCM。动物技术，生理，代谢和健康变量的确定可以表明在尼罗罗非鱼日粮中使用SCM的潜力。