红鳍东方鲀对8种饲料原料的表观消化率

Apparent digestibility coefficients of selected feed ingredients for juvenile tiger puffer (Takifugu rubripes)

中文关键词: 红鳍东方鲀  表观消化率  饲料原料  营养物质

英文关键词: Takifugu rubrpes  Apparent digestibility coefficients  Feed ingredients  Nutrients

中文摘要:

      本研究旨在探讨红鳍东方鲀(Takifugu rubripes)幼鱼对红鱼粉、白鱼粉、豆粕、菜粕、花生粕、棉粕、玉米酒糟蛋白(DDGS)和肉骨粉中干物质、粗蛋白、粗脂肪、氨基酸、总能和总磷的表观消化率。实验饲料由70%的基础饲料和30%的待测饲料原料组成，并添加0.1%的三氧化二钇(Y2O3)作为外源添加剂，选取平均体重为37.90 g的红鳍东方鲀幼鱼，随机分成8组，每组3个重复，每个重复30尾鱼，按照不同处理分别投喂相应饲料，采用虹吸法收集粪便。结果显示，白鱼粉、红鱼粉和豆粕的干物质表观消化率分别为70.54%、69.02%和60.37%，显著高于菜粕、棉粕及DDGS(P<0.05)；粗蛋白的表观消化率为50.91%~92.78%，肉骨粉粗蛋白表观消化率最低(50.91%)，显著低于白鱼粉、红鱼粉、豆粕、菜粕、花生粕和DDGS(P<0.05)，各待测饲料原料中总氨基酸表观消化率的变化趋势与粗蛋白的表观消化率基本一致；粗脂肪的表观消化率为70.6%~94.19%，白鱼粉粗脂肪表观消化率最高(94.19%)，显著高于棉粕和肉骨粉(P<0.05)；能量的表观消化率为30.58%~90.01%，白鱼粉、红鱼粉、豆粕和花生粕总能的表观消化率最高(76.26%~90.01%)(P<0.05)；磷的表观消化率为9.13%~68.14%，白鱼粉和红鱼粉的总磷表观消化率最高(分别为66.98%和68.14%)(P<0.05)。白鱼粉、红鱼粉的各种营养成分的表观消化率均较佳，肉骨粉及棉粕各种营养成分的表观消化率相对较差；豆粕及花生粕的粗蛋白消化率及必需氨基酸的消化率优于其他植物蛋白，菜粕次之。

英文摘要:

      Apparent digestibility coefficients (ADCs) of dry matter, crude protein, crude lipid, gross energy, phosphorus and amino acids in white fish meal, Peruvian red fish meal, meat and bone meal, corn gluten meal, soybean meal, peanut meal, cottonseed meal, and rapeseed meal were determined for juvenile tiger puffer (Takifugu rubripes) with initial mean body weight of 37.90 g. A reference diet and test diets that consisted of a 70 : 30 mixture of the reference diet to test ingredient were used with 0.1% Y2O3 as an external indicator. White fish meal, Peruvian red fish meal and soybean meal had higher ADCs of dry matter, dry matter ADCs ranged in 43.35%~70.54% among ingredients tested. Protein ADCs of feed ingredients ranged in 50.91%~92.78%, meat and bone meal had significantly lower ADCs of protein compared with that of white fish meal, Peruvian red fish meal, soybean meal, peanut meal, rapeseed meal and distillers dried grains with solubles (DDGS) (P<0.05). Amino acid ADCs generally reflected protein digestibility. ADCs of lipid were relatively high in the ingredients tested. Energy ADCs of feed ingredients ranged in 30.58%~90.01%, white fish meal, Peruvian red fish meal, soybean meal and peanut meal had significantly higher ADCs of energy (76.26%~90.01%). Phosphorus ADCs of feed ingredients ranged in 9.13%~68.14%, white fish meal, Peruvian red fish meal had significantly higher ADCs of phosphorus among ingredients tested. In conclusion, ADCs of dry matter, crude protein, crude lipid, gross energy, phosphorus and amino acids in white fish meal, Peruvian red fish meal were higher, while ADCs of dry matter, crude protein, crude lipid, gross energy, phosphorus and amino acids in meat and bone meal and DDGS were lower compared with that other tested ingredient for tiger puffer. Soybean meal and peanut meal had higher ADCs of protein and essential amino acids in plant protein ingredients. Resultant digestibility data may provide useful information to commercial tiger puffer feed industry.