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采用Y2O3作为外源指示剂,以70%基础饲料和30%待测饲料原料配制试验饲料,测定初始体质量为(23.30±0.32)g的花鲈对鱼粉(FM)、豆粕(SBM)、花生粕(PNM)、棉粕(CSM)、菜籽粕(RSM)和玉米DDGS干物质、粗蛋白、粗脂肪、总能、磷和氨基酸的表观消化率。结果表明,花鲈对6种饲料原料干物质的表观消化率在33.85%~75.08%,其中PNM、CSM、RSM和DDGS与FM相比分别显著降低(P<0.05)。对粗蛋白的表观消化率为88.10%~94.55%,其中FM显著高于CSM(P<0.05)。对粗脂肪的表观消化率超过75%,CSM与FM相比显著降低(P<0.05),SBM和DDGS显著低于其他各种饲料原料(P<0.05)。对磷的表观消化率为29.03%~87.39%,其中SBM显著高于其他各饲料原料(P<0.05)。花鲈对FM总能的表观消化率显著高于其他各饲料原料(P<0.05),对CSM总能的表观消化率与其他原料相比显著降低(P<0.05)。花鲈对氨基酸的表观消化率范围为47.27%~98.90%,其中对SBM和PNM氨基酸的表观消化率与FM最为接近。结果表明,花鲈对PNM和SBM的干物质、粗蛋白、磷、总能和氨基酸的表观消化率与FM比较接近,可以作为饲料中替代FM的植物蛋白源。
The test feed was formulated with 70% basal diet and 30% feedstuff with Y2O3 as exogenous indicator. The initial body weight was (23.30 ± 0.32) g. The effects of different diet on fishmeal (FM), soybean meal (SBM), peanut Apparent digestibility of dry matter, crude protein, crude fat, total energy, phosphorus, and amino acids for PNM, CSM, RSM and DDGS. The results showed that the apparent digestibility of dry matter of six kinds of feed raw materials was 33.85% -75.08%, and the PNM, CSM, RSM and DDGS were significantly lower than FM (P <0.05). The apparent digestibility of crude protein was 88.10% ~ 94.55%, FM was significantly higher than that of CSM (P <0.05). Apparent digestibility of crude fat was over 75%, CSM was significantly lower than FM (P <0.05), SBM and DDGS were significantly lower than other feed ingredients (P <0.05). The apparent digestibility of phosphorus was 29.03% ~ 87.39%, of which SBM was significantly higher than other feed ingredients (P <0.05). The apparent digestibility of total energy of FM was significantly higher than that of other feed materials (P <0.05). The apparent digestibility of total energy of CSM was significantly lower than that of other raw materials (P <0.05). The apparent digestibility of amino acids in the seabass ranged from 47.27% to 98.90%, of which the apparent digestibility of amino acids to SBM and PNM was the closest to FM. The results showed that the apparent digestibility of dry matter, crude protein, phosphorus, total energy and amino acid of PNM and SBM were similar to that of FM, and could be used as a plant protein source to replace FM in feed.