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首页> 外文期刊>Fisheries and Aquatic Sciences >Effects of the Dietary Microbial Phytase Supplementation on Bioavailability of Phosphorus in Juvenile Olive Flounder Paralichthys olivaceus Fed Soybean Meal based Diets
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Effects of the Dietary Microbial Phytase Supplementation on Bioavailability of Phosphorus in Juvenile Olive Flounder Paralichthys olivaceus Fed Soybean Meal based Diets

机译：膳食中的植酸酶添加对少年以F鱼为食的豆粕日粮中磷生物利用度的影响

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摘要

An 8 weeks feeding trial was carried out to evaluate the effects of dietary microbial phytase (P) supplementation on nutrient digestibility, and body composition in juvenile olive flounder Paralichthys olivaceus fed soybean meal-based diets. Seven experimental diets were formulated to be isonitrogenous and isocaloric to contain 50.0% crude protein (CP) and 16.7 kJ of available energy/g with or without dietary phytase supplementation. White fish meal (FM) provided 92.4% of the total protein in the basal diet ( ), in the other 6 diets, 30% or 40% FM protein was replaced by soybean meal: 70% FM + 30% soybean meal ( ); 70% FM + 30% SM + 1000 U phytase/kg diet ( ); 70% FM + 30% SM + 2000 U phytase/kg diet ( ); 60% FM + 40% SM ( ); 60% FM + 40% SM + 1000 U phytase/kg diet ( ); and 60% FM + 40% SM + 2000 U phytase/kg diet ( ). After two weeks of the conditioning period, triplicate groups of 25 fish initially averaging ( ) were randomly distributed into the aquarium and were fed one of the experimental diets for 8 weeks. After feeding trial, supplementation of phytase significantly improved the apparent digestibility coefficients of phosphorus in flounder diets (P<0.05) containing 30% and 40% soybean meal regardless the levels. However, phytase had no significant influence on growth performance and whole body composition of fish. Based on the experimental results, we conclude that dietary supplementation of phytase could improve the apparent digestibility coefficient of phosphorus in olive flounder.
机译：进行了为期8周的喂养试验，以评估膳食微生物植酸酶（P）补充对以豆粕为基础的大豆幼鱼比目鱼的营养消化率和身体组成的影响。七个实验日粮被配制为等氮和等热量日粮，含有50.0％的粗蛋白（CP）和16.7 kJ的可用能量/ g（添加或不添加膳食植酸酶）。白鱼粉（FM）提供了基础饮食中总蛋白的92.4％（），在其他6种饮食中，豆粕替代了30％或40％FM蛋白：70％FM + 30％豆粕（）; 70％FM + 30％SM + 1000 U植酸酶/ kg饮食（）; 70％FM + 30％SM + 2000 U植酸酶/ kg饮食（）; 60％FM + 40％SM（）; 60％FM + 40％SM + 1000 U植酸酶/ kg饮食（）;和60％FM + 40％SM + 2000 U植酸酶/ kg饮食（）。在适应期的两周后，将最初平均（）的25条鱼的三组重复随机分配到水族馆中，并喂食其中一种实验饮食，持续8周。饲喂试验后，补充肌醇六磷酸酶可显着提高含大豆粉30％和40％的比目鱼日粮中磷的表观消化系数（P <0.05）。然而，肌醇六磷酸酶对鱼类的生长性能和全身组成没有显着影响。根据实验结果，我们得出结论，膳食中添加植酸酶可以改善比目鱼中磷的表观消化系数。

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