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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >Evaluation of Meat and Bone Meal and Mono-Sodium Phosphate as Supplemental Dietary Phosphorus Sources for Broodstock Nile Tilapia (Oreochromis niloticus) Under the Conditions of Hapa-in- Pond System
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Evaluation of Meat and Bone Meal and Mono-Sodium Phosphate as Supplemental Dietary Phosphorus Sources for Broodstock Nile Tilapia (Oreochromis niloticus) Under the Conditions of Hapa-in- Pond System

机译：Hapa-in-Pond系统条件下肉，骨粉和磷酸一钠作为亲鱼尼罗罗非鱼（Oreochromis niloticus）的补充膳食磷源的评估

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An experiment was conducted to evaluate if phosphorus (P) supplement is required in Nile tilapia Oreochromis niloticus broodstock diet under hapa-in-pond system. Seven isonitrogenous (33% crude protein), isocaloric (4400 kcal kg-1) diets were formulated. A corn-soybean meal based diet, deficient in P, was used as the basal diet. Three levels of meat and bone meal (MBM), and mono-sodium phosphate (MSP) were substituted for corn-starch in the basal diet to produce experimental diets containing 0.56, 0.67, or 0.78% P. Males and females with mean body weights of (270±1.52 g) and (250±1.17 g), respectively, were stocked at a density of 4 fish m-1, (8 fish hapa-1) with a male: female ratio of 1:3. Irrespective of P source, it was observed that, increasing P level significantly (P≤0.05) increased broodstock fecundity. Spawning performance and egg weight were not significantly affected by dietary P source. However, dietary MBM increased the absolute fecundity and total egg production (P≥0.05) compared to the MSP diets. While, broodstock fed MSP diets showed the highest egg weight. This result revealed that Nile tilapia broodfish reared in the green water under hapa-in-pond system require a source of dietary P for optimum spawning performance.
机译：进行了一项试验，以评估在“哈帕鱼”系统下尼罗罗非鱼尼罗罗非鱼亲鱼日粮中是否需要补充磷（P）。配制了七个等氮（粗蛋白为33％）等热量（4400 kcal kg-1）日粮。缺乏磷的玉米-豆粕基饮食被用作基础饮食。在基础饮食中用三种水平的肉骨粉（MBM）和磷酸一钠（MSP）代替玉米淀粉，以生产含0.56、0.67或0.78％P的实验饮食。男性和女性的平均体重分别以4条鱼m -1 ，（8条鱼hapa -1 ）的密度放养（270±1.52 g）和（250±1.17 g）男女之比为1：3。不论磷源如何，都可以观察到，磷水平的显着提高（P≤0.05）会增加亲鱼的繁殖力。饲料中磷的来源对产蛋性能和蛋重没有显着影响。然而，与MSP日粮相比，MBM日粮增加了绝对繁殖力和总产蛋量（P≥0.05）。同时，以MSP饲喂的亲鱼显示出最大的蛋重。该结果表明，在池塘水养系统下在绿水中饲养的尼罗罗非鱼亲鱼需要饲料中的磷才能达到最佳产卵性能。

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