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首页> 外文期刊>Journal of the World Aquaculture Society >Evaluation of practical diets with various levels of dietary protein and animal protein for pond-raised channel catfish Ictalurus punctatus.
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Evaluation of practical diets with various levels of dietary protein and animal protein for pond-raised channel catfish Ictalurus punctatus.

机译：池塘养殖通道鲶咽部膳食蛋白和动物蛋白的实用饮食评估。

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摘要

Three levels of dietary protein (26, 28 or 32%) and 4 levels of animal protein (0, 2, 4 or 6%) were evaluated in a factorial experiment for pond-raised channel catfish using practical-type extruded feeds. Meat, bone, and blood meal (65% protein) wasused as the animal protein source. Channel catfish fingerlings (69 g) were stocked into forty-eight 0.04-ha ponds at 24 700 fish/ha. Four ponds were used for each dietary treatment. Fish were fed once daily to apparent satiation for 158 days. No differences were observed in weight gain, feed intake, feed conversion efficiency, survival and haematocrit values of channel catfish fed diets containing various levels of dietary protein and animal protein. Inclusion of animal protein in the diet did not affect fish dressout, percentage visceral fat or fillet composition. Comparison of means pooled by dietary protein without regard to animal protein showed that fish fed diets containing 26% protein had a lower percentage dressout than fish fed higher proteindiets (55.4 vs. 56.3%). Fish fed the 32% protein diet had lower visceral fat than those fed the 26% or 28% protein diet (2.9 vs. 3.6% or 3.4%). Fillet fat was lower for fish fed the 32% protein diet than for fish fed the 26% protein diet (5.8 vs. 7.1%).Fillet fat in fish fed the 28% protein diet (6.5%) was not different from fish fed either 26 or 32% dietary protein. No differences were detected in fillet protein, moisture, and ash concentrations among fish fed diets containing various concentrationsof protein. There were no interactions between dietary protein and animal protein for any variables. Results from the present study indicate that animal protein can be eliminated from diets for grow out of channel catfish fed to apparent satiation usingdiets containing 26 to 32% CP.
机译：在使用实际型挤出饲料的池塘凸起通道鲶鱼的因子实验中评估了三种膳食蛋白（26,28或32％）和4级动物蛋白（0,2,4或6％）。肉，骨和血粉（65％蛋白质）被用作动物蛋白质来源。通道鲶鱼鱼（69克）在24 700张鱼/公顷的24 700个池塘中储存进入四十八个0.04海池塘。每种饮食治疗都使用了四个池塘。每天喂食一次以表达饱食158天。在体重增加，进料摄入，饲料转化率，存活率和血细胞比容的喂食含有各种膳食蛋白和动物蛋白质的饮食中没有差异。在饮食中包含动物蛋白质不会影响鱼锯齿，百分比内脏脂肪或圆角组成。膳食蛋白质汇总的手段的比较表明，含有26％蛋白的鱼类饲料的饮食比喂养更高的蛋白导管的鱼（55.4 vs.56.3％），百分比较低。喂养32％蛋白质饮食的鱼的内脏脂肪比喂食26％或28％蛋白质饮食（2.9对3.6％或3.4％）。喂养32％蛋白质饮食的鱼片比喂养26％蛋白质饮食的鱼（5.8对7.1％）。喂食28％蛋白质饮食（6.5％）与喂养的鱼类的鱼片脂肪膳食蛋白26或32％。在喂食含有各种浓度的蛋白质的鱼类饲料中的鱼蛋白，水分和灰分浓度没有差异。对于任何变量，膳食蛋白和动物蛋白质之间没有相互作用。本研究结果表明，动物蛋白可以从饲喂到表观饱食鲶鱼的饮食中消除动物蛋白，使用含有26％至32％CP的表观饱食。

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