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Aquaculture Performance Comparison of Sunshine Bass, Palmetto Bass, and White Bass

机译：阳光鲈鱼，棕鲈鱼和白鲈水产养殖性能比较

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Aquaculture performance of phase II and phase III sunshine bass (a female white bass Morone chrysops × male striped bass M. saxatilis), palmetto bass (a female striped bass × male white bass), and white bass were evaluated in separate 12-week yield trials conducted in indoor recirculating-water systems. Phase II sunshine bass, palmetto bass, and white bass had mean initial weights of 40.0 g, 39.7 g, and 41.0 g, respectively. A diet containing 40.2% crude protein (CP) was fed to fish twice daily at a rate of 3% body weight/d. At the end of the trial, sunshine bass and white bass had mean weights of 124.2 g and 126.0 g, respectively and were significantly larger than palmetto bass (93.5 g mean weight). Phase II sunshine bass and white bass outperformed palmetto bass by having higher relative growth (h), mean daily growth, and relative weight, as well as better feed conversion ratios (weight of food fed/weight gained). Survival was 100% for all three taxonomic groups. In the phase III study, mean initial weights for sunshine bass (177.5 g) and palmetto bass (185.9 g) were similar but significantly greater than the mean initial weight of white bass (153.8 g). In this trial, fish were fed a floating trout chow (44.1% CP) to satiation twice per day. At the termination of the study, sunshine bass (611.1 g) and palmetto bass (517.8 g) had significantly greater mean weights than white bass (254.4 g). Significant differences among all three taxonomic groups were found for h and for mean daily growth rate. Both crosses of hybrid striped bass had lower feed conversion ratios when compared with white bass. Relative weight values (ratio of a fishu27s weight to the weight of a standard fish of the same length) for sunshine bass were significantly greater than values for palmetto bass and white bass. Survival rates ranged from 98% to 100% for the three taxonomic groups. Differences were not detected between sunshine bass and palmetto bass for eviscerated percentage, headed and eviscerated percentage, or dressout percentage. Sunshine bass outperformed palmetto bass at phase II and phase III sizes under the conditions of this study.
机译：在分别的12周产量中评估了II期和III期阳光鲈鱼（雌性白鲈Morone chrysops×雄性条纹鲈M. saxatilis），palmtoto鲈鱼（雌性条纹鲈x雄性白色鲈）和白色鲈的水产养殖性能在室内循环水系统中进行的试验。第二阶段的日照低音，棕榈低音和白色低音的平均初始重量分别为40.0 g，39.7 g和41.0 g。将含有40.2％粗蛋白（CP）的饮食以每天3％体重的速率每天喂两次鱼。在试验结束时，日照低音和白色低音的平均重量分别为124.2 g和126.0 g，并且显着大于棕榈低音（平均重量93.5 g）。第二阶段的阳光鲈鱼和白色鲈鱼具有较高的相对生长率（h），平均日生长量和相对重量，以及更好的饲料转化率（饲料重量/增重），因此优于棕榈鲈。这三个分类组的生存率为100％。在III期研究中，日照鲈鱼（177.5 g）和棕榈鲈鱼（185.9 g）的平均初始重量相似，但明显大于白鲈鱼的平均初始重量（153.8 g）。在该试验中，每天两次给鱼类喂浮游鳟鱼（44.1％CP）饱食。研究结束时，阳光低音（611.1 g）和棕榈低音（517.8 g）的平均权重明显高于白色低音（254.4 g）。在所有三个分类组中，h和平均日增长率均存在显着差异。与白色低音相比，混合条纹低音的两个交叉具有较低的饲料转化率。阳光鲈鱼的相对重量值（一条鱼的重量与相同长度的标准鱼的重量之比）显着大于棕鲈鱼和白鲈鱼的重量值。三个分类组的存活率从98％到100％不等。未检测到阳光鲈鱼和棕榈鲈鱼的去内脏百分比，去头和去内脏百分比或着装百分比之间的差异。在此研究条件下，阳光低音在II期和III期的表现优于手摇低音。

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