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首页> 外文期刊>North American Journal of Aquaculture >Evaluation of hydrolyzed poultry feathers as a dietary ingredient for pond-raised channel catfish.
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Evaluation of hydrolyzed poultry feathers as a dietary ingredient for pond-raised channel catfish.

机译：评价水解的家禽羽毛作为池塘养channel鱼的饮食成分。

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摘要

The present study examined the use of hydrolyzed poultry feathers (HPF) as a replacement for soybean meal in diets for pond raised Channel Catfish Ictalurus punctatus. Four isonitrogenous (28% crude protein) diets were evaluated that contained 0, 5, 10, or 15% HPF. Fingerling Channel Catfish (mean+or-SD initial weight was 47.5+or-2.2 g) were stocked into twenty 0.04-ha earthen ponds at a rate of 14,830 fish/ha. Fish were fed once daily to apparent satiation for 140 d. No significant differences were observed for weight gain, feed conversion ratio (FCR), and survival among fish fed various levels of HPF. There were also no significant differences in net yield of fish fed diets containing 0, 5, and 10% HPF, but net yield of fish fed a diet containing 15% HPF was significantly lower than that of fish fed the control diet. Fish on diets containing 5% HPF and above were fed significantly less feed than fish fed the control diet. Regression analysis showed that total amount of diet fed, net yield, and weight gain decreased linearly as dietary HPF levels increased. Based on weight gain and net yield data, 5% HPF with supplemental lysine may be used in Channel Catfish diets without marked impact on fish growth performance. However, carcass and fillet yield were significantly reduced in fish fed diets containing 5% HPF and higher. Fillet protein generally decreased and fillet fat increased with increasing dietary HPF levels.
机译：本研究研究了使用水解家禽羽毛（HPF）代替池塘饲养的槽Channel鱼Ictalurus punctatus日粮中的豆粕。评估了四种等氮（粗蛋白含量为28％）的日粮，它们的HPF含量分别为0、5、10或15％。将鱼种沟Cat鱼（平均重量或标准重量初始重量为47.5+或-2.2 g）以14,830条鱼/公顷的速度放养到20个0.04公顷的土池中。每天喂鱼一次，使其明显饱食140天。饲喂不同水平HPF的鱼的增重，饲料转化率（FCR）和存活率均未观察到显着差异。饲喂0、5和10％HPF的鱼饲料的净产量也没有显着差异，但是饲喂包含15％HPF的鱼饲料的净产量显着低于对照饲喂的鱼。饲喂含5％HPF及以上饲料的鱼比饲喂对照饲料的鱼饲料少得多。回归分析表明，随着日粮HPF水平的提高，饲喂的饲料总量，净产量和体重增加呈线性下降。根据体重增加和净产量数据，在Channel鱼饲料中可使用5％HPF和补充赖氨酸，而对鱼的生长性能没有明显影响。但是，在含有5％或更高HPF的鱼饲料中，car体和鱼片的产量显着降低。随着日粮HPF水平的提高，鱼片蛋白质通常减少，而鱼片脂肪增加。

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