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首页> 外文期刊>Indian Journal of Ecology >Efficacy of Duckweed - Spirodela in Carp Diet
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Efficacy of Duckweed - Spirodela in Carp Diet

机译：浮萍-Spirodela在鲤鱼饮食中的功效

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Experiments were conducted to assess the efficacy of dried Spirodela in carp feed. Spirodela was cultured in plastic pools using cow dung and poultry dropping as manure, which was harvested periodically and sun dried to make Spirodela powder. Experimental diets were prepared by incorporating Spirodela powder @ 20% in the control diet (de-oiled rice bran -40%, de-oiled mustard cake -40% and meat cum bone meal-20%- D-l) by replacing 50% of rice bran (D-ll) or 50% of mustard cake (D-lll) or 100% of meatcum bone meal (D-IV). These diets were used for semi-intensive rearing of common carp, Cyprinus carpio for 90 days. Water quality (temperature, pH, dissolved oxygen and total alkalinity) arid growth increment of fish was recorded after every 15 days. The fingerlings of C. carpio fed with diets D-ill and D-IV recorded significantly higher weight gain than the fish fed on D-l and D-ll diet. Better food conversion ratio (FCR) and higher protein efficiency ratio (PER) were observed in fish fed with diet D-III (FCR= 0.89, PER= 3.80) followed by D- IV (FCR= 0.92, PER= 3-76), D- ti (FCR= 1.13, PER= 3.25) and D-l (FCR= 1.20, PER= 2.99). As compared to control (D-I) diet, 74.14 and 70.80 per cent higher yield was recorded with diets D-lll and D-IV, respectively. Inclusion of dried Spirodela @ 20% in carp feed by replacing 50% of , mustard cake (D-lll) or 100% of meat cum bone meal (D-IV) not only resulted in higher weight gain, but also lowered the feed cost by 15.94% and 49.27%, respectively and hence holdsgreat potential for utilization in carp feed.
机译：进行实验以评估干燥的螺旋藻在鲤鱼饲料中的功效。螺旋藻在塑料池中培养，使用牛粪和家禽粪便作为粪便，定期收获并晒干，制成螺旋藻粉。通过在对照饮食中掺入20％的Spirodela粉（去油米糠-40％，去油的芥末糕-40％和肉类骨粉-20％-Dl）来制备实验饮食。麸皮（D-11）或50％的芥末蛋糕（D-11）或100％的肉骨粉（D-IV）。这些日粮用于鲤科鲤的半精养90天。每15天记录一次鱼的水质（温度，pH，溶解氧和总碱度）及其生长增量。饲喂D-ill和D-IV日粮的鲤鱼鱼种的体重增加明显高于饲喂D-1和D-II日粮的鱼。在饲喂日粮D-III（FCR = 0.89，PER = 3.80）之后是D-IV（FCR = 0.92，PER = 3-76）的鱼中观察到更好的食物转化率（FCR）和更高的蛋白质利用率（PER）。 ，D-ti（FCR ＝ 1.13，PER ＝ 3.25）和D1（FCR ＝ 1.20，PER ＝ 2.99）。与对照（D-1）日粮相比，D-III和D-IV日粮分别收获74.14％和70.80％。通过代替50％的芥末蛋糕（D-lll）或100％的肉和骨粉（D-IV）来替代鲤鱼饲料中的Spirodela @ 20％，不仅增加了体重，而且降低了饲料成本分别增加了15.94％和49.27％，因此具有在鲤鱼饲料中利用的巨大潜力。

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