本文關鍵詞：投喂皇竹草和生物絮團草魚稚魚生長性能對比及營養(yǎng)成分評價，由筆耕文化傳播整理發(fā)布。

投喂皇竹草和生物絮團草魚稚魚生長性能對比及營養(yǎng)成分評價

Evaluation of Nutrient Composition and Comparison of Growth Performance of Juveniles Grass Carp, Ctenopharyngodon idellus, Fed with Bio-floc and Pennisetum sinese

[1] [2] [3]

Yu Lingyun, Liu Banghui, Wang Guangjun （1Key Laboratory of Tropical ＆ Subtropical Fishery Resource Application ＆ Cultivation, Ministry of Agriculture, Pearl River Fisheries Re

[1]中國水產(chǎn)科學研究院珠江水產(chǎn)研究所/農(nóng)業(yè)部熱帶亞熱帶水產(chǎn)資源利用與養(yǎng)殖重點實驗室,廣州510380; [2]廣東省海洋工程職業(yè)技術學校,廣州510320

文章摘要：為了評價生物絮團作為草魚稚魚餌料的營養(yǎng)價值,以草魚（Ctenopharyngodon idellus）稚魚為研究對象,以皇竹草（Pennisetum sinese）為對照,養(yǎng)殖60天后測定草魚稚魚的生長指標、肌肉營養(yǎng)成分組成與含量。結果表明：生物絮團組草魚平均尾末質量與皇竹草組相比提高了1.14倍,生物絮團組草魚的體長、成活率和肥滿度均優(yōu)于皇竹草組。生物絮團組比皇竹草組的草魚肌肉常規(guī)營養(yǎng)成分中的粗蛋白和碳水化合物顯著差異（P〈0.05）,但粗脂肪和灰分含量基本一致。另外,生物絮團組和皇竹草組草魚肌肉氨基酸中均含有16種常規(guī)氨基酸和4種鮮味氨基酸（天冬氨酸、谷氨酸、甘氨酸和丙氨酸）,其常規(guī)氨基酸總質量分數(shù)分別為（17.1±1.24）%和（16.803±1.030）%,氨基酸各組成成分均無顯著變化;生物絮團組草魚肌肉中多不飽和脂肪酸（PUFA）和高不飽和脂肪酸（HUFA）總數(shù)分別為（32.2±4.05）%和（34.61±4.08）%,極顯著高于皇竹草組（P〈0.01）。可見,生物絮團養(yǎng)殖模式不僅能提高草魚稚魚的生長性能,而且能在不改變肌肉氨基酸組成和鮮味的條件下明顯提高其肌肉中營養(yǎng)價值中的不飽和脂肪酸含量,因此,生物絮團可以作為草魚稚魚的一種新型優(yōu)質餌料。

Abstr：To evaluate the value of biofloc technology nutrition, the growth traits and nutritional composition of muscle of grass carp farmed about 60 days were analyzed in the model of biofloc technology （BFT） （as the experimental group） and Pennisetum sinese Roxb （as the control group）. The result showed that the ratio of weight gain of grass carp using BFI＂ were 1.14 times than that of the control group, and the body length, survival rate and condition factor of grass carp were more than that of the control group. Crude protein and carbohydrate of muscle between the BFT and grass group were significantly different （P〈0.05）, however, crude fat and ash content of muscle of grass carp were basically identical. In addition, there were 16 kinds of conventional amino acids and 4 kinds of delicious amino acids （Asp, Glu, Gly, Ala ）. The total contents of amino acid were （17.1± 1.24）% and （16.803± 1.030）% in 2 groups, respectively, but there were no significant difference between them（P〉0.05）. The total contents of PUFA and HUFA were （32.20±4.05） % and （34.61± 4.08） % in the experimental group, respectively; which was significantly higher than that in the control group （P〈0.01）. In summary, the model of BFT not only improve the growth performance of the juvenile grass carp, but also increase the nutritive value of muscle under no change of the amino acid composition and delicious amino acid. So, BFT may serve as a new type of high quality bait of grass carp＇ s juveniles.

文章關鍵詞：

Keyword：:biofloc technology grass carp growth traits muscle amino acid

課題項目：國家科技支撐計劃“草魚新品種選育”（2012BAD26802）、“池塘優(yōu)勢生物群落調控管理技術研究”（2012BAD25801）;國家高技術研究發(fā)展計劃項目“草魚重要經(jīng)濟性狀相關基因的克隆及功能驗證”（2011AA100403）.

  本文關鍵詞：投喂皇竹草和生物絮團草魚稚魚生長性能對比及營養(yǎng)成分評價，，由筆耕文化傳播整理發(fā)布。