Effects of vitamin C inclusion in practical diets on survival and growth of juvenile crayfish (Pacifastacus leniusculus Dana, Astacidae) from the onset of exogenous feeding

被引：13

作者：

Celada, J. D. ^{[1
]}

Fuertes, J. B. ^{[1
]}

Carral, J. M. ^{[1
]}

Saez-Royuela, M. ^{[1
]}

Gonzalez, A. ^{[1
]}

Gonzalez-Rodriguez, A. ^{[1
]}

机构：

[1] Univ Leon, Dept Anim Prod, Fac Vet, E-24071 Leon, Spain

来源：

AQUACULTURE NUTRITION | 2013年 / 19卷 / 01期

关键词：

astacid crayfish; juvenile rearing; Pacifastacus leniusculus; practical diet; vitamin C; WATER-SOLUBLE VITAMINS; SIGNAL CRAYFISH; MARSUPENAEUS-JAPONICUS; PENAEUS-MONODON; KURUMA SHRIMP; GRASS SHRIMP; REQUIREMENT; SUPPLEMENT; MANAGEMENT; VANNAMEI;

D O I：

10.1111/j.1365-2095.2012.00949.x

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

The aim of this study was to evaluate the effects of practical diets with different levels of vitamin C on survival and growth of juvenile crayfish (Pacifastacus leniusculus). An 80-day trial was conducted with stage 2 juveniles from the onset of exogenous feeding. Four practical diets differing in the content of l-ascorbyl-2-monophosphate-Na were prepared: 0, 0.2, 0.4 or 0.8 g kg-1 diet. Each diet was tested on grouped or individually isolated crayfish. Diets had no significant effects on survival of crayfish held in groups (average: 73.1%) neither on the isolated ones (average: 90%). Crayfish fed the diet with 0.2 g kg-1 of l-ascorbyl-2-monophosphate-Na had the highest growth (groups: 13.64 mm carapace length (CL), 542.4 mg weight; isolated: 17.05 mm CL, 1213.2 mg weight) and the lowest feed conversion ratio (average of grouped and isolated: 0.99). This study provides the first data on vitamin C requirements of freshwater crayfish. A level of 0.2 g l-ascorbyl-2-monophosphate-Na kg-1 diet (0.07 g ascorbic acid equivalent) can be recommended for juvenile P. leniusculus during the first period of intensive rearing.

引用

页码：110 / 116

页数：7

共 31 条

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Ackefors H., 1994, FRESHWATER CRAYFISH, P157

[2]

Cahu C., 2004, NUTR ALIMENTACION PE, P303

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