中华绒螯蟹幼蟹维生素C营养需求研究

陈立侨; 艾春香; 温小波; 刘晓玲; 江洪波

中华绒螯蟹幼蟹维生素C营养需求研究

华东师范大学, 生命科学学院, 上海, 200062

基金项目: 国家自然科学基金资助项目(30271012);高等学校博士点专项基金资助项目(2000026903);教育部回国留学人员科研启动基金部分资助项目

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出版历程
- 收稿日期: 2002-04-10
- 修回日期: 2002-06-10

Studies on vitamin C requirements of the juvenile crab (Eriocheir sinensis)

College of Life Science, East China Normal University, Shanghai 20062, China

摘要

摘要: 在每100g等氮、等能纯化饲料中分别添加0,100,200,400,800,1 000mg维生素C(Vc)多聚磷酸酯(LAPP),用这样配制成的试验饲料饲喂已淡化5d的河蟹大眼幼体及后续幼蟹25d,探讨Vc对大眼幼体和幼蟹生长、存活、蜕壳频率及抗逆性的影响,同时探明幼蟹对Vc的适宜需求量,结果表明,饲料Vc添加量为100~400mg/100g时,可以保证幼蟹正常生长、存活和蜕皮,尤其以投喂添加Vc200mg/100g(C₂组)和400mg/100g(C₃组)饲料的Ⅲ期幼蟹增重率、存活率和平均蜕皮频率较高,其中C₂组(上述各指标值)分别为516.18%,62.83%,2.58,C₃组分别为458.89%,66.17%,2.61;饲料中缺少Vc时(如C₀组),Ⅲ期幼蟹的增重率、存活率和平均蜕皮频率最低,分别为265.31%,26.67%和2.26.饲料中Vc的添加量达到800mg/100g(C₄)和1 000mg/100g(C₅)时,幼蟹的蜕皮反而受到抑制,平均蜕皮频率降低,蜕皮周期延长,且存活率降低,到Ⅲ期幼蟹的增重率、存活率和平均蜕皮频率在C₄组分别为355.7%,31.33%,2.39,在C₅组分别为307.53%,28.56%,2.19.此外,各处理组幼蟹对抗逆性影响的试验表明,在一定的范围内,饲料中添加Vc能提高幼蟹的耐低氧能力和耐pH突变能力,而对耐盐度突变能力没有明显的影响.综合上述结果可以得出,为保持幼蟹良好生产性能,饲料中添加的Vc?
- 中华绒螯蟹幼蟹 /
- 维生素C /
- 营养需求 /
- 抗逆性
Abstract: L-ascorhy l-2-polyphosphate (LAPP) was used as a vitam in C source to study the dietary Vc requirements of the juvenile crabs,Eriocheir sinensis.A cultured trial for 25 d was performed using six levels of LAPP at 0(C₀),100(C₁),200(C₂),400(C₃),800(C₄) and 1 000 mg/100 g(C₅) diet in isonitrogen and isoenergy purified diets.Each treatment was run in triplicate.The results show tha tthe normal growth,survival and ecdysis of the juvenile crabs were maintained when purified diets were supple mented with 100~400 mg /100g diet vitam in C.The weight growth rate,survival rate and averagemolt frequency of juvenile crabs at Stages Ⅱ and Ⅲ fed with C₂ and C₃ are higher than those of crabs fed with C₀,C₁,C₄ and C₅.In the range from 200 mg/100 g diet to 400 mg/100g diet,the weight growth rate,survival rate and ecdysis frequency of the juvenile crabs at Stages Ⅱ and are Ⅲ are increased with increase of vitam in C content,when juvenile crabs at Stage Ⅲ fed with C₂ and C₃,the results are 516.18%,458.89%,62.83%,66.17%,2.58 and 2.61 respectively.Performance of juvenile crabs at Stage Ⅲ are significantly reduced by feeding Vc-deficient diets.Those data of the C₀ are 265.31%,26.67% and 2.26 respectively.Diets that are excessively supplem ented in Vc do not perform better.When diets were supplemented Vc at 800~1 000 mg/100g diet,the weight growth rate,survival rate and ecdysis frequency of the juvenile crabs at Stages Ⅱ and Ⅲ are lowered.The results of the juvenile crabs evaluations at Stage Ⅲ are 355.7%,307.53%,31.33%,28.56%,2.39 and 2.19 respectively.The anti-stress trial results also demonstrate that when the juvenile crabs fed with the diets supplemented with Vc their ability to endure hypoxia and pH saltation was enhanced(P < 0.05).However the Vc levels do not show significant effects on to lerance for salinity saltation of the juvenile crabs (P > 0.05).In conclusion,The optmial vitam in C levels for juvenile crabs are 200~400 mg/100g diet.Vitam in C can also increase the anti-stress abilities of juvenile crabs.
- juvenile crab of (Eriocheir sinensis) /
- vitam in C /
- nutritional requirement /
- anti-stress

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