红螯螯虾引种养殖试验     

王世雄  付佩胜 《齐鲁渔业》1998,15(5):28-30

从澳大利亚直接引起红螯螯虾１万尾,放入１．５亩土池,进行鱼虾混养,池底投放隐蔽物,定期测定水质和生长情况,投喂颗粒饵料,螺蛳,小杂鱼虾,豆渣,使用塑料薄膜防逃,经过１１８天饲养,出池对虾１６５．９２ｋｇ,平均尾重３０．９ｇ成活率６４．９８％,试验证明,红螯螯虾最适生长水温２２～３２℃放养密度２０尾／ｍ＾２不影响生长,混养品种以中上层滤食性鱼类为宜,北方地区因适温期短,应放养尾重２ｇ以上的苗种。  相似文献   

罗氏沼虾高产养殖技术试验     

徐乐宗  丁增和 《齐鲁渔业》1998,15(1):32-33

进行了北方地区提高罗氏沼韪养殖效益试验。采取虾苗暂养,控制水深,大棚保温,驯喂高含量蛋白质的人工饵料,加强管理和疾病防治等措施,在总面积２０亩的试验池中,共产罗氏沼虾２５１０ｋｇ,平均亩产１２５．５ｋｇ,出池规格３２尾／ｋｇ,平均每尾体长１５．３ｃｍ,商品率９８．５％。  相似文献   

A potential application of shrimp antilipopolysaccharide factor in disease control in aquaculture          下载免费PDF全文

Premruethai Supungul  Phattarunda Jaree  Kunlaya Somboonwiwat  Wisarut Junprung  Porranee Proespraiwong  Rapeepat Mavichak  Anchalee Tassanakajon 《Aquaculture Research》2017,48(3):809-821

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Evaluation of amaranth (Amaranthus caudatus L.) and quinoa (Chenopodium quinoa) protein sources as partial substitutes for fish meal in Litopenaeus vannamei grow‐out diets          下载免费PDF全文

César Molina‐Poveda  Ricardo Cárdenas  Miguel Jover 《Aquaculture Research》2017,48(3):822-835

Two groups of isonitrogenous diets formulated by replacing 15%, 25%, 35% and 45% of fish meal protein by amaranth meal and quinoa meal were used to evaluate the performance of Litopenaeus vannamei. Growth showed significant reduction (P < 0.05) in the group of shrimp fed with amaranth diets, with diet A15 showing the best specific growth rate (SGR = 2.81% day^?1), but after the control diet AQ0 (3.07% day^?1). Diet A15 had significantly (P < 0.05) the best digestibility of dry matter (79.7%) and protein (88.4%) without differences compared to control diet AQ0 (75.1% and 85.2%). Replacement with quinoa meal at any level tested did not significantly affect (P > 0.05) the shrimp growth performance. Shrimp fed with quinoa diets showed better SGR (3.05% day^?1) than those shrimp fed with amaranth (2.56% day^?1). No differences in feed conversion ratio appeared in either of the protein sources, but quinoa diets presented a better average (3.13) than amaranth diets (4.01). The apparent digestibility of dry matter and protein for quinoa diets was similar for all diets, but they were statistically different (P < 0.05) from the control diet. We conclude that quinoa meal can replace fishmeal up to 45%, whereas it can be replaced with amaranth meal up to 15%, without adverse effects on growth and survival.  相似文献   

藤壶壳应用于对虾养殖尾水处理的初步研究     

章霞  柳敏海  徐志进  李凌刚  叶剑英  傅荣兵 《渔业现代化》2017,(3):52-58

为研究藤壶壳作为生物滤料应用于对虾养殖尾水处理的可行性,通过比较陶瓷环组、聚乙烯(PE)组、藤壶壳组和藤壶壳+PE组4个不同滤料组合的生物挂膜效果,初步评价藤壶壳作为生物滤料的应用价值;通过设定藤壶壳的不同填充率(滤料体积∶尾水体积),研究填充率对对虾塘养殖尾水处理效果的影响。结果显示:藤壶壳组挂膜成功时间较早,水处理效果好;藤壶壳不同填充率对水处理中悬浮物、氨氮(NH_4~+-N)、亚硝酸盐氮(NO_2~--N)的处理效果有显著影响,A、B、C、D各组悬浮物在6 h时的去除率分别达(68.7±4.3)%、(74.5±7.0)%、(80.9±4.2)%和(82.1±3.8)%,其中B、C、D组去除率显著高于A组(P0.05);4组的氨氮最终去除率都在92.1%以上,以0.1 mg/L为基准,A组氨氮降至此质量浓度以下需要时间5 d,B、C组4 d,D组3 d,降解速率为D组C组B组A组;4组的亚硝酸盐氮最终去除率都在98.0%以上,以0.1 mg/L为基准,A组的亚硝酸盐氮降至此质量浓度以下需要时间为6 d,B、C、D组需要5 d,降解速率为D组C组B组A组。研究表明:藤虎壳作为生物滤料应用于对虾养殖尾水处理,效果良好,且随着填充率的增大,处理效率增强;但考虑到经济成本和应用实际,建议藤壶壳填充率为2∶9。  相似文献   

凡纳滨对虾虾肉和虾头中风味物质的比较   总被引：1，自引：0，他引：1  

贠三月  邱伟强  蒋晨毓  陈舜胜  余小亮  代欢欢 《水产学报》2017,41(6):907-918

为充分利用和开发虾头资源从而提高对虾经济附加值,同时探讨熟制对虾类风味产生的影响,以凡纳滨对虾生、熟虾肉和生、熟虾头为研究对象,利用氨基酸自动分析仪、高效液相色谱法(HPLC)和气相色谱—质谱联用法(GC/MS)分别对氨基酸、呈味核苷酸、挥发性物质和营养成分的含量进行检测。结果显示,虾头中的蛋白质含量显著高于虾肉,熟制会使粗蛋白的含量下降,但变化差异不显著;虾头中必需氨基酸(EAA)含量和游离氨基酸总量(TFAA)显著高于虾肉,二者主要游离氨基酸种类相同(甘氨酸、精氨酸、脯氨酸、丙氨酸和苏氨酸),对虾头呈味有贡献的游离氨基酸种类更丰富;虾头和虾肉中肌苷酸(IMP)含量最高,腺苷酸(AMP)次之,二者的味道强度值(TAV)均大于1,对鲜味贡献较大。GC/MS共检测出88种挥发性物质,虾肉和虾头中分别特有29种和18种,挥发性物质种类和含量的差异形成虾肉和虾头的特殊气味,熟制产生大量的醛类、酮类和芳香类物质。研究表明,凡纳滨对虾虾肉和虾头中营养物质、游离氨基酸、呈味核苷酸、挥发性物质的组成和含量对风味的贡献存在显著差异。  相似文献   

Evaluation of two probiotics used during farm production of white shrimp Litopenaeus vannamei (Crustacea: Decapoda)          下载免费PDF全文

Ramón Franco  Leonardo Martín  Amilcar Arenal  Dayamí Santiesteban  Jorge Sotolongo  Hector Cabrera  Jaime Mejías  George Rodríguez  Angela G Moreno  Eulogio Pimentel  Nestor M Castillo 《Aquaculture Research》2017,48(4):1936-1950

This study examined the effects of Bacillus licheniformis strain CIGBC‐232, isolated from the gut of shrimp Litopenaeus vannamei and having antagonistic activity against Vibrio harveyi, on the immunity and larval quality of L. vannamei at various ontogenetic stages, in two separate experiments: (1) PL2 to PL17 exposed to the strain CIGBC‐232 under laboratory conditions (2) zoea I to PL8 exposed to the strain CIGBC‐232 and EPICIN 3W probiotics under farming conditions. The first experiment showed that phenoloxidase, peroxidase and superoxide dismutase activities were improved in animals grown with CIGBC‐232 compared to the untreated control. In tests, the resistance to osmotic stress was also enhanced. During the second experiment, animals treated with CIGBC‐232 exhibited significant (P < 0.05) increases in phenoloxidase activity (30–40% higher in zoea I–II, mysis II–III and PL 2–7) and in the respiratory burst (30% higher from PL 2 to 7) as compared to those animals that received EPICIN 3W. There was no significant difference in the lectins and agglutinins (except in PL1, 6 and 7), in peroxidase and superoxide dismutase activities, in the resistance to osmotic stress, nor in the survival rate among treatments. CIGBC‐232 treatment was able to reduce, the level of presumptive Vibrio spp. with respect to EPICIN 3W treatment in the tank water as well as in animals. At the end of both experiments, the growth of shrimp, i.e. weight and length was increased by CIGBC‐232 treatment. This study showed the probiotic effect of CIGBC‐232, which appeared to have a better probiotic performance than EPICIN 3W treatment.  相似文献   

Recombinant PirA‐like toxin protects shrimp against challenge with Vibrio parahaemolyticus,the aetiological agent of acute hepatopancreatic necrosis disease          下载免费PDF全文

A I Campa‐Córdova  A F León‐Gallo  A Romero‐Maldonado  A C Ibarra‐Serrano  S Rosales‐Mendoza  I Hirono  C Angulo 《Journal of fish diseases》2017,40(11):1725-1729

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一株高效脱氮菌株的分离鉴定及应用潜力分析   总被引：1，自引：1，他引：0  

张家顺  吕娜  田长城  李贇  潘鲁青 《中国水产科学》2017,24(4):757-765

为了获得对虾养殖池塘中高效去除亚硝态氮和氨氮的菌株,采用富集培养分离的方法,从养殖水体中筛选得到1株去除亚硝态氮和氨氮的菌株,培养24 h后的去除率分别为96.17%和88.27%,编号为O-11。基于形态学、分子生物学及生理生化鉴定结果,明确了该菌株基本生物学特征以及可能的分类地位。分离菌株在20~30℃时有利于亚硝态氮的去除,而温度为20~35℃时对氨氮的去除效果较好;分离菌株在盐度小于30的环境中对亚硝态氮的去除能力受盐度变化的影响不大;在碱性环境中分离菌株对氨氮的去除能力较高。安全性检验可知,在菌浓度为10~5~10~8 cfu/mL的菌株O-11对凡纳滨对虾(Litopenaeus vannamei)是安全的,且在菌浓度为10~5 cfu/mL时能显著提高对虾的存活率,促进对虾生长。这说明,分离菌株O-11在水产养殖水体中有害氮脱除方面具有潜在的应用价值。  相似文献   

Substituting fishmeal with mixtures of wheat,corn and soya bean meals in diets for the white leg shrimp,Litopenaeus vannamei (Boone): effect on production parameters and preliminary economic assessment          下载免费PDF全文

Manuel García‐Ulloa  Alfredo Hernandez‐Llamas  Styll de Jesús Armenta‐Soto  Hervey Rodríguez‐González 《Aquaculture Research》2017,48(9):4864-4873

We analysed the effect on production and economic performance of juvenile Litopenaeus vannamei of isoproteic diets substituting fishmeal by 25%, 50%, 75% and 100% with mixtures of wheat, soya bean and cornmeals. In a laboratory trial, 10 juveniles m^?2 (1.1 ± 0.1 g) were reared in 60‐L plastic containers using a recirculation system for 90 days. Three replicates were used to test each diet. A commercial diet serving as a reference and the diet with the highest content of essential amino acids (50% substitution, 6.46 ± 1.1 g) produced significantly higher shrimp final weight (7.12 ± 0.9 g, P < 0.05). There were not significant differences in specific growth rate and mean survival (85.9 ± 0.2%, P > 0.05). In a pond trial, 10 shrimp m^?2 (1.08 ± 0.3 g) were cultivated in 1.5 m^?3 cages for 35 days, testing the diets in triplicate. Final weight was significantly higher (P < 0.05) when 100% substitution was used (10.89 ± 0.24 g), while survival did not differ significantly among diets (P > 0.05). The optimal level of substitution was estimated at 86.0%. Apparently, nutrients contained in the diets combined well with natural feed available in the pond, up to a point where 7.3% of fishmeal inclusion is recommended. An economic analysis showed that 100% substitution produced the best results. We conclude that mixtures of wheat, corn and soya meals are potential alternatives to replace fishmeal effectively in diets for L. vannamei.  相似文献