大黄鱼养殖技术规范

大黄鱼养殖技术规范NY/T5061—2002无公害食品大黄鱼养殖技术规范食品商务网2005-12-3016:40:001范围本标准规定了大黄鱼(Pseudosciaenacrocea)亲鱼培育、人工育苗、鱼种培育、食用鱼饲养和鱼病防治。本标准适用于无公害大黄鱼的网箱和池塘养殖。2规范性引用文件下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有的修改单(不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成 协议 离婚协议模板下载合伙人协议 下载渠道分销协议免费下载敬业协议下载授课协议下载 的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准。NY5052无公害食品海水养殖用水水质NY5071无公害食品渔用药物使用准则NY5072无公害食品渔用配合饲料安全限量3亲鱼培育3.1亲鱼选择3.1.1来源来源于持有国家发放的大黄鱼生产许可证的原种场或良种场;严禁近亲繁殖的后代留作亲鱼。亲鱼体质健壮，无病、无伤、无畸形。跨区调动须经检疫。3.1.2比例形状体长/体高为3.7,4.1，体长/头长为3.9,4.3，尾柄长/尾柄高为3.1,3.9，头长/吻长为4.4,4.9，头长/眼径为3.7,4.1。3.1.3规格、配比与数量2龄鱼雌鱼800g/尾以上，雄鱼400g/尾以上;2龄鱼雌鱼1200g/尾以上，雄鱼600g/尾以上。雌、雄亲鱼配比以2?1为宜。亲鱼数量50尾以上。3.1.4使用年限亲鱼允许使用到6龄。3.2亲鱼运输常用活水船并在风浪不大时运输，密度40kg/m3左右。亦可使用水桶、帆布箱或塑料薄膜袋充氧运输，密度为20kg/m3以上，且不宜10h以上长途运输。3.3海区网箱培育3.3.1网箱要求规格一般为(3.0,6.0)m×(3.0,6.0)m×(3.0,6.0)m，网目长15mm,30mm。3.3.2饲养管理使用的饲料一般有鲜活鱼、贝肉、沙蚕和配合饲料，饲料应符合NY5072的规定。春季培育亲鱼，水温14?以下，每1d,2d投喂一次，鲜活鱼日投饵率小于1%;水温14?以上，每天投喂一次，鲜活鱼日投饵率为2%,4%。秋季培育亲鱼，水温25?以下，每天投喂两次，鲜活鱼日投饵率为5%,8%。3.4室内水泥池培育主要用于春季加温培育亲鱼。3.4.1环境条件环境条件应符合下列要求:——水质:应符合NY5052的规定;——光照度:500lx,1000lx;——水温:15?,25?，以20?,22?为宜;——盐度:17,32，以23,30为宜。3.4.2培育池应设在安静的地方，保温性能好，每口培育池面积以40m2为宜，方形或圆形，平均水深1.5m以上。3.4.3饲养管理使用的饲料一般有鲜活鱼、贝肉、沙蚕和配合饲料。人工催产前40d左右移入室内水池。放养密度以1.5kg/m3为宜。鲜活鱼日投饵率为3%,5%，每天1次,2次，早上或傍晚投喂。日换水量50%左右。iscompletedintimeforsaiditemstakenfromthebalancebox,putweightsintheweightbox,turntheindexbacktozeroposition.Pulltheplug,checkthebalancepaniscleaninsidethebox,andthendustcovercovergoodbalance.13.thebalancefails,withoutrepair,shallimmediatelyreportthequalityassuranceDepartment.14.coverwellcover,fillouttherecord.Titrimetricanalysisofthesixthsectionoutlines(intermediate)andthetitrationwithastandardsolutionofknownconcentrationofaccuratedropsoftheburetisaddedtothesolutionofthesubstancetobemeasured,untilthesubstancebeingmeasuredresponsecompletely,andthenaccordingtotheconcentrationofthestandardsolutionandthevolumeofconsumption,calculatethecontentofmaterialbeingmeasured,thiskindofmethodcalledtitrationanalysismethodforquantitativeanalysis.1.standardsolution:solutionofaknownconcentrationofaccurate.Generalrequirementstofourdigitsafterthedecimalpoint,suchastheconcentrationofHClstandardsolution:0.1234mol/L.2.thestoichiometricpoint:standardsolutionandmeasuredsubstancedrippinghappentoreactionpoints.Stoichiometricpointisoftennotapparentinthereaction,inordertodeterminethestoichiometricpoint,generallyincludedinthesolutiontobemeasuredindicators,indicatorcolorchangestodeterminethestoichiometricpointreached.3.finish:indicatorcolorchanges.Endpointandthestoichiometricpointaretwodifferentconcepts,theoryofChemicalmeasuringpointisreservations,asstandardwithminimumnumberofsignificantdigitsbehindthedecimalpoint.Inadditionandsubtraction,becauseitisatransmissionofthenumericalerror,sotheabsoluteerroroftheresultmustbecomparablewiththemaximumabsoluteerrorinthe.Forexample:2.0375+0.0745+39.54=?39.54isdecimalHoubitnumberatleastof,inthisthreeadatainthe,itofabsoluteerrorsmaximum,for?0.01,soshouldto39.54forassociate,othertwoadigitalalsotoretaineddecimalHousecondbit,sothreenumbercalculationshouldfor:2.04+0.07+39.54=41.652.inmultiplicationandDivisionmethodoperationinthe,eachnumberandthetheyofproductorbusinessofeffectivedigitalofretained,toeachnumberintheeffectivedigitalbitnumberatleastofforstandard.Multiplicationmethod,therelativeerrorofthenumericvaluesarepassed,sotherelativeerroroftheresultsmustbecomparablewiththemaximumrelativeerrorinthe.Forexample:13.92x0.0112x1.9723=?0.0112isthreedigits,digitsatleast,itsrelativeerror,0.0112digitsshallprevail,namely:13.9x0.0112x1.97=0.3073.analysisofresultsnumberofdigitsafterthedecimalpointshouldbeconsistentwiththeprecisionoftheanalyticalmethodnumberofdigitsafterthedecimalpoint.4.theformulationoftestresultsshouldbeconsistentwiththecorrespondingproductstandard.Standardconceptsandprovisionsinafourthsection,testtemperature1.watertemperatureunlessotherwisespecified,referto98~100?;2.hotwatermeans70~80?;3.thelukewarmorwarmwateris40~50?;4.referto10~30?atroomtemperature;5.coldwateris2~10?;6.icebathreferstoabout0degreesCelsius;7.putcoldreferstocooltoroomtemperature.4人工育苗4.1环境条件环境条件应符合下列要求:——水质:应符合NY5052的规定;——水温:18?,26?;——盐度:23,30;——光照:要有充足的漫射光，避免直射光，光照强度为1000lx,4000lx。4.2育苗设施4.2.1育苗室应配有遮光幕和聚乙烯薄膜，使室内光线可调，且保温性能好。4.2.2产卵池方形或圆形;方形池的四角为弧形。每口池面积25m2,45m2，水深1.6m,1.8m。4.2.3育苗池每口池面积20m2,40m2，水深1.5m,1.6m，有独立进、排水口;池底向排水孔以一定的坡度倾斜，以利于排水。4.2.4饵料培养设备设施总面积约为育苗池总面积的60%，具体要求见 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 1。表1饵料培养设备设施设备设施容积或面积水深一级培养容器100mL、300mL、500mL、—(三角烧瓶或透明塑料袋)1000mL、3000mL22二级培养池(水泥池)2m,10m80cm,100cm22三级培养池(水泥池)20m,40m1.0m,1.2m22轮虫培养池(水泥池)5m,45m1.4m,1.5m卤虫孵化器33—0.5m,5m(玻璃钢或硬质塑料桶或圆形水泥池)4.2.5配套设施应具备供电系统、供水系统、供气系统、增温系统等。其中供水系统的水泵日提水能力应大于育苗用水高峰时用水量，沉淀池与蓄水池的总纳水量不少于日用水量。4.3鱼苗培育4.3.1催产亲鱼经麻醉后，从胸鳍基部或背鳍基部注射激素。激素种类及剂量视水温与亲鱼性腺成熟度而定，雄鱼的剂量为雌鱼的一半。4.3.2孵化静水孵化法，受精卵在水中的密度为3×104粒/m3,1×104粒/m3。4.3.3放养密度仔鱼期2.4×104尾/m3,0.8×104尾/m3，稚鱼期0.6×104尾/m3,0.3×104尾/m3，幼鱼期0.2×104尾/m3,0.1×104尾/m3。.3.4饵料系列4.3.4.1褶皱臂尾轮虫投喂前经6h以上20×106个/mL小球藻液强化培养，投喂方法见表2。表2褶皱臂尾轮虫投喂方法鱼苗日龄/d水中轮虫密度/(个/mL)3,53,55,1210,1512,2015,104.3.4.2卤虫无节幼体投喂时间为12日龄,16日龄，水中密度为0.5个/mL,1个/mL。4.3.4.3桡足类及其无节幼体应从无污染、无病原体的水域中采捕。从12日龄开始投喂，水体中保持密度在0.2个/mL,0.5个/mL。4.3.4.4鱼、虾、贝肉糜及配合饲料.肉糜日投喂量:20日龄,30日龄，50g/万尾,80g/万尾;30日龄,45日龄，100g/万尾,120g/万尾。35日龄以上可在肉糜中拌入适量粉状配合饲料。4.3.5日常管理应连续充气，使水中溶解氧保持在5mg/L以上。每天换水1次,2次，日换水量20%,120%，并在换水前用虹吸管吸去池底的残饵、死苗、粪渣及其他杂物。经常观察仔、稚鱼的摄食情况，监测理化因子变化情况，发现问题及时处理。4.4中间培育鱼苗在室内水泥池中培育至全长20mm以上时，可移到海区网箱中继续进行培育，直至全长30mm为止。4.5质量要求鱼苗大小规格整齐，全长30mm以上，无伤、无病、无畸形，游动活泼。5鱼种培育5.1环境条件5.1.1网箱区的选择应选在可避大风浪的海区，水深5m以上。潮流畅通，海区流速小于1.5m/s，，流向iscompletedintimeforsaiditemstakenfromthebalancebox,putweightsintheweightbox,turntheindexbacktozeroposition.Pulltheplug,checkthebalancepaniscleaninsidethebox,andthendustcovercovergoodbalance.13.thebalancefails,withoutrepair,shallimmediatelyreportthequalityassuranceDepartment.14.coverwellcover,fillouttherecord.Titrimetricanalysisofthesixthsectionoutlines(intermediate)andthetitrationwithastandardsolutionofknownconcentrationofaccuratedropsoftheburetisaddedtothesolutionofthesubstancetobemeasured,untilthesubstancebeingmeasuredresponsecompletely,andthenaccordingtotheconcentrationofthestandardsolutionandthevolumeofconsumption,calculatethecontentofmaterialbeingmeasured,thiskindofmethodcalledtitrationanalysismethodforquantitativeanalysis.1.standardsolution:solutionofaknownconcentrationofaccurate.Generalrequirementstofourdigitsafterthedecimalpoint,suchastheconcentrationofHClstandardsolution:0.1234mol/L.2.thestoichiometricpoint:standardsolutionandmeasuredsubstancedrippinghappentoreactionpoints.Stoichiometricpointisoftennotapparentinthereaction,inordertodeterminethestoichiometricpoint,generallyincludedinthesolutiontobemeasuredindicators,indicatorcolorchangestodeterminethestoichiometricpointreached.3.finish:indicatorcolorchanges.Endpointandthestoichiometricpointaretwodifferentconcepts,theoryofChemicalmeasuringpointisreservations,asstandardwithminimumnumberofsignificantdigitsbehindthedecimalpoint.Inadditionandsubtraction,becauseitisatransmissionofthenumericalerror,sotheabsoluteerroroftheresultmustbecomparablewiththemaximumabsoluteerrorinthe.Forexample:2.0375+0.0745+39.54=?39.54isdecimalHoubitnumberatleastof,inthisthreeadatainthe,itofabsoluteerrorsmaximum,for?0.01,soshouldto39.54forassociate,othertwoadigitalalsotoretaineddecimalHousecondbit,sothreenumbercalculationshouldfor:2.04+0.07+39.54=41.652.inmultiplicationandDivisionmethodoperationinthe,eachnumberandthetheyofproductorbusinessofeffectivedigitalofretained,toeachnumberintheeffectivedigitalbitnumberatleastofforstandard.Multiplicationmethod,therelativeerrorofthenumericvaluesarepassed,sotherelativeerroroftheresultsmustbecomparablewiththemaximumrelativeerrorinthe.Forexample:13.92x0.0112x1.9723=?0.0112isthreedigits,digitsatleast,itsrelativeerror,0.0112digitsshallprevail,namely:13.9x0.0112x1.97=0.3073.analysisofresultsnumberofdigitsafterthedecimalpointshouldbeconsistentwiththeprecisionoftheanalyticalmethodnumberofdigitsafterthedecimalpoint.4.theformulationoftestresultsshouldbeconsistentwiththecorrespondingproductstandard.Standardconceptsandprovisionsinafourthsection,testtemperature1.watertemperatureunlessotherwisespecified,referto98~100?;2.hotwatermeans70~80?;3.thelukewarmorwarmwateris40~50?;4.referto10~30?atroomtemperature;5.coldwateris2~10?;6.icebathreferstoabout0degreesCelsius;7.putcoldreferstocooltoroomtemperature.平直而稳定，经挡流等 措施 《全国民用建筑工程设计技术措施》规划•建筑•景观全国民用建筑工程设计技术措施》规划•建筑•景观软件质量保证措施下载工地伤害及预防措施下载关于贯彻落实的具体措施 后网箱内流速小于0.2m/s。5.1.2网箱区周围环境条件无直接的工业“三废”及农业、生活、医疗废弃物等污染源。5.1.3水环境因子水环境因子应符合下列要求:——水质:应符合NY5052的规定:——水温:8?,30?，早春鱼苗以14?以上放养为宜;盐度:13,32;——透明度:0.2m,3.0m，最适1.0m。5.2网箱区的设置与维护5.2.1网箱布局养殖大黄鱼的网箱为浮动式网箱。根据网箱大小以及潮流和风浪的不同情况，每100个左右网箱连成一个网箱片，由数十个网箱片分布的局部海区形成网箱区，每个网箱区的养殖面积不能超过可养殖海面的15%。各网箱片间应留50m以上宽的主港道，多个20m以上的次港道，各网箱片间的最小距离为10m以上，每个网箱区之间应间隔500m以上。每个网箱区连续养殖两年，应收上挡流装置及网箱，休养半年以上。5.2.2网箱区的环境卫生网箱上的生活污水、废弃物、残饵、垃圾，病死鱼等不得直接丢弃于海区，各网箱片应设收集容器予以分类收集，各网箱区应配备船只专人负责收集处理。5.3网箱的选择网箱规格一般为(3.0,6.0)m×(3.0,6.0)m×(2.5,3.0)m，网箱的网衣为无结节网片。放养全长25mm,30mm鱼苗，网目长为3mm,4mm;放养全长40mm,50mm鱼苗，网目长为4mm,5mm;放养全长50mm以上鱼苗，网目长为5mm,10mm。5.4运输视运输距离长短与鱼苗的规格大小，活水船运输密度为1.5×104尾/m3,6×104尾/m3;充氧塑料薄膜袋(0.4m×0.8m)包装运输宜在15?以下进行，每袋200尾,1000尾。5.5放养投放鱼苗选择在小潮汛期间，以低平潮流缓时刻为宜，低温季节选择在晴好天气且无风的午后，高温季节宜选择天气阴凉的早晚进行。全长25mm的鱼苗放养密度在1500尾/m3左右，随着鱼体的长大，密度逐渐降低。5.6饲料种类刚入网箱的鱼苗，可投喂适口的配合饲料、鱼贝肉糜、糖虾、大型冷冻桡足类等。养至25g以上的鱼种可直接投喂经切碎的鱼肉块。5.7投饵采用少量多次、缓慢投喂的方法，刚入网箱时每天投喂8次,10次，后可逐渐减少至2次，早晨和傍晚投喂。全长30mm以内的鱼苗，20?以上时，鱼贝肉糜日投饵率100%左右，随着鱼苗长大，逐渐降低投饵率。5.8日常管理5.8.1换洗网箱高温季节目长3mm的网箱隔3d,5d，目长4mm的网箱隔5d,8d，目长5mm的网箱隔8d,12d，应进行换洗。网目长10mm以上的视水温在15d,30d进行换洗。同时对苗种进行筛选分箱和鱼体消毒。5.8.2其他管理每天定时观测水温、盐度、透明度与水流等理化因子，以及苗种集群、摄食、病害与死亡情况，发现问题应及时采取措施并详细记录。5.9越冬管理5.9.1前期的管理对鱼种进行拼箱和分箱操作及强化饲养，做好网箱的安全防患与防病工作。5.9.2中期的管理水温10?,15?时，每1d,2d投喂一次，投饵率以1%为宜，傍晚投喂。同时做好日常管理，尽量避免移箱操作。当水温低于8?时应采取防护措施。5.9.3后期的管理每天投喂一次，投饵率应缓慢逐日增加，尽量避免移箱操作。5.10质量要求鱼种规格5g/尾以上，大小整齐，体形匀称，鳞片完整，无伤、无病、无畸形，游动活泼，正常移动无大量死亡。6食用鱼的饲料6.1网箱饲料6.1.1环境条件按5.1执行。6.1.2网箱区的设置与维护按5.2执行。6.1.3网箱的选择网箱规格一般为(3.0,6.0)m×(3.0,6.0)m×(3.0,6.0)m，网目长为10mm,30mm，网衣为有结节或无结节网片。另外，可选择深水大网箱。6.1.4运输活水船运输密度为600尾/m3,800尾/m3。6.1.5鱼种放养选择在小潮汛期间放养，放养前可用淡水等对鱼体进行消毒，50g/尾的鱼种放养密度以30尾/m3为宜。可少量混养鲷科鱼类、蓝子鱼等苗种。6.1.6饲料使用的饲料有配合饲料、鲜活鱼等，饲料应符合NY5072的规定。iscompletedintimeforsaiditemstakenfromthebalancebox,putweightsintheweightbox,turntheindexbacktozeroposition.Pulltheplug,checkthebalancepaniscleaninsidethebox,andthendustcovercovergoodbalance.13.thebalancefails,withoutrepair,shallimmediatelyreportthequalityassuranceDepartment.14.coverwellcover,fillouttherecord.Titrimetricanalysisofthesixthsectionoutlines(intermediate)andthetitrationwithastandardsolutionofknownconcentrationofaccuratedropsoftheburetisaddedtothesolutionofthesubstancetobemeasured,untilthesubstancebeingmeasuredresponsecompletely,andthenaccordingtotheconcentrationofthestandardsolutionandthevolumeofconsumption,calculatethecontentofmaterialbeingmeasured,thiskindofmethodcalledtitrationanalysismethodforquantitativeanalysis.1.standardsolution:solutionofaknownconcentrationofaccurate.Generalrequirementstofourdigitsafterthedecimalpoint,suchastheconcentrationofHClstandardsolution:0.1234mol/L.2.thestoichiometricpoint:standardsolutionandmeasuredsubstancedrippinghappentoreactionpoints.Stoichiometricpointisoftennotapparentinthereaction,inordertodeterminethestoichiometricpoint,generallyincludedinthesolutiontobemeasuredindicators,indicatorcolorchangestodeterminethestoichiometricpointreached.3.finish:indicatorcolorchanges.Endpointandthestoichiometricpointaretwodifferentconcepts,theoryofChemicalmeasuringpointisreservations,asstandardwithminimumnumberofsignificantdigitsbehindthedecimalpoint.Inadditionandsubtraction,becauseitisatransmissionofthenumericalerror,sotheabsoluteerroroftheresultmustbecomparablewiththemaximumabsoluteerrorinthe.Forexample:2.0375+0.0745+39.54=?39.54isdecimalHoubitnumberatleastof,inthisthreeadatainthe,itofabsoluteerrorsmaximum,for?0.01,soshouldto39.54forassociate,othertwoadigitalalsotoretaineddecimalHousecondbit,sothreenumbercalculationshouldfor:2.04+0.07+39.54=41.652.inmultiplicationandDivisionmethodoperationinthe,eachnumberandthetheyofproductorbusinessofeffectivedigitalofretained,toeachnumberintheeffectivedigitalbitnumberatleastofforstandard.Multiplicationmethod,therelativeerrorofthenumericvaluesarepassed,sotherelativeerroroftheresultsmustbecomparablewiththemaximumrelativeerrorinthe.Forexample:13.92x0.0112x1.9723=?0.0112isthreedigits,digitsatleast,itsrelativeerror,0.0112digitsshallprevail,namely:13.9x0.0112x1.97=0.3073.analysisofresultsnumberofdigitsafterthedecimalpointshouldbeconsistentwiththeprecisionoftheanalyticalmethodnumberofdigitsafterthedecimalpoint.4.theformulationoftestresultsshouldbeconsistentwiththecorrespondingproductstandard.Standardconceptsandprovisionsinafourthsection,testtemperature1.watertemperatureunlessotherwisespecified,referto98~100?;2.hotwatermeans70~80?;3.thelukewarmorwarmwateris40~50?;4.referto10~30?atroomtemperature;5.coldwateris2~10?;6.icebathreferstoabout0degreesCelsius;7.putcoldreferstocooltoroomtemperature.6.1.7投喂每天早上与傍晚各投喂一次，日投饵率在3%,6%;越冬期间投喂每天一次，阴雨天气可隔天一次，日投饵率小于1%。6.1.8日常管理根据水温和网目堵塞情况，及时换洗网箱，同时进行筛选分箱和鱼体消毒。每天定时观测水温、盐度、透明度与水流等理化因子，以及鱼的集群、摄食、病害与死亡情况，发现问题应及时采取措施并详细记录。6.2池塘饲养6.2.1池塘要求池塘大小以1.3ha较佳，平均水深2m以上，池底以一定的坡度向排水口方向倾斜，池底以沙、石质为佳。水质应符合NY5052的规定，池塘最好选择在有淡水源的地方，并且在每潮汛的15d内，有12d以上均可换水，或配备与池塘大小相适应的抽水设备。在池的浅滩及进出水闸门用密网围拦。在放养鱼种前进行严格清塘与消毒。6.2.2运输按6.1.4执行。6.2.3鱼种的放养应对鱼体进行消毒，放养密度根据水深与换水条件，每公顷放养100g/尾左右鱼种7500尾,12000尾。可适当混养鲷科鱼类、青蟹等苗种。6.2.4饲料与投喂按6.1.6和6.1.7执行。6.2.5日常管理每天换水1次,2次。每10d左右用生石灰全池泼洒(每升海水泼洒生石灰15mg,20mg)，以改善水质与底质。坚持每天早、中晚巡塘，观测水温、盐度、透明度、水位变化和鱼的活动情况等，发现问题及时采取措施，并详细记录。7鱼病防治7.1预防鱼苗、鱼种放入网箱或池塘养殖前，要严格进行消毒;并根据大黄鱼的生活习性与发病规律，做好日常的饲养管理工作，减少发病机率，贯彻以防为主的健康养殖。体表溃疡病和弧菌病可采用免疫预防方法。7.2治疗使用药物应符合NY5071的规定。大黄鱼常见鱼病治疗方法见表3。表3大黄鱼常见鱼病治疗方法鱼病名称症状治疗方法发病季节/月病鱼腹部膨胀，内有大量积水，轻按腹部，肛门有淡黄色粘液流出。有的病鱼皮肤出每千克饲料拌大蒜素1.0g,肠炎病5,11血，鳍基部出血;解剖病鱼，肠道发炎，2.0g，连续投喂3d,5d。肠壁发红变薄。每升海水泼洒五倍子(要先病鱼体表皮肤褪色，鳃盖出血，鳍腐烂，磨碎后用开水浸泡)2mg,4体表溃疡有的在体表出现疖疮或溃烂。解剖病鱼，4,11mg，连续泼洒3d;或每千克病幽门垂出血，肠道内充满土黄色的粘液，饲料拌三黄粉30g,50g，连直肠内为白色粘液，肝脏暗红色或淡黄色。续投喂3d,5d。感染初期，体色多呈斑块状褪色，食欲不每升海水泼洒五倍子(要先振，缓慢地浮于水面，有时回旋状游泳;磨碎后用开水浸泡)2mg,4弧菌病常年随着病情发展，鳞片脱落，吻端、鳍膜烂mg，连续泼洒3d;或每千克掉，眼内出血，肛门红肿扩张，常有黄色饲料拌三黄粉30g,50g，连粘液流出。续投喂3d,5d。本尼登虫寄生于鱼的体表皮肤，寄生数量多时病鱼呈不安状态，往往在水中异常地本尼登虫游泳或向网箱及其他物体上磨擦身体;体6,12淡水浸浴5min,10min。病表粘液增多，局部皮肤粗糙或变为白色或暗蓝色。严重者体表出现点状出血，溃疡，食欲减退或不摄食。寄生在大黄鱼的体表皮肤和鳃上，寄生处出现许多大小不一的白斑(白点)。病鱼淡水浸浴2min,4min;或瓣体虫病游泳无力，独自浮游于水面，鳃部严重贫4,8每升海水加硫酸铜10mg,血呈灰白色，并粘附许多污物，呼吸困难，12mg，浸浴10min。病死的鱼胸鳍向前方但伸直，鳃盖张开。淀粉卵涡鞭虫的营养体主要寄生在鱼类的鳃上，其次是体表皮肤和鳍，病情严重的淡水浸浴3min,5min;或3,6淀粉卵涡鱼肉眼看上去有许多小白点。病鱼游泳缓每升海水泼洒硫酸铜鞭虫病慢，无力地浮于水面，鳃盖开闭不规则，0.8mg,1.2mg，连续泼洒39,11口常不能闭合，有时喷水，呼吸困难，有d。时靠在固体物上、网衣上，磨擦身体。刺激隐核病鱼体表、鳃、眼角膜和口腔等与外界相4,8淡水浸浴3min,15min。虫病接触处，肉眼可观察到许多小白点，严重iscompletedintimeforsaiditemstakenfromthebalancebox,putweightsintheweightbox,turntheindexbacktozeroposition.Pulltheplug,checkthebalancepaniscleaninsidethebox,andthendustcovercovergoodbalance.13.thebalancefails,withoutrepair,shallimmediatelyreportthequalityassuranceDepartment.14.coverwellcover,fillouttherecord.Titrimetricanalysisofthesixthsectionoutlines(intermediate)andthetitrationwithastandardsolutionofknownconcentrationofaccuratedropsoftheburetisaddedtothesolutionofthesubstancetobemeasured,untilthesubstancebeingmeasuredresponsecompletely,andthenaccordingtotheconcentrationofthestandardsolutionandthevolumeofconsumption,calculatethecontentofmaterialbeingmeasured,thiskindofmethodcalledtitrationanalysismethodforquantitativeanalysis.1.standardsolution:solutionofaknownconcentrationofaccurate.Generalrequirementstofourdigitsafterthedecimalpoint,suchastheconcentrationofHClstandardsolution:0.1234mol/L.2.thestoichiometricpoint:standardsolutionandmeasuredsubstancedrippinghappentoreactionpoints.Stoichiometricpointisoftennotapparentinthereaction,inordertodeterminethestoichiometricpoint,generallyincludedinthesolutiontobemeasuredindicators,indicatorcolorchangestodeterminethestoichiometricpointreached.3.finish:indicatorcolorchanges.Endpointandthestoichiometricpointaretwodifferentconcepts,theoryofChemicalmeasuringpointisreservations,asstandardwithminimumnumberofsignificantdigitsbehindthedecimalpoint.Inadditionandsubtraction,becauseitisatransmissionofthenumericalerror,sotheabsoluteerroroftheresultmustbecomparablewiththemaximumabsoluteerrorinthe.Forexample:2.0375+0.0745+39.54=?39.54isdecimalHoubitnumberatleastof,inthisthreeadatainthe,itofabsoluteerrorsmaximum,for?0.01,soshouldto39.54forassociate,othertwoadigitalalsotoretaineddecimalHousecondbit,sothreenumbercalculationshouldfor:2.04+0.07+39.54=41.652.inmultiplicationandDivisionmethodoperationinthe,eachnumberandthetheyofproductorbusinessofeffectivedigitalofretained,toeachnumberintheeffectivedigitalbitnumberatleastofforstandard.Multiplicationmethod,therelativeerrorofthenumericvaluesarepassed,sotherelativeerroroftheresultsmustbecomparablewiththemaximumrelativeerrorinthe.Forexample:13.92x0.0112x1.9723=?0.0112isthreedigits,digitsatleast,itsrelativeerror,0.0112digitsshallprevail,namely:13.9x0.0112x1.97=0.3073.analysisofresultsnumberofdigitsafterthedecimalpointshouldbeconsistentwiththeprecisionoftheanalyticalmethodnumberofdigitsafterthedecimalpoint.4.theformulationoftestresultsshouldbeconsistentwiththecorrespondingproductstandard.Standardconceptsandprovisionsinafourthsection,testtemperature1.watertemperatureunlessotherwisespecified,referto98~100?;2.hotwatermeans70~80?;3.thelukewarmorwarmwateris40~50?;4.referto10~30?atroomtemperature;5.coldwateris2~10?;6.icebathreferstoabout0degreesCelsius;7.putcoldreferstocooltoroomtemperature.时病鱼体表皮肤有点状充血，鳃和体表粘液增多，形成一层白色混浊状薄膜。病鱼食欲不振或不摄食，身体瘦弱，游泳无力，呼吸困难，最终可能因窒息而死。8食用鱼起捕前的处理按NY5071规定的休药期，停止用药，起捕前停饵1d,2d。