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1.
不同方式加工海带投喂盘鲍幼鲍生长速度比较 总被引：5，自引：0，他引：5
将初始壳长1.890.20cm的盘鲍幼鲍随机分配到3个试验组,每组50只,每个试验组各设4个平行组。第1组:投喂盐渍海带;第2组:投喂煮沸海带;第3组(对照组):投喂晒干海带。试验用鲍在同一口水泥池中饲养50d,投喂足量饵料。投喂盐渍海带盘鲍幼鲍的日均壳长增长(P<0.001)及平体重增长率(P<0.05)均明显高于对照组,但投喂煮沸海带盘鲍幼鲍的日均壳长增(P>0.05)及平均体重增长率(P>0.05)与对照组无明显差异。 相似文献
2.
该研究目的是建立一套鲍育苗和养殖的生态化模式,包括鲍苗种生态培育模式、鲍陆基生态养成模式和海上鲍藻套养生态养成模式,以克服目前鲍养殖业存在的病害频发、成活率低下等问题,提高鲍养殖的经济效益,降低养殖风险。鲍苗种生态培育模式通过＂光照-微藻-微生态制剂-滤食性动物-鲍苗＂构建复合生物体系;鲍陆基生态养成模式通过池内建立＂复合生物区系＂,并在池外设立生态塘和生态渠进行养殖废水处理的方式构建;海上生态养成模式通过＂鲍藻套养＂构建。共培育鲍苗5批次,培育周期210～240d,共产出鲍苗17.764×104个,平均壳长1.5cm以上,育成率0.78%～1.23%。陆基生态化模式养成商品鲍43.774×104个,平均壳长6.53cm,平均体质量34.6g,成活率87.5%,周期18～20个月。海上鲍生态养成150口网箱,养成商品鲍3×108个,平均壳长6.50cm以上,成活率85%以上,养成时间18～20个月。 相似文献
3.
在水温15.8～24.7℃下,将小规格(壳长为1.03±0.02 cm)和中规格(壳长为1.57±0.03 cm)绿盘鲍(GS-02-003-2018)(皱纹盘鲍Haliotis discus hannai Ino♀×绿鲍H.fulgens♂)稚鲍分成A、B、C和D 4个组,饲养在240 mm×170 mm×285 m... 相似文献
4.
1987～1990年在长海县獐子岛近海水域,采用人工培育的平均壳长为20mm(12～34mm)的幼鲍进行底播,3周年后,平均壳长达77.5mm,平均体重达64.7g,成活率为46.9%。试验证明,底播幼鲍的规格与其成活率密切相关,适宜规格为壳长20～25mm,最小规格为18mm。讨论了回捕率的调查方法,以及幼鲍底播规格与中间育成在时间上的衔接等问题。 相似文献
5.
为优化海上养鲍设施,特别是养鲍网箱结构,开展了40 d的皱纹盘鲍杂交鲍幼鲍(Haliotis discus hannai♀×Haliotis discus discus♂)在0 Lx(暗光照)、0~500 Lx(弱光照)、0~6 500 Lx(强光照)3组不同光照强度下的生长与活动试验。结果显示,壳长(4.86±0.17)cm、体重(15.08±1.07)g的幼鲍,壳长平均日增长和体重平均日增长分别为(0.014 1±0.003)cm/d和(0.054 9±0.011)g/d(暗光组)、(0.008 3±0.003)cm/d和(0.046±0.013)g/d(弱光组)、(0.007±0.001)cm/d和(0.028 4±0.016)g/d(强光组),二者均与光照强度呈反比,且光照对鲍壳生长的影响大于对质量的影响。暗光照环境下,幼鲍活动时间提前30 min,活动时间增加0.5~1 h,且进食量大、进食速度快。研究表明,强光照会对鲍形成光压抑的生活环境,影响鲍的正常行为与生长。海上养鲍应根据鲍对光照刺激的反应,选择适宜的水层,并优化网箱和匍匐基结构。 相似文献
6.
采用皱纹盘鲍大连群体与盘鲍日本群体进行杂交育苗试验和鲍苗种生产。结果表明,皱纹盘鲍和盘鲍正、反交组合的受精率和孵化率均低于两亲本自交组,而其苗种成活率高于两亲本自交组（提高达20％以上）;皱纹盘鲍和盘鲍的正、反交组合鲍苗的生长情况是,其平均壳长明显高于两亲本自交组鲍苗的平均壳长,最长达2．01 cm ;皱纹盘鲍与盘鲍作为亲本进行鲍苗种生产,经160 d培育,共培育出鲍苗种2020．75万只（平均壳长2．01 cm ）,鲍出苗量平均4345．7只／m2。通过鲍种内杂交的育种方法,可以达到改良和优化鲍种质的目的。 相似文献
7.
皱纹盘鲍幼鲍配合饵料的研制与喂养的初步研究 总被引：1，自引：0，他引：1
1984年春季用配制的7种饵料,在室内以两个不同条件下,对两种大小规格的幼鲍(壳长7.0～10.0与13.0～16.0毫米)进行了49天与70天的两批喂养试验,并用日本商品饵料与海带作生长对比。所有7种配合饵料对幼鲍的生长效果都远超过了自然饵料——海带,其中有3种较为突出,平均日增长多在100微米以上,而与日本商品饵料效果接近。若以海带的饵料当量值为1.00,对于大个体组的幼鲍,0301的当量为1.78,0302为1.73,0306为1.62,日本饵则为1.68;而小个体组效果低于日本饵。通过保形率试验,在20～24.7℃下连续充气,24小时后0301、0306与8540的保形率分别可达70.4%、71.7%与76.3%;48小时后仍各保持65.8%、64.0%与71.3%。虽经48小时浸泡与气泡冲击仍无碎散现象,其保形率接近日本饵。配合饵料还成功地通过了海上试验,在1985年夏季海上喂养结果,配合饵料同样显示比海带优越。配饵8540在第一阶段(25天)平均日增长高达176、168微米;全阶段(54天)平均日增长8540为154微米,是海带的2.39倍。这一结果不仅加快了鲍生长、缩短了养殖周期,而且弥补了夏秋季缺少海藻饵料的不足。 相似文献
8.
报道了山东南部皱纹盘鲍（HaliotisdiscushannaiIno）工厂化养殖试验研究的结果。自1995年1月19日至1996年5月19日，经16个月的培育，将平均壳长21．4mm，平均体重0．99g的幼的培育成平均壳长61．9mm（最大壳长72．0mm），平均体重28.5g的成鲍，成活率为93．2％。0．3m2的波纹权的养殖密度：鲍壳长为20．0～30．0mm时，养殖密度200～250粒为好；40．0mm以前，养殖密度150粒为宜；60．0mm以前，养殖密度50～80粒为佳。饵料以人工配合饵料为好。在鲍壳长40．0mm以前，在投喂人工配合饵料的同时，加上适量的新鲜海藻可以达到同样的增长和增重的目的。全投喂海藻增长和增重都较慢。 相似文献
9.
日本大鲍与皱纹盘鲍杂交的研究 总被引：4，自引：0，他引：4
利用从日本引进的大鲍，与我国产皱纹盘鲍进行了杂交育苗试验，在540m^2鲍育苗池中，1999年6月常温采苗至当年11月份，培育出平均壳长17.9mm的皱纹盘鲍雌与日本大鲍雄的杂交鲍苗180余万粒，单位面积出苗量为3300余粒／m^2。这些杂交鲍苗，经过1年多的室内饲育，至2000年11月平均个体壳长达37mm，最大个体壳长达45mm，显示出了良好的生产性状和一定的杂种优势。 相似文献
10.
虾池内混养魁蚶度夏 越冬初探 总被引：1，自引：0，他引：1
选用14亩虾池,水深1.5m,泥底,投放平均壳长3.8cm的1龄魁蚶苗500kg(每亩2143枚)和平均体长3.0cm的中国对虾苗28万尾(每亩2万尾)。经1990至1991两年试验观察,证明魁蚶能在虾池内顺利度夏和越冬,其成活率分别为74.0%和94.5%,当年(越冬前)魁蚶平均壳长达到4.9cm,平均体重33.0g,至翌年10月收获,平均壳长为6.4cm,平均体重49.2g,快于自然海区筏式养殖。 相似文献
11.
The study investigated the growth performance of abalone from juvenile to marketable size in a commercial-scale recirculating
aquaculture system. The rearing system consisted of 12 raceways (4.0 × 0.8 × 0.6 m) with a protein skimmer and a submerged
biofilter for juveniles and 10 raceways (6.6 × 1.3 × 0.6 m) with a protein skimmer and a trickling biofilter for on-growing.
Sea mustard (Undaria pinnatifida) and kelp (Laminaria japonica) were fed to the abalone. The total weight of abalone in the recirculating aquaculture system at the juvenile stage increased
from 22.0 kg (average shell length 24.5 mm) to 75.5 kg (average shell length 42.5 mm) after 180 days. Feed conversion ratios
increased slightly from 13.7 for the first 90 days to 16.3 thereafter. The shell growth rate of juvenile abalone between 24.5 mm
and 34.8 mm was 3.4 mm month−1, while for juveniles between 34.8 mm and 42.5 mm it was 2.6 mm month−1. The total weight of abalone in the recirculating aquaculture system for the on-growing stage increased from 100.0 kg (average
shell length 44.0 mm) to 433.3 kg (average shell length 72.7 mm) after 570 days. The feed conversion ratios for the first
173 days, the next 320 days, and the last 570 days were 19.6, 22.1, and 24.8, respectively. The growth rate of the average
shell length during the on-growing period was 1.5 mm month−1. Total ammonia nitrogen (TAN) concentrations were stabilized below 0.12 mg l−1 in the juvenile recirculating system and 0.14 mg l−1 in the on-growing recirculating system after conditioning of the biofilters. 相似文献
12.
Wenresti G Gallardo Myrna N Bautista-Teruel Armando C Fermin & Clarissa L Marte 《Aquaculture Research》2003,34(10):839-842
A method of marking abalone (Haliotis asinina Linne) for sea ranching and stock enhancement purposes was developed. Three‐month‐old abalone juveniles (11.8‐mm shell length, 0.28 g) were fed artificial diets for 1, 2, or 3 weeks. The width of the bluish‐green shell band produced by abalone juveniles was 1.7, 2.6, and 4.2 mm after 1, 2, or 3 weeks of feeding respectively. The growth and survival of juveniles fed artificial diets did not differ from that of juveniles fed the seaweed Gracilariopsis bailinae (control). Feeding the diet‐fed juveniles with the seaweed thereafter produced the natural brownish shell, thus forming a sandwiched bluish‐green band. An experimental release in outdoor tanks with natural growth of seaweeds and diatoms, and in a marine reserve showed that the shell band remained clear and distinct, indicating the usefulness of this shell marking method in sea ranching and stock enhancement of abalone. 相似文献
13.
Fernando Díaz Ana Denisse Re Zarina Medina Gerardo Re Gustavo Valdez & Francisco Valenzuela 《Aquaculture Research》2006,37(9):877-884
The thermoregulatory behaviour of green abalone Haliotis fulgens and pink abalone H. corrugata was investigated. Haliotis fulgens juveniles ranging in wet weight from 3.0 to 3.3 g and from 28.7 to 30.5 mm shell length and of H. corrugata 2.0 g and 25.7 mm in shell length were exposed to 19°C for 30 days in a flow‐through water system. Temperature preference was determined in a horizontal thermal gradient and was found to be 25.4°C for green abalone and 25.0°C for pink abalone. Displacement velocity was 4.3 cm h−1 for H. fulgens and 12.8 cm h−1 for H. corrugata. The optimum temperature for growth calculated for both abalone species was 24.6 and 24.5°C respectively. The critical thermal maxima (CTMax) of H. fulgens and H. corrugata were determined as a measure of thermal tolerance. Abalones were subjected to increasing water temperatures at a rate of 1°C on 30 min until they detached from the substrate. The CTMax at 50% were 33.6 and 32.0°C for green and pink abalone respectively. The results are discussed in relation to site selection and commercial rearing. 相似文献
14.
Pacific abalone (Haliotis discus hannai Ino) aquaculture is a thriving industry in China. This study describes a novel submerged cage culture system for abalone rearing in Fujian, South China. The cage consisted of five vertical slots that were oriented perpendicular to the flow of water. The slots were separated by six vertically connected plastic plates for abalone attachment and shelter at the bottom of the cage. Experiment 1 was designed to determine the appropriate stocking density at the start of the abalone sea‐based production cycle. Eight‐month‐old hatchery reared and size‐graded juveniles were transferred to the sea‐based culture system. For different stocking densities, shell length of juveniles obtained in this novel culture system on 2, 3.5 and 5 months, respectively, was compared with shell lengths obtained in a traditionally multi‐tier basket culture system. In Experiment 2, daily growth rates (DGRs) in shell length and biomass in terms of wet weight of 2‐year‐old abalones reared in cage and tiered basket culture systems were compared over a 6‐month period. Results of Experiment 1 showed that growth of abalone in the cage culture system is density‐dependent; the mean final shell length of juveniles obtained was 6.7–15.9% higher than in tiered baskets system even at the same initial stocking density. In Experiment 2, DGRs in shell length of 53.83–78.38 μm day?1 obtained in cage system were significantly higher than that in tiered baskets (P < 0.01). And in terms of wet weight biomass, it was 1.48–3.01 times higher in the cage system compared with the traditional system. Abalone survival was more than 87.5% in both culture systems in both experiments. Advantages of the newly established cage culture system included better growth performance of the animals reared and potential improvement of rearing conditions, such as improved water flow velocity and dissolved oxygen. 相似文献
15.
研究虾夷马粪海胆幼胆对鲜海带、盐渍海带、干海带、白菜和萝卜的饵料选择性。利用五种物料饲喂虾夷马粪海胆幼胆50天,检测海胆的成活率、生长情况。结果发现,摄食鲜海带和干海带组成活率最高,分别达到(99.83±0.29%)和(93.50±2.60%);摄食干海带和盐渍海带组的增重率最高,分别达到(120.36±3.13%)和(117.34土5.74%);摄食鲜海带和盐渍海带组的壳径扩增率最大,分别达到(4.74±0.45%)和(4.30±0.40%)。虾夷马粪海胆幼体摄食干海带时,饵料系数最低,为1.62±0.53。研究表明,鲜海带、干海带和盐渍海带都是虾夷马粪海胆的优选饵料。 相似文献
16.
干露及淡水浸泡对菲律宾蛤仔稚贝生长和存活的影响 总被引：4，自引：0，他引：4
于2004年3—5月研究了干露及淡水浸泡对菲律宾蛤仔稚贝生长及存活的影响。试验结果表明,(1)同种规格稚贝耐干露和淡水浸泡能力随着温度升高而下降;相同温度下,不同规格稚贝耐干露能力随规格的增加而增大,耐淡水浸泡能力在稚贝壳长9.5mm时,随规格增大而增大,当稚贝规格9.5mm时,耐淡水浸泡能力随规格的增大而减小。(2)经干露和淡水浸泡的稚贝在开始7d内生长缓慢,生长速度远不及未经处理的稚贝,7d后各种规格的稚贝生长明显加快,达到、甚至超过未经处理稚贝的生长速度,存在补偿生长现象。 相似文献
17.
2003～2004年6-7月投放2．5～3．0cm的栉孔扇贝苗种，养殖约5个月，12月份收获时平均壳高6．0cm以上，成活率90％，出柱率14％。2003年养殖10台筏，当年投资当年见利。2004年新增加了90台筏，当年基本收回投资。 相似文献
18.
Toshihiro Onitsuka Tomohiko Kawamura Shunsuke Iwanaga Satoshi Ohashi Toyomitsu Horii 《Fisheries Science》2010,76(4):619-623
The dietary value of juvenile stages (gametophyte and juvenile sporophyte) of the brown macroalga Eisenia bicyclis for post-larval and juvenile abalone Haliotis diversicolor of 2.0–6.5 mm in shell length (SL) was examined and compared with that of a benthic diatom, Nitzschia sp., in laboratory experiments. Most abalone actively fed on these diets, but there were large variations in the growth rate
among the diets and among the growth stages of abalone. Growth rates of abalone fed on Nitzschia sp. were highly variable within each growth stage, but showed no clear differences among growth stages. In contrast, in abalone
fed gametophytes or juvenile sporophytes, growth rates linearly increased as abalone grew. Growth rates of >60 μm SL/day were
observed in juveniles of >3 mm SL fed gametophytes, and juveniles of >5 mm SL fed juvenile sporophytes. These results indicate
that the dietary value of the juvenile stages of E. bicyclis for the abalone changes as they grow, and with growth juvenile abalone begin to efficiently utilize gametophytes and juvenile
sporophytes in that order. 相似文献