共查询到20条相似文献，搜索用时 156 毫秒
1.
2.
以福建冬季海上筏式吊笼养殖的仿刺参为对象,采用传统海带饲料和市面销售的凝胶状海参配合饲料对三种规格的仿刺参幼参(平均体质量分别为105.57、73.15和52.89 g)进行了为期60 d的投喂试验,比较了两种饲料对仿刺参幼参生长的影响。结果表明,传统海带饲料投喂组大、中、小三种规格仿刺参的特定生长率分别为(0.69±0.04)、(0.87±0.05)和(0.99±0.02)%·d-1,凝胶状海参配合饲料投喂组的特定生长率分别为(0.65±0.03)、(0.86±0.05)和(0.81±0.10)%·d-1。传统海带饲料投喂组小规格仿刺参的平均个体增重率和特定生长率均显著大于凝胶状配合饲料投喂组(P0.05),而两种饲料投喂组大、中规格间的差异不显著。因此,传统海带饲料可用于仿刺参海上筏式吊笼养殖生产,而凝胶状海参配合饲料可作为传统海带饲料的辅助饲料。 相似文献
3.
不同水温对刺参幼参生长、呼吸及体组成的影响 总被引：15，自引：1，他引：15
设计不同温度梯度(10～25℃),对刺参(Apostichopusjaponicus)幼参的生长、耗氧率和体组成进行分析。结果表明,温度对刺参幼参生长有显著性影响,生长曲线呈"钟形",在水温10～15℃,特定生长率逐渐升高,在水温15～25℃,特定生长率逐渐降低。根据温度与特定生长率关系式计算得出,刺参最适生长温度为15 5℃。不同温度对刺参幼参耗氧率有显著性影响,在10～25℃,随着温度升高,刺参幼参耗氧率呈逐渐上升趋势。20～25℃的温度系数(Q10)高于10～15℃和15～20℃的Q10,表明高温时温度变化对刺参幼参影响较大。协方差分析表明,不同温度对刺参幼参体组成和能值有显著影响(P<0 05)。在10℃处理组,刺参体内粗蛋白、粗脂肪与能值均最高。随着温度的升高,粗脂肪含量和能值逐渐降低。 相似文献
4.
水温15.8～21.0℃下，将初始体质量(1.37±0.07) g的幼参于100 L的塑钢水箱中饲养75 d,每个水箱45头，投喂添加0%、0.20%、0.40%、0.60%和0.80%的蒙脱石饲料，测定幼参肠道蛋白酶和淀粉酶活性及体腔液的超氧化物歧化酶、溶菌酶和碱性磷酸酶的活性，探究蒙脱石对仿刺参生长、消化酶和免疫酶活性的影响。试验结果表明：蒙脱石对仿刺参存活率无明显影响，但显著提高了仿刺参特定生长率和饲料干物质的表观消化率(P<0.05);蒙脱石添加量为0.40%时，仿刺参特定生长率最高，显著高于对照组(P<0.05);添加0.20%～0.60%的蒙脱石显著提高了仿刺参肠道蛋白酶和淀粉酶活性(P<0.05),添加0.40%的蒙脱石组活性最高，分别为(73.27±3.73) U/mg和(70.63±1.96) U/mg;不同添加量的蒙脱石对仿刺参体腔液超氧化物歧化酶、溶菌酶和碱性磷酸酶活性均有不同程度的影响，对体腔液中溶菌酶活性的影响最大，0.60%组仿刺参溶菌酶活性最高，较对照组提高50%。在本试验条件下，饲料中添加约0.40%的蒙脱石，仿刺参可以获得最佳的消化性... 相似文献
5.
在饲料中添加包膜赖氨酸对仿刺参幼参生长、消化和体成分的影响 总被引：2，自引：0，他引：2
水温12.0～19.0 ℃,以玉米蛋白(8.2%)为蛋白源,在添加海泥、马尾藻、贝壳粉、复合矿物盐和维生素的基础饲料中添加0.0%(F0)、0.3%(F1)、0.7%(F2)、1.0%(F3)、1.4%(F4)、1.7%(F5)和2.1%(F6)的明胶包膜赖氨酸,以不同数量的贝壳粉平衡,饲喂平均体质量1.340 g的仿刺参.67 d的饲养表明,仿刺参摄食不同饲料时,成活率为96.25%～100.00%,差异不显著(P＞0.05),但特殊生长率随饲料中包膜赖氨酸添加量的增加而呈"低-高-低"的变化.仿刺参摄食添加0.7%(F2)、1.0%(F3)和1.4%(F4)包膜氨基酸的饲料时,特殊生长率和对饲料蛋白质的消化率显著(P＜0.05)和极显著(P＜0.01)高于摄食添加0.0%(F0)、0.3%(F1)、1.7%(F5)和2.1%(F6)的幼参.当基础饲料中添加0.78%的包膜赖氨酸时,仿刺参幼参生长最快.这种促生长作用与F3组(添加1.0%赖氨酸)仿刺参幼参消化道中蛋白酶活力极显著(P＜0.01)地高于其他各组有关.试验仿刺参体成分差异不显著(P＞0.05). 相似文献
6.
为探究仿刺参幼参对亮氨酸的最适需求量,在基础饲料中分别添加0.00%、0.80%、1.60%、2.40%、3.20%和4.00%的包膜亮氨酸,配成亮氨酸含量分别为1.29%(D1,对照组)、1.63%(D2)、1.98%(D3)、2.22%(D4)、2.58%(D5)和2.97%(D6)的6组实验饲料,饲喂初始体质量为(16.40±0.14) g的仿刺参幼参60 d。结果显示,(1)随饲料亮氨酸含量从1.29%提高到1.98%,仿刺参幼参的增重率和特定生长率显著升高,在D3组增重率达到最大值100.84%,随亮氨酸含量进一步提高,增重率和特定生长率显著降低,但D3、D4和D5组增重率和特定生长率还是显著高于对照组;(2)随饲料亮氨酸含量从1.29%提高到1.98%,仿刺参体壁的粗脂肪含量显著升高,在D3组达到最大值5.50%,且显著高于其他组,随亮氨酸含量进一步提高,仿刺参体壁粗脂肪含量显著降低,各组间水分、粗蛋白质和粗灰分含量均无显著性差异;随饲料亮氨酸含量的升高,仿刺参体壁蛋氨酸含量显著提高;(3)随饲料亮氨酸含量从1.29%提高到1.98%,仿刺参肠道脂肪酶和蛋白酶活性显著提高,... 相似文献
7.
我国南方海区地中海鳎鱼饲养技术要点 总被引：1，自引：0，他引：1
以鱼粉、陆生植物蛋白、扇贝边粉、海藻粉、谷朊粉等为主要原料,配制了粗蛋白水平分别为25.54%、28.79%、32.30%、35.49%、38.31%,粗脂肪均为3%左右的刺参专用配合饲料,分别对稚参、幼参、成参进行饲养试验.60 d的饲养结果显示:饲料中不同的粗蛋白水平对刺参的特定生长率(SGR)影响较为明显,而对成活率、脏壁比和营养组成影响不大;当饲料中蛋白含量分别为28.79%、32.30%、35.49%和38.31%时,稚参、幼参、成参的特定生长率最大;氨基酸分析显示,饲料中氨基酸的总量及组成与刺参的增长有一定的关系. 相似文献
8.
采用室内受控的实验方法研究了不同光照强度对刺参幼参生长的影响。实验设暗光、微强光、强光3个光照处理,同时每个光照处理组分别投喂两种饵料(人工配合饲料、人工配合饲料加底栖硅藻)。研究结果表明,不同光照强度下,幼参的生长差异显著(P<0.05),每种饵料处理下强光处理组幼参的特定生长率和日增重明显高于暗光处理组,而相同光照强度下两种饵料处理对幼参生长的影响差异不显著(P>0.05)。3个光照处理下幼参的特定生长率平均分别为0.26%、0.63%、0.98%/d,日增重为0.53、1.39、2.26 g/d。 相似文献
9.
研究了不同饲料原料对刺参Apostichopus japonicus(Selenka)幼参生长和体成分的影响.实验采用鱼粉、鼠尾藻Sargassum thunbergii Kuntze、浒苔Enteromorpha prolifera、海带Laminaria japonica和海泥5种主要原料配制的饲料投喂体长为4.18±0.23cm、体重为5.99±0.26g的刺参幼参,进行了为期80d的养殖实验.实验结束时,投喂鼠尾藻饲料、浒苔饲料和动物性饲料的刺参特定生长率(SGR)分别为95.36%/d、92.29%/d和84.87%/d.这三者之间无显著差异,但生长效果要好于投喂海带饲料和海泥饲料的刺参.实验结果表明,在特定的室内养殖条件下,虽然刺参能够更好地利用植物性蛋白,但是可以将动物性蛋白作为刺参的辅助性饲料成分,配制出营养更全面的配合饲料;浒苔作为刺参幼参的养殖饲料原料是完全可行的;海带粗加工产品不适于用做刺参饲料的主要成分. 相似文献
10.
在水温12.0～16.0 ℃下,将平均体质量8.56 g 的仿刺参幼参放养于容量50 L(50 cm× 40 cm ×30 cm)的水槽中,饲料以玉米蛋白为蛋白源,按饲料中粗蛋白含量12.0%、15.0%、18.0%、21.0%和24.0%,分别添加11.5%(F1)、16.1%(F2)、20.8%(F3)、25.7%(F4)和30.7 %(F5)玉米蛋白,以不同数量的海泥平衡.饲养60 d,各组幼参的存活率均为100%,但特殊生长率却随饲料中玉米蛋白含量的增加而下降.饲料中玉米蛋白含量由11.5%升至20.8%时,幼参的特殊生长率差异不显著(P＞0.05),当玉米蛋白含量达25.7%和30.7%时,幼参的特殊生长率显著低于F1、F2和F3组(P＜0.05).摄食不同试验饲料的幼参对饲料中蛋白质的消化率随饲料中玉米蛋白含量的增加而降低,消化道中蛋白酶和脂肪酶的活力差异不显著,而当饲料玉米蛋白含量超过20.8 %时,淀粉酶的活力明显下降.摄食试验饲料的幼参体内蛋白、脂肪、灰分和水分含量差异不显著(P＞0.05). 相似文献
11.
Shun Watanabe Jun Aoyama Seishi Hagihara Bunpei Ai Rhodora V. Azanza Katsumi Tsukamoto 《Fisheries Science》2013,79(3):375-383
Anguilla luzonensis and A. huangi were each described in 2009 using eels obtained from northern Luzon Island. We examined the taxonomic status of these two groups of eels using morphological and molecular genetic characters. There were no significant differences in two vertebrae counts between eels of A. luzonensis and A. huangi. Mitochondrial 16S ribosomal RNA and cytochrome b genes sequences were obtained and compared among 28 specimens of A. luzonensis, the holotypes of A. luzonensis and A. huangi, and one specimen of the other 15 anguillid species. The specimens of A. luzonensis exhibited almost identical sequences, including the holotype, with only a few site differences, and the genetic difference between the holotypes of A. luzonensis and A. huangi was within the range of differences of specimens of A. luzonensis. The other anguillid species were genetically very different from A. luzonensis and A. huangi, although A. interioris is a closely related species. It is clear that A. luzonensis and A. huangi are the same species, and according to the principle of priority in zoological nomenclature, A. luzonensis Watanabe, Aoyama, and Tsukamoto, 2009 is the valid species name, and A. huangi Teng, Lin, and Tzeng, 2009 is a junior synonym of A. luzonensis. 相似文献
12.
《Journal Of Aquatic Food Product Technology》2013,22(4):61-70
No abstract available for this article. 相似文献
13.
Mulloway (Argyrosomus japonicus) occur in estuarine and coastal waters surrounding Australia, Africa, India, Pakistan, China, Korea and Japan, where they are important in fisheries. This study identified that mulloway in south-eastern Australia had similar growth rates, but matured at smaller lengths and younger ages, to those in South Africa and Western Australia. Growth of both sexes was similar to about 5 years, after which females grew faster and attained a greater maximum length than males. Female mulloway matured at 4–5 years of age with a L50 of 68 cm, whereas males matured at 2–3 years of age with a L50 of 51 cm. The commercial fishery in New South Wales was characterised by declining catches and a reduction in the proportion of mulloway of mature lengths in landings. During 2002–2005 commercial landings were dominated (83%) by fish within 15 cm of the current minimum legal total length of 45 cm and aged 2 and 3 years (>80%), even though mulloway can attain lengths of 200 cm and live >30 years. Estimates of the rates of instantaneous total mortality ranged between 0.34 and 0.45, whilst the rate of instantaneous natural mortality (M) was estimated to be approximately 0.12. Yield-per-recruit analyses indicated that mulloway in New South Wales are being growth overfished and substantial increases in yield could be achieved by increasing the length at first harvest. Values of the spawning potential ratio were below 0.2 under a range of mortality estimates, suggesting that mulloway are at risk of recruitment overfishing. These results suggest that the spawning stock of mulloway in south-eastern Australia has been depleted and that remedial management action is required to protect this iconic species. 相似文献
14.
15.
Charles C. Mischke Matt J. Griffin Terrence E. Greenway David Wise 《Journal of the World Aquaculture Society》2013,44(2):288-292
Mosquitofish, Gambusia sp., have been spread throughout the world to biologically control mosquitoes. However, the fish has gained a reputation as an invasive species and has been implicated in displacing native aquatic species. Gambusia affinis are native to the southeastern United States and commonly occur in commercial channel catfish, Ictalurus punctatus, production ponds. We investigated effects of mosquitofish presence on zooplankton populations, water quality, disease occurrence, and fish production in experimental ponds. There were no differences between ponds with or without mosquitofish in numbers of calanoid copepods, cyclopoid copepods, total copepods, Bosmina sp., Ceriodaphnia sp., Moina sp., Daphnia sp., or total cladocerans. There were also no differences in copepod and cladoceran sizes. Copepod nauplii were more numerous during the summer months in ponds with mosquitofish. There were no differences in water quality variables (soluble reactive phosphorus, nitrate, nitrite, ammonia, total nitrogen, total phosphorus, pH) or phytoplankton density between ponds stocked with and without mosquitofish. Catfish production and disease occurrence were also similar between ponds with and without mosquitofish. Although mosquitofish may cause problems when stocked outside their native range, there does not appear to be any adverse effects of mosquitofish presence in catfish production ponds. 相似文献
16.
The effects of exposing the eggs of Pacific threadfin and amberjack eggs (AEs) to different concentrations of hydrogen peroxide for 5 min on hatch rate and survival were assessed in a series of experiments using a petri dish model rearing system. Despite significant inter‐batch variation in hatch rate, it was shown that eggs of both species could be safely exposed to up to 11 340 mg L−1 H2O2 for 5 min. Exposure to 34 230 mg L−1 H2O2 for 5 min was shown to be lethal to AEs at a late stage of development. In two further experiments, it was demonstrated that Pacific threadfin eggs were resistant to all tested concentrations of a range of polyvinylpyrrolidone iodine (PVP‐I) concentrations and contact times (up to 1000 mg L−1 PVP‐I for 10 min). The level of bacteria adhering to the eggs of both species was highly variable. Where eggs were heavily colonized (>104 cfu egg−1), hydrogen peroxide concentrations of at least 11 340 mg L−1, or PVP‐I concentrations higher than 500 mg L−1 for 10 min, were required for effective sterilization. In less colonized batches, rinsing in sterile seawater or exposure to lower (550 mg L−1) concentrations of H2O2 was sufficient to result in high apparent levels of surface sterility (<1 cfu egg−1). 相似文献
17.
18.
Fisheries Science - Fermentation of kamaboko in koji with wheat (KW), rice (KR), brown rice (KB), or soybean (KS) was performed by simulation of tofuyo processing. Moisture and protein content... 相似文献
19.
Sperm Motilities in Waigieu Seaperch,Psammoperca waigiensis: Effects of Various Dilutions,pH, Temperature,Osmolality, and Cations 
下载免费PDF全文
下载免费PDF全文 The objectives of this study were to evaluate the effects of varying dilutions, pH, temperature, osmolality, and cations on sperm motility parameters in waigieu seaperch, Psammoperca waigiensis. The maximum velocity of average in path (VAP), percentage of motile cells (MOT), and duration of sperm motility (DSM) were observed when semen was diluted in artificial seawater (ASW) at a ratio of 1:100 (144.9 ± 0.6 µm/sec, 95.6 ± 0.4%, and 230.3 ± 2.3 sec, respectively), at 30 C (142.0 ± 0.6 µm/sec, 93.6 ± 0.4%, and 238.3 ± 0.9 sec, respectively), and pH 8 (144.8 ± 0.6 µm/sec, 93.3 ± 0.4%, and 234.0 ± 1.5 sec, respectively). Maximum VAP, MOT, and DSM were obtained in each solution containing 0.6 M NaCl (143.8 ± 1.0 µm/sec, 91.3 ± 2.0%, and 230.6 ± 4.2 sec, respectively), 0.6 M KCl (135.1 ± 3.1 µm/sec, 91.1 ± 3.1%, and 230.3 ± 3.7sec, respectively), 0.2M CaCl2 (105.3 ± 4.7μm/sec, 47.9 ± 2.7%, and 120.7 ± 1.3 sec, respectively), 0.2 M MgCl2 (107.3 ± 3.0 m/s, 42.1 ± 3.3%, and 120.3 ± 4.8 sec, respectively), and osmolality of 400 mOsm/kg (145.1 ± 2.5 µm/sec, 93.0 ± 2.1%, and 346.5 ± 4.4s, respectively). We used these mediums as artificial insemination media for fertilizing matured eggs. The results showed that the fertilization and hatching rates in 0.6 M NaCl (75.3 ± 0.6% and 57.0 ± 2.4%, respectively), ASW (70.8 ± 1.2% and 51.2 ± 1.8%, respectively), or 400 mOsm/kg (72.9 ± 1.8% and 55.3 ± 1.6%, respectively) were higher than that in seawater (63.9 ± 1.2% and 39.2 ± 3.9%, respectively). In conclusion, using 0.6 M NaCl, ASW, or 400 mOsm/kg as an artificial insemination medium is effective for fertilizing of waigieu seaperch. 相似文献
20.
对驼背鲈(Chromileptes altivelis)的胚胎发育及仔、稚、幼鱼的形态特征进行了详细的观察与研究,描述了从受精卵到仔、稚、幼鱼各发育期的时间和形态特征变化。结果表明,在水温25-26℃、盐度30的海水中,受精卵历时27 h 25 min完成整个胚胎发育过程,经历从卵裂、囊胚、原肠、神经胚到肌节形成、各器官的逐渐形成、变化、完善等一系列的胚胎发育和变化过程;根据其卵黄囊消长情况、鳞片的覆盖状态、体色发生的不同变化以及第二背鳍和腹鳍的消长,将胚后发育分为仔、稚、幼鱼3个阶段。在水温22-26℃、盐度29-31、DO≥5 mg/L的条件下,2-3 d仔鱼卵黄囊消失,开口摄食;生长发育至31 d,仔鱼已变态进入稚鱼期;培育至57 d,稚鱼完成变态,成为幼鱼。第二背鳍棘和腹鳍棘的生长与收缩等石斑鱼类早期发育的共性生长特征及其体表特性体色变化特征为驼背鲈胚后发育过程中最明显的特征。 相似文献