共查询到19条相似文献，搜索用时 125 毫秒
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泥鳅属鲤形目、鳅科、泥鳅属,其种类较多,仅我国就有100多种和亚种,常见的主要有真泥鳅、大鳞泥鳅、内蒙古泥鳅(埃氏泥鳅)等.锦江河土著泥鳅是铜仁自然水体中小型经济鱼类之一,属真泥鳅种,其肉质细嫩、味道鲜美、营养丰富、具有较高药用价值,市场需求年年攀升.养殖形势日益看好与自然资源日益匮乏的矛盾,导致探索泥鳅人工繁育和养殖技术在各地纷纷兴起.然而,泥鳅繁殖和种苗生产供应始终是制约其发展的瓶颈,为此,从2011年春起我们在铜仁市碧江区漾头镇鹏扬农业综合开发有限公司泥鳅繁育基地对锦江河土著泥鳅开展了人工繁殖技术试验和研究,取得了较好的成效. 相似文献
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泥鳅是一种小型特种经济鱼类.头小,背部一根脊椎骨,刺少,食用口感好.在泥鳅繁殖生产中,注重亲本的选择,尤其应注意区分泥鳅和大鳞副泥鳅,原因在于虽然泥鳅与大鳞副泥鳅可杂交,但在规模繁殖中存在很高的不确定性.本文将主要探讨泥鳅与大鳞副泥鳅在实际生产过程中的区分方法及营养差异. 相似文献
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泥鳅属鲤形目,鳅科,泥鳅属,是我国分布较广的淡水经济鱼类,广泛分布于稻田、浅水池塘、沟渠中.泥鳅肉质细嫩,味道鲜美,并有较高的药用价值,深受广大消费者的喜爱.由于泥鳅个体小,体表的黏液多,手抓容易滑走,大规模注射催产药物操作困难,所以,研究一种对泥鳅伤害小,操作简便的方法很有必要.笔者采用将泥鳅装入三角袋进行注射操作的方法,繁殖泥鳅的效果好.具体的操作要做好以下几点. 相似文献
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泥鳅和大鳞副泥鳅年龄与生长的比较研究 总被引：7，自引：0，他引：7
对武汉地区的泥鳅与大鳞副泥鳅进行了常规的生物学测定.泥鳅和大鳞副泥鳅的体长与鳞径均呈直线相关,L泥鳅=23.995+96.095R, r=0.904;L副泥鳅=9.919+69.053R, r=0.990.2种鳅体长与体重均呈幂函数的增长关系,W泥鳅=2.360×10-6L3.253,r=0.998;W副泥鳅=4.629×10-6L3.126,r=0.997.泥鳅的生长特性与大鳞副泥鳅基本一致,相同年龄中,泥鳅体长增加略大于大鳞副泥鳅.应用Von Bertalanffy生长方程拟合该两种鱼的一般生长规律,计算得出的生长参数,泥鳅为L∞=286.5 mm,k=0.159 9,t0=-0.996 8 a;大鳞副泥鳅为L∞=294.4 mm,k=0.133 0,t0=-1.211 5 a. 相似文献
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利用常规肌肉营养分析方法测定了四倍体泥鳅、二倍体泥鳅和大鳞副泥鳅的肌肉营养成分.结果表明:四倍体泥鳅、二倍体泥鳅和大鳞副泥鳅肌肉中蛋白质含量(鲜重)分别为18.68%、18.69%和18.20%;脂肪含量分别为0.796%、0.106%和1.203%;水分含量分别为79.81%、79.52%和78.40%;灰分含量分别为0.951%、1.188%和1.162%.3种泥鳅肌肉中都含有常见的17种氨基酸,其中包括9种人体必需氨基酸.氨基酸总量(占鲜重)分别为17.57%、18.11%和17.47%;必需氨基酸总量分别为7.84%、7.98%和7.76%,必需氨基酸的构成比例符合FAO/WHO的标准.鲜味氨基酸含量分别为6.98%、7.33%和6.95%.经比较分析,四倍体泥鳅和二倍体泥鳅肌肉中蛋白质含量、17种氨基酸含量、氨基酸总量和必需氨基酸总量均很接近,但都明显高于大鳞副泥鳅. 相似文献
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四倍体和二倍体泥鳅及大鳞副泥鳅营养成分分析 总被引：2，自引：0，他引：2
利用常规肌肉营养分析方法测定了四倍体泥鳅、二倍体泥鳅和大鳞副泥鳅的肌肉营养成分。结果表明: 四倍体泥鳅、二倍体泥鳅和大鳞副泥鳅肌肉中蛋白质含量(鲜重) 分别为18. 68%、18. 69%和18. 20%; 脂肪含量分别为0. 796%、0. 106%和1. 203%; 水分含量分别为79. 81%、79. 52%和78. 40%; 灰分含量分别为0. 951%、11188%和1. 162%。3种泥鳅肌肉中都含有常见的17种氨基酸, 其中包括9种人体必需氨基酸。氨基酸总量(占鲜重)分别为17. 57%、18. 11%和17. 47%; 必需氨基酸总量分别为7. 84%、7. 98% 和7. 76%, 必需氨基酸的构成比例符合FAO /WHO 的标准。鲜味氨基酸含量分别为6. 98%、7. 33%和6. 95%。经比较分析, 四倍体泥鳅和二倍体泥鳅肌肉中蛋白质含量、17种氨基酸含量、氨基酸总量和必需氨基酸总量均很接近, 但都明显高于大鳞副泥鳅。 相似文献
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泥鳅的池塘无公害高产养殖技术 总被引：1，自引：0，他引：1
泥鳅又名鳅鱼,鳗鱼鳅,鳛鱼等,在鱼类分类学上属鲤形目,鳅科.泥鳅具有较好的食疗作用和较高药用价值,在我国民间有"天上斑鸠,地上泥鳅"之佳誉,也素有"水中人参"之美称,深受广大消费者的青睐.汉沽区水产技术推广站,自从2000年开始进行泥鳅的池塘高产养殖实验,经过几年的摸索,养殖技术日趋成熟,养殖面积已经从最初的20亩发展到500亩,平均亩产可达3 000 kg,亩效益达到2万元,创造了良好的经济和社会效益.当前,满足国内和国际市场的需求,发展无公害泥鳅养殖,提供更多优质的泥鳅水产品,是当今泥鳅人工养殖业的发展方向,现将泥鳅无公害养殖技术介绍如下. 相似文献
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Jian Gao Shunsuke Koshio Binh Thanh Nguyen Weimin Wang Xiaojuan Cao 《Fisheries Science》2012,78(6):1331-1336
The aim of this study was to determine the differences in the nutritional properties of wild and cultured loach Misgurnus anguillicaudatus obtained from southern Japan. Major parameters, such as whole-body proximate composition, lipid classes, and fatty acid and amino acid composition, were investigated. The whole-body total lipid content of cultured loach was twofold higher than that of wild loach and the proportion of neutral lipids was significantly higher in cultured loach than in wild loach. However, the polar lipid content was two- to threefold lower in cultured loach than in wild loach. Compared to the wild loach, higher contents of 20:5n-3 and 22:6n-3 were detected in cultured loach, but much lower contents of 20:4n-6. In terms of whole-body amino acid composition, wild and cultured loach showed similar profiles. In conclusion, the consumption of cultured loach will contribute to dietary n-3 highly unsaturated fatty acids intake, with a benefit to human health. 相似文献
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This study was carried out to compare growth, intestinal enzymes activity, antioxidation and nonspecific immunity of loach between farmed and imitative ecological farming loach, Misgurnus anguillicaudatus. Loach from farmed (average body weight 15.03 ± 0.36 g) and imitative ecological farming (average body weight 12.44 ± 0.62 g) population were used to analyse growth, whole-body composition, intestinal enzymes, antioxidant enzymes activity and resistance to bacteria. The results showed specific growth rate, average daily gain and protease, lipase, amylase and γ-GT activities in intestine and hepatopancreas of farmed loach were significantly higher (p < 0.05) than of imitative ecological farming loach. However, total protein, lysozyme and albumin contents and superoxide dismutase, catalase and glutathione peroxidase activities of imitative ecological farming loach were significantly higher (p < 0.05) than of farmed loach. Moreover, resistance to Aeromonas hydrophila of imitative ecological farming loach was higher than of farmed loach (p < 0.05). Taken together, ecological farming loach possesses higher antioxidant capacity and resistance to bacteria than farmed loach. 相似文献
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Abstract— The microhabitat selection of stone loach ( Barbatula barbatula ) in relation to instream cover and predation risk was investigated in artificial streams. In one experiment, stone loach were presented different combinations of shelter structures, two at a time, that provided visual isolation, flow refuge, both, or none. In all cases, visual isolation shelters were selected by the fish, with little use of clear shelters and no apparent selection of flow refuges. In a second experiment, diel activity patterns and habitat selection of stone loach were measured when visual isolation structures were placed in the riffle only, pool only, both riffle and pool or in no habitat. Stone loach were marked with passive integrated transponder tags and a sensor plate was placed between the riffle and pool habitats to measure diel activity patterns. Habitat use was measured by releasing drop gates between the two habitats at the end of each trial. More stone loach used the pool than the riffle in all treatments, but use of the riffle increased when cover was present only there. Furthermore, stone loach were most active between 2100 and 0300. To determine the effect of predation threat on habitat use by stone loach, one adult brown trout ( Salmo trutta ) was added to each pool. The presence of trout caused stone loach to move into the riffle, especially the smaller loach. Overall, the study showed that stone loach used cover in a visual isolation context, preferring deeper water when there was no predation risk, but made more use of shallower water in the presence of brown trout. 相似文献
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泥鳅粉及其加工副产品的营养学评价 总被引：1，自引：0，他引：1
利用常规营养测定方法,分别对泥鳅粉及其加工副产品进行营养分析与评价。结果表明：泥鳅水分含量为78.14%,泥鳅粉中蛋白质、脂肪和灰分含量分别为62.64%、8.01%和13.23%;加工副产品中蛋白质、脂肪和灰分含量分别为62.01%、7.76%和7.26%。泥鳅粉与其副产品中氨基酸组成成分一致,均含有17种氨基酸。4种呈味氨基酸含量分别为40.64%和44.98%,必需氨基酸指数（EAAI）分别为62.04和40.59,泥鳅粉构成比例符合FAO/WHO的标准,其副产品构成比例不符合FAO/WHO的标准。 相似文献
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四倍体泥鳅、二倍体泥鳅和大鳞副泥鳅营养成分分析 总被引：4，自引：0，他引：4
利用常规肌肉营养分析方法测定了四倍体泥鳅、二倍体泥鳅和大鳞副泥鳅的肌肉营养成分。结果表明：四倍体泥鳅、二倍体泥鳅和大鳞副泥鳅肌肉中（鲜重）蛋白质含量分别为18．68％、18．69％和18．20％;脂肪含量分别为0．796％、0．106％和1．203％;水分含量分别为79．81％、79．52％和78．40％;灰分含量分别为0．951％、1．188％和1．162％。三种泥鳅肌肉中都含有常见的17种氨基酸,其中包括9种人体必需氨基酸;氨基酸总量（占鲜重）分别为17．57％、18．11％和17．47％;必需氨基酸总量分别为7．84％、7．98％和7．76％;必需氨基酸的构成比例符合FAO／WHO的标准。鲜味氨基酸含量分别为6．98％、7．33％和6．95％。经比较分析,四倍体泥鳅和二倍体泥鳅肌肉中蛋白质含量、17种氨基酸含量、氨基酸总量和必需氨基酸总量均很接近,但都明显高于大鳞副泥鳅。 相似文献
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Gynogenetic diploids were induced in the loach, Misgurnus anguillicaudatus, by applying cold shock to the egg after fertilization with spermatozoa genetically inactivated by ultraviolet-ray irradiation, to examine their survival, growth and fertility. Eggs were obtained from orange phenotype loach (homozygous for a recessive demelanogenesis gene). Spermatozoa were obtained from black phenotype loach (homozygous for a dominant melanogenesis gene), and from common carp, Cyprinus carpio. All hybrids between loach and carp were inviably abnormal.Eggs fertilized with loach or carp spermatozoa irradiated at doses of 6000 and 12000 erg/mm 2 and then treated with cold water (1°C for one hour 4 and 5 min after fertilization developed into embryos with 61–78% survival. About 70–87% of newly-hatched fry were normal in appearance. Gynogenetic fish induced by both loach and carp spermatozoa showed lower rates of survival and growth than did the normal diploid controls. All gynogenetic fish from carp spermatozoa were female and 94.9% of the gynogenetic fish from loach spermatozoa were female. The second gynogenetic offsprings were produced from females selected from both gynogenetic groups. 相似文献
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Abstract – Along a stream, we investigated whether the abundance of stone loach ( Barbatula barbatula , L.) was related to the presence of brown trout ( Salmo trutta , L.) and instream habitat variables. First, a field survey was carried out where different habitat variables and the densities of both species were quantified and subjected to principal components analysis. Then the abundance of stone loach was related to the scores of the retained axes (eigenvalues >1). The abundance of stone loach was positively correlated to substrate particle size, amount of shade, temperature, discharge and current velocity, but negatively correlated to brown trout abundance. Secondly, a month-long field enclosure experiment in a stream was performed to test for any negative effects of brown trout on stone loach growth. Four treatments were used: intraspecific competition (stone loach at double density), interspecific competition (stone loach + small trout), predation (stone loach + large trout) and a control (stone loach alone). The results showed that large trout tended to have negative effects on final stone loach biomass. The absence of a negative effect of large trout on resource density suggests that nonlethal effects rather than resource competition caused this trend. 相似文献
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Two species of loach, the mud loach (Misgurnus mizolepis Günther) and the cyprinid loach (M. anguillicaudatus Cantor), are commercially important in Korea both for food and ceremonial purposes. The mud loach has superior potential for aquaculture in terms of growth, whereas the cyprinid loach has a more desirable body shape and colour. This study was conducted to produce reciprocal diploid and triploid hybrids and to evaluate their potential benefits in culture by examining growth performance, morphometrics and gonad development. Reciprocal diploid and triploid hybridization was performed by artificial insemination without or with the induction of triploidy. The successful formation of diploid or triploid karyogamy was verified by flow cytometric analysis. Body weights of induced reciprocal diploid hybrids were intermediate between those of the two parental species, i.e. hybrids were heavier than cyprinid loach but lighter than mud loach. In contrast, the growth performance of triploid hybrids was similar to that of their corresponding maternal parents. Diploid hybrids showed intermediate morphometric traits between the two species; however, the body proportions of triploid hybrids were more similar to those of the maternal species than the paternal species. Histological analyses indicated that reciprocal diploid hybrids of both sexes were able to reach maturity, as evidenced by the presence of mature oocytes or spermatozoa in the gonad tissues. However, triploid hybrids showed stringent sterility at the gonadic level; the sizes of ovaries and testes were much smaller, and gonad development was abnormal and significantly retarded. 相似文献