Age-related changes in hematology and plasma chemistry values of hybrid striped bass (Morone chrysops X Morone saxatilis)     

Hrubec TC  Smith SA  Robertson JL 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2001,30(1):8-15

Hybrid striped bass (Morone chrysops X Morone saxatilis ) are an important aquaculture species yet there are few diagnostic tools available to assess their health. Hematology and clinical chemistry analyses are not used extensively in fish medicine due to the lack of reference intervals for various fish species, and because factors such as age can affect blood values. There is little published information regarding age-related changes in blood values of juvenile fish. It is important to evaluate juvenile fish, as this is the time they are raised in aquaculture settings. Determining age-related changes in the blood values of fishes would further develop clinical pathology as a diagnostic tool, enhancing both fish medicine and the aquaculture industry. The results of standard hematology and clinical chemistry analysis were evaluated in juvenile hybrid striped bass at 4, 6, 9, 15, and 19 months of age. Values for PCV and RBC indices were significantly lower, and plasma protein concentration was significantly higher in younger fish. Total WBC and lymphocyte counts were significantly higher in fish at 6 and 9 months of age, while neutrophil and monocyte counts were higher at 6, 9, and 15 months. Eosinophil counts were significantly higher in 9-month-old fish. The majority of hematologic values fell within previously established reference intervals, indicating that only slight modification to the intervals is necessary for evaluating hematologic results of hybrid striped bass at different ages. The following analytes deviated sufficiently from adult reference intervals to warrant separate reference values: plasma protein concentration at 4 months, WBC and lymphocyte counts at 15 and 19 months, and thrombocyte-like-cells at 9 months of age. Values for most biochemical analytes were significantly different among age groups except for creatinine and potassium concentrations. Comparisons with reference intervals were not made for biochemical analytes, because established reference intervals were not available. Age-related changes in hematologic and biochemical values of striped bass were similar to those reported for rainbow trout and mammals.  相似文献   

Blood chemistry values of juvenile red pacu (Piaractus brachypomus)     

Sakamoto K  Lewbart GA  Smith TM 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2001,30(2):50-52

Abstract: Blood samples were collected from 29 juvenile red pacu ( Piaractus brachypomus ), ornamental freshwater fish, to establish baseline blood chemistry values. Mean (minimum-maximum) values, obtained by automated bichromatic analysis and ion selective electrode analysis, were as follows: sodium, 150.4 (146–159) mmol/L; potassium, 3.93 (2.7–5.0) mmol/L; chloride, 138.7 (128–150) mmol/L; total CO₂, 7.5 (6–10) mmol/L; albumin, 0.86 (0.5–1.0) g/dL; lactate dehydrogenase, 237.8 (65–692) IU/L; aspartate aminotransferase, 49.1 (0–125) IU/L; creatinine, 0.31 (0.2–0.4) mg/dL; calcium, 10.80 (9.5–12.5) mg/dL; anion gap, 6.89 (1.2–12.5) mmol/L; and phosphorus, 7.29 (4.1–8.9) mg/dL.  相似文献   

Effect of pyrethroids on carbohydrate metabolic pathways in common carp,Cyprinus carpio     

K Kamalaveni  V Gopal  Ursula Sampson  D Aruna 《Pest management science》2001,57(12):1151-1154

The activity levels of succinate dehydrogenase (SDH) and glucose‐6‐phosphate dehydrogenase (G6PD) were assessed in various tissues of Cyprinus carpio var communis which had been exposed to lethal concentrations of group‐II pyrethroids (deltamethrin, cypermethrin, fenvalerate and fluvalinate) for a period of 72 h. The results indicated a steady decrease in SDH activity with a concomitant increase in G6PD activity. The decreased SDH activity indicated inhibition of SDH at mitochondrial level and the increased G6PD activity an enhancement of an alternative pathway of carbohydrate metabolism, viz the hexose monophosphate shunt (HMP) or pentose phosphate pathway as a biochemical adaptation to overcome the toxic stress. © 2001 Society of Chemical Industry  相似文献   

百倍冲水库种草养鱼防淤试验初报     

李科云  盛文亮  孙祥贵 《草业学报》1993,(3)

百倍冲水库自1976年修建以来,养鱼由于饲料长期缺乏,300亩养鱼水面常年产鲜鱼1000kg左右,库内每年淤积泥砂0.6～0.8万立方米。作者于1985～1987年在库内的消落区种植黑麦草,紫云英;荒山种象草、扁穗牛鞭草;堤坝上种岸杂一号狗牙根;幼林地种鸡脚草、拉丁鲁白三叶等牧草配套养鱼和防止水土流失进行试验研究。结果,库内年鲜鱼产量由种草前1000kg提高到7000～8000kg,泥砂淤积量每年减少0.516万立方米,经济生态效益显著。  相似文献   

清塘净对鱼类等水生生物急性致毒的研究   总被引：1，自引：0，他引：1  

何绪刚 《湖北农学院学报》1996,16(4):289-294

清塘净对鱼类等水生生物毒性强，毒力降解速度较快，是好的清塘药物。对黄鳝等水生生物９６ｈ的ＬＣ５０及安全质量浓度分别为：黄鳝２．４１ｍｇ／Ｌ和０．２４１ｍｇ／Ｌ；鲤鱼苗０．３８ｍｇ／Ｌ和０．０３８ｍｇ／Ｌ；草鱼苗０．４１ｍｇ／Ｌ和０．０４１ｍｇ／Ｌ；大型蚤０．５２ｍｇ／Ｌ和０．０５２ｍｇ／Ｌ；湖螺２．３３ｍｇ／Ｌ和０．２３３ｍｇ／Ｌ；泥鳅３．０４ｍｇ／Ｌ和０．３０４ｍｇ／Ｌ。  相似文献   

鱼类主要内分泌激素和蛋白质代谢的关系   总被引：1，自引：0，他引：1  

王桂芹  周洪琪 《中国饲料》2007,(5):35-38

本文就鱼类主要的内分泌激素(T3、T4、GH、IGF-Ⅰ)对蛋白质代谢的调控以及饲料蛋白质质量和数量对鱼类内分泌激素分泌的调控进行概述。  相似文献   

鱼类对饲料中糖的利用研究进展   总被引：8，自引：0，他引：8  

谭肖英  罗智  刘永坚 《中国饲料》2007,(6):19-23

糖类是鱼类饲料中廉价的能量源,然而,与陆生动物相比,鱼类对饲料中糖的利用能力较低。本文综述了这方面的最新研究进展,包括鱼类对饲料糖的利用能力与鱼饲料中糖的适宜含量、影响因素及鱼类的糖代谢机制。  相似文献   

喷雾干燥鱼浆蛋白粉营养成分分析     

陈宜芳  何瑞国  任泽林  程一兵 《中国饲料》2007,(6):32-33

本试验对鱼粉加工废水鱼浆蛋白粉(经浓缩、水解、喷雾干燥得到的副产品)进行营养成分分析,其中粗蛋白质含量达64.08%,钙2.67%、磷1.12%,钙磷比例合理;各氨基酸含量分别为:赖氨酸3.29%,蛋氨酸0.94%,谷氨酸5.17%,牛磺酸2.50%。  相似文献   

用改进的酚-氯仿法提取鱼类基因组DNA效果的分析     

马洪雨  郭金峰  岳永生 《家畜生态》2006,(2)

提取鱼类基因组DNA的研究报道并不多见,效果也各有差异。本文以泰山螭霖鱼、东平湖鲤鱼、东平湖鲫鱼为材料,采用改进的酚-氯仿法提取基因组DNA,并进行了紫外分光光度、琼脂糖凝胶电泳、微卫星PCR扩增等方法的鉴定。结果表明,本方法提取的基因组DNA浓度在0.9μg/μL~3.25μg/μL之间,A260/A280比值在1.79~1.87之间,电泳条带整齐明亮,适合微卫星PCR扩增,且整个操作过程使用试剂较少,简单易行。  相似文献   

甲醛处理豆粕对蛋白质瘤胃降解及活体外瘤胃发酵的影响   总被引：3，自引：1，他引：3  

何文娟  孟庆翔 《中国饲料》2006,(6):10-13

通过尼龙袋试验和产气量试验研究甲醛处理大豆粕对瘤胃蛋白质降解率、产气量和活体外瘤胃发酵参数的影响。3个处理分别为对照组、处理Ⅰ和处理Ⅱ,其中处理Ⅰ、处理Ⅱ的甲醛添加量分别占大豆粕粗蛋白质(CP)0.6%和1.2%。研究结果表明:与对照组相比,处理Ⅰ和处理Ⅱ的干物质及蛋白质的降解率及降解速度显著下降(P<0.001),快速降解组分的比例和有效降解率显著下降,慢速降解组分比例显著提高(P<0.001),但两处理组之间干物质降解速度和蛋白质慢速降解组分比例均无显著差异(P>0.05)。与对照组相比,处理Ⅰ与处理Ⅱ的72h产气量和理论最大产气量均显著升高(P<0.001),而产气速度显著降低(P<0.005);甲醛处理对活体外瘤胃72h发酵的pH值、NH3-N浓度没有显著影响(P>0.05),但发酵液中丙酸摩尔比例显著上升(P<0.05),从而导致乙酸/丙酸降低。两个处理组活体外24h发酵液中甲醛浓度分别为0.994μg/mL和0.370μg/mL;而72h发酵液中甲醛浓度分别为0.410μg/mL和0.141μg/mL。本试验结论:甲醛处理能有效降低蛋白质在瘤胃内的降解率,并改善活体外发酵参数,其中甲醛添加量以占0.6%CP的处理更为有效。  相似文献