共查询到20条相似文献，搜索用时 738 毫秒
1.
利用微生态制剂促进水产动物健康养殖的研究进展 总被引：1，自引：0，他引：1
本文从六个方面论述微生态制剂对水产养殖动物的抗病作用和促营养机理：刺激机体免疫系统发挥作用,提高其免疫力;抑制病原菌;能有效防止有毒物质的积累;消除污染物,净化环境;菌体作为营养物质补充动物营养;产生酶等生理活性物质,促进消化吸收和生长发育。并简单介绍微生态制剂在水产动物养殖中的优点,展望微生态制剂应用前景。 相似文献
2.
当前我国的水产养殖业发展迅速,集约化、规模化养殖既带来了经济效益,也留下了亟待解决的种种问题。微生态制剂是以提高动物健康为目的的一种绿色环保饲料添加剂。本文综述了微生态制剂的分类、作用机理、在水产养殖业中的应用及其应用前景。 相似文献
3.
马洪雨 《兽药与饲料添加剂》2005,10(3):9-10
当前我国的水产养殖业发展迅速，集约化、规模化养殖既带来了经济效益，也留下了亟待解决的种种问题。微生态制剂是以提高动物健康为目的的一种绿色饲料添加剂。综述了微生态制剂的分类、作用机理、在水产养殖业中的应用及其前景。 相似文献
4.
微生态制剂及其在水产养殖业中的应用研究进展 总被引：2，自引：0，他引：2
当前我国的水产养殖业发展迅速，集约化、规模化养殖既带来了经济效益，也留下了亟待解决的种种问题。微生态制剂是以提高动物健康为目的的一种绿色环保饲料添加剂。本文综述了微生态制剂的分类、作用机理、在水产养殖业中的应用以及其应用前景。 相似文献
5.
本文综述微生态制剂的概念、作用机理、在水产养殖中的应用及微生态制剂的合理使用与注意事项．概括了水产微生态制剂具有抑制病原菌、刺激免疫系统、提高免疫力、提供营养、改善机体代谢、促进动物生长、改善水质的作用和功效．为水产微生态制剂的进一步研究提供了理论依据。 相似文献
6.
7.
微生态制剂在水产养殖中的应用 总被引：1，自引：0，他引：1
微生态制剂在水产养殖中的应用越来越多,作用也越来越大,本文在阐明微生态制剂定义和作用机理的基础上,对目前微生态制剂的种类及其在水产养殖中的应用进行了叙述,并就当前微生态制剂存在的问题和未来发展趋势提出看法。 相似文献
8.
9.
微生态制剂与水产养殖 总被引：3，自引：0，他引：3
随着我国水产养殖业的发展，养殖品种和规模日益扩大，与此同时生产中的病害问题也越来越严重。在防治病害中，大量使用抗生素取得了一定的效果，但也日益显露出其弊端。如耐药性的产生等使鱼消化道内有益菌群失衡，从而使鱼病的防治日益困难，生态环境也受到了严重破坏。因此微生态制剂在水产养殖中的应用，已成为当前研究的新热点。1 水产动物微生态制剂的分类水产动物微生态制剂可以使鱼体内或其生活环境中的微生物达到菌群平衡，也可以人为的使有益微生物成为优势菌群，减少有害菌对鱼体的侵袭，从而达到防病治病的目的。水产动物微生态… 相似文献
10.
11.
Chistiakov DA Hellemans B Volckaert FA 《Veterinary immunology and immunopathology》2007,117(1-2):1-16
European sea bass (Dicentrarchus labrax L.) is a marine species of great economic importance, particularly in Mediterranean aquaculture. However, numerous pathogenic viruses, bacteria, fungi and parasites affect the species, causing various infectious diseases and thereby leading to the most heavy losses in aquaculture production of sea bass. In this respect, knowledge on molecular and genetic mechanisms of resistance to pathogens and specific features of immune response against various infectious agents should greatly benefit the development of effective vaccines and proper vaccination strategies in marker-assisted selection of fish resistant to a range of infections. To date, genetic knowledge on sea bass immune regulatory genes responsible for resistance to pathogens is relatively poor but tends to accumulate rapidly. In this review, we summarize and update current knowledge on the immune system and immune regulatory genes of the sea bass. 相似文献
12.
14.
15.
本试验旨在研究青苔和大叶藻对刺参生长性能及免疫指标的影响。试验选取720头平均质量为0.35 g的刺参,随机分为3个组,每个组3个重复,每个重复80头刺参。以青苔、大叶藻和海带为主要藻类蛋白质源,分别制成3种不同配合饲料饲喂刺参,海带组为对照组,青苔组及大叶藻组为试验组。试验期8周。通过评估刺参的生长性能、体壁营养成分、消化酶活性及非特异性免疫指标评价青苔和大叶藻对刺参健康生长的影响。结果表明:青苔组和大叶藻组增重率较对照组分别增加了29.15%和24.13%,饲料系数较对照组降低了10.39%和15.58%,但各组间无显著差异(P0.05);青苔组和大叶藻组刺参脏壁比、肠重比显著低于对照组(P0.05),体壁水分含量显著高与对照组(P0.05);大叶藻组体壁粗灰分含量显著高于青苔组和对照组(P0.05);青苔组和大叶藻组刺参肠道淀粉酶活性显著低于对照组(P0.05);青苔组体腔液谷胱甘肽过氧化物酶(GSH-Px)活性显著高于对照组和大叶藻组(P0.05),过氧化物酶(POD)、超氧化物歧化酶(SOD)和酸性磷酸酶(ACP)活性均高于对照组和大叶藻组,但各组间无显著差异(P0.05);大叶藻组体腔液碱性磷酸酶(ALP)活性显著低于对照组(P0.05),与青苔组无显著差异(P0.05)。由此可见,在本试验条件下,青苔和大叶藻作为饲料原料应用于刺参饲料中是可行的;以生长性能指标为基础,结合抗氧化及非特异性免疫指标,刺参生长效果为青苔组大叶藻组海带组。 相似文献
16.
17.
A preadipocyte primary cell culture was established to gain knowledge about adipose tissue development in gilthead sea bream (Sparus aurata), one of the most extensively produced marine aquaculture species in the Mediterranean. The preadipocytes obtained from the stromal-vascular cell fraction of adipose tissue proliferated in culture, reaching confluence around day 8. At that time, the addition of an adipogenic medium promoted differentiation of the cells into mature adipocytes, which showed an enlarged cytoplasm filled with lipid droplets. First, cell proliferation and differentiation were analyzed under control and adipogenic conditions during culture development. Next, the effects of insulin, GH, and IGF-I on cell proliferation were evaluated at day 8. All peptides significantly stimulated proliferation of the cells after 48 h of incubation (P < 0.002 for GH and IGF-I and P < 0.05 for insulin), despite no differences were observed between the different doses tested. Subsequently, the effects of insulin and IGF-I maintaining differentiation when added to growth medium were studied at day 11, after 3 d of induction with adipogenic medium. The results showed that IGF-I is more potent than insulin enhancing differentiation (P < 0.01 for IGF-I compared with the control). In summary, a primary culture of gilthead sea bream preadipocytes has been characterized and the effects of several regulators of growth and development have been evaluated. This cellular system can be a good model to study the process of adipogenesis in fish, which may help improve the quality of the product in aquaculture. 相似文献
18.
芽孢乳酸菌的作用机制及在水产养殖中应用前景 总被引：1，自引：0，他引：1
芽孢乳酸菌是一种内生孢子的活菌制剂,与其他益生菌相比具有更好的抗逆性、稳定性、耐热性、易保存等特性。芽孢乳酸菌既可以产乳酸又能产生芽孢,具有乳酸菌和芽孢杆菌的双重优势。因此,芽孢乳酸菌是一种优质的微生态制剂,能够在水产养殖中有更好的应用前景。本文主要是对芽孢乳酸菌在水产养殖的应用及其机制做综述,并对芽孢乳酸菌发展前景及存在的问题作探讨。 相似文献
19.
Mohammad Jalil Zorriehzahra Somayeh Torabi Delshad Ruchi Tiwari K. Karthik Kuldeep Dhama 《The Veterinary quarterly》2016,36(4):228-241
Wide and discriminate use of antibiotics has resulted in serious biological and ecological concerns, especially the emergence of antibiotic resistance. Probiotics, known as beneficial microbes, are being proposed as an effective and eco-friendly alternative to antibiotics. They were first applied in aquaculture species more than three decades ago, but considerable attention had been given only in the early 2000s. Probiotics are defined as live or dead, or even a component of the microorganisms that act under different modes of action in conferring beneficial effects to the host or to its environment. Several probiotics have been characterized and applied in fish and a number of them are of host origin. Unlike some disease control alternatives being adapted and proposed in aquaculture where actions are unilateral, the immense potential of probiotics lies on their multiple mechanisms in conferring benefits to the host fish and the rearing environment. The staggering number of probiotics papers in aquaculture highlights the multitude of advantages from these microorganisms and conspicuously position them in the dynamic search for health-promoting alternatives for cultured fish. This paper provides an update on the use of probiotics in finfish aquaculture, particularly focusing on their modes of action. It explores the contemporary understanding of their spatial and nutritional competitiveness, inhibitory metabolites, environmental modification capability, immunomodulatory potential and stress-alleviating mechanism. This timely update affirms the importance of probiotics in fostering sustainable approaches in aquaculture and provides avenues in furthering its research and development. 相似文献
20.
β-葡聚糖来源广泛，主要存在于植物和微生物细胞壁中，由葡聚糖单体构成，具有多种结构，因其侧链残基种类和数量的不同而具有多种生物学功能，如通过降低炎症相关基因表达及提高免疫因子的表达发挥调节免疫的作用；通过减少脂质的产生和吸收发挥调节脂质代谢的作用；通过提高抗氧化酶、自由基、超氧阴离子的清除活性及激活Nrf2信号通路、上调抗氧化基因的表达来增强机体的抗氧化能力，发挥抗氧化作用；通过增强缺氧耐受性及提高抗氨氮应激能力、能量代谢和抗氧化酶基因的表达等发挥抗应激作用。自抗生素禁用以来，β-葡聚糖在水产动物中的研究和应用逐渐深入，β-葡聚糖在预防水产动物疾病和减少抗生素使用等方面发挥着重要作用。在水产养殖中，β-葡聚糖可通过提高消化酶活性、改善肠道结构、优化肠道菌群及增强非特异性免疫力来提高水产动物生长性能，β-葡聚糖的联合使用比添加单一种类的免疫刺激剂具有更好的免疫效果。作者就β-葡聚糖的结构特征、生物学活性、作用机制及在水产动物中的应用进行了综述，并对β-葡聚糖今后的发展方向进行了展望，为实现水产动物生态健康养殖提供材料。 相似文献