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牛磺酸在动物营养中的应用 总被引:17,自引:2,他引:15
牛磺酸是动物体内的一种含硫氨基酸,其化学名为2-氨基乙磺酸。化学结构式为NH2CH2CH2SO3H,分子量为125.15,无色。牛磺酸广泛分布于动物体内各组织器官,并且主要以游离状态存在于组织间液和细胞内液中。1827年首次从牛胆中分离出来,故而得名为牛磺酸。长期以来,牛磺酸一直被认为是含硫氨基酸的无功能代谢产物。自从1975年Hayes等报道,缺乏牛磺酸会导致幼猫视功能减退,甚至失明后,引起了人们对牛磺酸营养作用的极大关注。近年来,国内外学者对牛磺酸进行了深入的研究,发现它是调节机体正常生理机能的重要物质,在动物营养中起… 相似文献
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牛磺酸是体内一种游离氨基酸,具有重要的生物学功能和应用价值。本文综述了牛磺酸的理化性质、合成代谢、营养生理功能及其在动物营养中的应用。 相似文献
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牛磺酸在动物内分泌系统中的生理作用 总被引:1,自引:0,他引:1
牛磺酸是一种含硫条件性必需氨基酸,对机体生长发育、繁殖、免疫机能等有重要的营养和生理作用。研究表明,机体缺乏牛磺酸时,内分泌系统功能发生障碍,导致各种内分泌疾病发病率上升,包括甲状腺功能亢进、生殖功能退化、糖尿病、肾脏疾病等内分泌疾病,阻碍机体正常的生长与发育,严重影响畜牧养殖业。近年来,关于牛磺酸对内分泌系统作用的研究并不多,临床上的应用上更不多见。论文对牛磺酸在下丘脑-垂体、甲状腺、肾上腺、性腺、胰岛等器官的内分泌作用进行综述,为牛磺酸在畜牧生产中的应用提供参考。 相似文献
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蜂王浆中牛磺酸的营养保健作用 总被引:2,自引:0,他引:2
蜂王浆中牛磺酸的营养保健作用湖北省黄冈市农牧局(黄州体育路29号,邮编:436100)郭芳彬牛磺酸(Taurine)是1872年科学家首次从牛胆中分离出来的一种游离氨基酸,因此而得名为牛磺酸。牛磺酸的学名为2-氨基乙磺酸,分子式NH2CH2CH2SO... 相似文献
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一、牛磺酸简介"牛磺酸(Taurine)又名牛黄酸、牛胆酸、牛胆碱、牛胆素,但通常叫牛磺酸,因1827年首次从牛胆汁中分离出来而得名。其化学名称为:2-氨基乙磺酸,化学式:H2N-CH2-CH2-SO3H,结构简单,分子量约为125道尔顿。常温常压下为无色四面针状结晶,微溶于水,易溶于乙酸,熔点为30 相似文献
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PHYLLIS G. CROFT 《The Journal of small animal practice》1965,6(4):261-271
Abstract— Differential diagnosis of some of the common conditions affecting the central nervous system of the dog and cat is discussed. Treatment and prognosis are also considered. The paper is based on the 570 neurological cases examined at the Unit during the past 3 years.
Résumé— L'auteur fait le diagnostic diférentiel de quelques affections communes du systéme nerveux central du chien et du chat. Il en considère aussi le traitement et le pronostic. Cette étude est basée sur 570 cas neurologiques examinés au Centre pendant les trois dernières années.
Zusammenfassung— Es wird die Differentialdiagnose einiger häufig vorkommender Affektionen erörtert, die das ZNS bei Hund und Katze befallen. Dabei werden auch Therapie und Prognose berücksichtigt. Die Abhandlung beruht auf der Untersuchung von 570 neurologischen Fällen in der Forschungsanstalt während der vergangenen drei Jahre. 相似文献
Résumé— L'auteur fait le diagnostic diférentiel de quelques affections communes du systéme nerveux central du chien et du chat. Il en considère aussi le traitement et le pronostic. Cette étude est basée sur 570 cas neurologiques examinés au Centre pendant les trois dernières années.
Zusammenfassung— Es wird die Differentialdiagnose einiger häufig vorkommender Affektionen erörtert, die das ZNS bei Hund und Katze befallen. Dabei werden auch Therapie und Prognose berücksichtigt. Die Abhandlung beruht auf der Untersuchung von 570 neurologischen Fällen in der Forschungsanstalt während der vergangenen drei Jahre. 相似文献
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R. Sayed W. Mubarak A. Ohtsuka Y. Atoji T. Murakami 《Anatomia, histologia, embryologia》2005,34(S1):45-45
The remnant of ultimobranchial (UB) body in the thyroid gland of adult buffalo was studied. This remnant appeared in the form of irregular and elongated follicles of various size and shape with folded lumen. These structures occupied a peripheral location beneath the capsule, as well as being embedded mostly in the vascular connective tissue of the thyroid. Calcitonin cells were predominantly localized in the UB follicles. Scanning electron microscopy revealed that surface of most UB follicular cells was almost flat and polyhedral or hexagonal in shape. Other follicles possessed cells with dome shaped apical surface demarcated by a shallow intercellular depression. The luminal surface of the follicular cell lining was studded with microvilli that appeared with various density and length and were numerous at the cellular borders. Interestingly, most of UB follicular cells were provided with single cilium, projecting over the cell surface. Notably some UB follicles presented various stages of apocrine activities. 相似文献
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Antognini JF Chen XG Sudo M Sudo S Carstens E 《Veterinary research communications》2001,25(7):523-538
The direct and indirect effects of nitrous oxide (N2O) on the nociceptive responses of lumbar dorsal horn neurons, and the indirect effects on midbrain reticular formation (MRF) neurons and thalamic neurons were determined in goats anaesthetized with isoflurane. The technique used enabled the differential delivery of N2O to either the torso or the cerebral circulation, thus allowing assessment of the direct spinal and indirect brain effects of N2O. Systemic delivery of N2O appeared to have divergent effects, facilitating (4/11) or depressing (7/11) the responses of dorsal horn neurons. Such divergent effects were also observed when N2O was differentially delivered to the circulation in the torso (i.e. the spinal cord). Likewise, MRF and thalamic responses to noxious stimulation were variably affected by administration of N2O to the torso, with some cells facilitated (7/13 MRF neurons, 3/8 thalamic neurons) and others depressed (6/13 MRF neurons, 5/8 thalamic neurons). It appears that N2O has variable effects on the caprine CNS. The facilitatory action of N2O might partially explain why it is a relatively weak anaesthetic. 相似文献
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