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嫩度是影响猪肉品质的重要性状之一,肉品的嫩度取决于肌肉结构及其相关蛋白质的变化程度。影响肌肉嫩度的因素有很多,其中钙蛋白酶系统在肌肉嫩化过程中发挥着重要作用。钙蛋白酶抑制蛋白是钙蛋白酶系统的成员之一,同时也为钙蛋白酶抑制蛋白基因的表达产物,钙蛋白酶抑制蛋白基因为调控猪肉品质的候选基因之一。作者对影响肌肉嫩度的因素、钙蛋白酶系统的结构和生理功能,以及钙蛋白酶系统和钙蛋白酶抑制蛋白基因型对猪肉嫩度的影响进行综述。 相似文献
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肉嫩度及其影响因素的研究 总被引：1，自引：0，他引：1
近年来,人们对畜禽肉的品质要求越来越高,而嫩度作为肉品质的重要指标之一．已越来越引起人们的重视,结合国内外对肉嫩度的研究现状,系统的总结了影响猪肉嫩度的因素,同时对不同因素的影响机理及研究进展作了阐述,这将有助于我国肉类科学的发展。 相似文献
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钙蛋白酶蛋白系统是影响肌肉生长和宰后肉嫩化的一个重要因素,主要由钙蛋白酶(μ-calpain和m-cal-pain)、钙蛋白酶抑制蛋白(calpastatin,CAST)及骨骼肌特异性钙蛋白酶(muscle specific calpain,P94)组成,钙蛋白酶抑制蛋白是一种内源性专一抑制钙蛋白酶(calpain)活性的蛋白,参与了调控肌原纤维蛋白的降解并在其中发挥了关键作用。本文概述了钙蛋白酶系统、钙蛋白酶抑制蛋白的结构、功能及其对提高肉嫩度的作用。 相似文献
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钙蛋白酶系统在肌肉生长和肉品嫩化方面的研究 总被引：1，自引：0，他引：1
钙蛋白酶系统主要由钙蛋白酶(calpain)及钙蛋白酶抑制蛋白(calpastatin)组成,calpain是存在于细胞质中的依赖于Ca2+的中性蛋白酶,calpastatin是钙蛋白酶的内源抑制蛋白。近年的研究表明,calpain是细胞质中主要的蛋白水解酶,在肌原纤维蛋白降解中起着重要的作用。肌肉增长和宰后嫩度的变化与蛋白质水解程度密切相关。因此,钙蛋白酶系统的活性会影响畜禽肌肉增长和肉的嫩度。文中综述了钙蛋白酶系统各种酶的结构及其如何在肌肉生长和肉的嫩化中起作用。 相似文献
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钙蛋白酶系统研究进展 总被引：5，自引：0，他引：5
钙蛋白酶系统主要是由钙蛋白酶类和钙蛋白酶抑制蛋白组成。钙蛋白酶细胞内主要的蛋白水解酶,参与神经发育、肌纤维降解、信号传导等过程。因此,钙蛋白酶系统在肌肉生长、改善肉的嫩度及治疗某些疾病等方面起着重要的作用。本文主要就其成员、结构、功能等方面作一综述。 相似文献
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钙蛋白酶抑制蛋白基因被认为是肉质嫩度的候选基因.文章对牛钙蛋白酶抑制蛋白基因结构、钙蛋白酶抑制蛋白基因多态性以及钙蛋白酶抑制蛋白基因活性影响牛肉肉质嫩度的研究进展进行了综述,并对未来该基因与嫩度的研究进行了展望,旨在为该基因与牛肉肉质嫩度的深入研究提供理论参考. 相似文献
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肉嫩度是衡量肉质优劣的重要指标之一。近年来,人们试图通过各种方法来改善肉质的嫩度,以满足消费者的需求,但通过非遗传因素来提高肉的嫩度成效不大[1],随着分子生物技术的发展,标记辅助 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures. 相似文献
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在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。 相似文献
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近几年,世界饲用添加剂市场增长较快,预计今后将进一步增长,据世界粮农组织(FAO)首领会议的倡议,到2015年,将使世界营养不良的人口削减一半,其间,肉制品将会以每年2％的速度增长,特别是加快猪肉和禽肉增长。这将促进世界添加剂,尤其是蛋氨酸和赖氨酸需求量的增加。 相似文献
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