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豆粕是养鸡生产过程中常用的饲料蛋白原料,可为鸡的生长和发育提供优质蛋白,但对鸡也存在一定抗营养因子以及消化不完全的问题。发酵豆粕是利用有益微生物将豆粕在体外发酵而获得的豆粕,和普通豆粕相比,其具有提升采食量、降低疾病发生率、脱毒更彻底、减轻胃肠道负担等价值优点。使用时应注意选用禽专用的益生菌发酵的豆粕,用前进行质量鉴别,设计配方时注意饲料总蛋白含量的变化。 相似文献
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<正>湿发酵豆粕在畜禽饲料中的添加应用具有饲喂效果良好、经济效益高、节能减排等明显优势。本文对湿发酵豆粕的营养特性、添加工艺及其对畜禽生产性能的影响等方面进行综述,为湿发酵豆粕在畜禽配合饲料中添加及应用技术提供参考。 相似文献
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发酵豆粕和去皮豆粕离体消化率的比较 总被引：2，自引：0，他引：2
我国养殖业快速发展,饲料资源、尤其是动物性蛋白质饲料资源非常缺乏。在我国水产饲料中,豆粕是优质蛋白资源之一,在饲料中的使用量较大,是水产饲料的主要蛋白质原料之一。发酵豆粕以去皮豆粕为原料,经过微生物混合菌种固体发酵后得到的蛋白质原料。进行发酵的目的主要是为了去除豆粕中存在的抗营养因子如抗胰蛋白酶因子、大豆皂苷等,并提高养殖动物对豆粕蛋白质、氨基酸的消化、利用效率。对饲料蛋白质原料品质鉴定的常规方法是测定其蛋白质含量,但仅仅测定蛋白质含量有一定的局限性,近年发展了离体消化率测定和消化液中氨基酸生成率的测定,可以对蛋白质原料的实际消化效果进行有效的评价。该文应用这一方法对发酵豆粕和去皮豆粕的蛋白质消化率、消化后氨基酸生成率进行了比较分析,为发酵豆粕和去皮豆粕在淡水鱼饲料中的使用提供参考依据。 相似文献
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生物技术处理豆粕多利用益生菌发酵及酶解的作用,将豆粕中大分子物质和抗营养因子进行分解、转化。发酵后的豆粕抗营养因子含量低;富含有益菌、活性酶,提高了小分子有机酸、维生素、游离氨基酸等发酵代谢产物的含量;提高了豆粕的适口性和利用率。利用益生菌处理的发酵豆粕及利用酶处理的酶解豆粕可将豆粕中的大分子蛋白降解为小肽、氨基酸,提高豆粕的消化利用率。菌酶协同发酵豆粕,在微生物发酵的基础上添加外源蛋白酶,由于微生物和酶有较好的协同作用,大分子物质被降解得更彻底,与微生物发酵、酶解相比,缩短了发酵周期,效率更高。生物技术处理豆粕提高了豆粕利用率、畜禽健康水平、畜产品品质,并具有改善养殖环境的功能。文章综述了生物技术处理豆粕的工艺特点、营养特性、代谢产物、应用效果,并进行了总结、分析,对以豆粕为代表的植物蛋白饲料资源的开发和应用有一定的参考意义。 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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