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一、秸秆与青绿饲料的营养特点: 1.秸秆:作物秸秆内含有可消化物质35%~50%,粗蛋白质含量2%~4%,是无粮型饲料资源中较为理想的一部分。就全国而言,每年各类秸秆产量近6亿吨,其含粗蛋白质总量约0.2亿吨,相当于2.5亿吨玉米所含蛋白质总量。但是秸秆的细胞具有厚而坚实且富含纤维素的细胞壁,直接喂单胃动物,由于消化功能局限性,很难从其坚厚的细胞壁保护下的细胞内及繁杂的纤维组织间吸收营养物质。因此,从饲用效果上考虑,无论多胃动物或是单胃动物,都有个基于秸秆的营养特点而如何科学利用之“生产工艺”问题。 2.青绿饲料:青绿饲料是处于青绿状态的饲料。我 相似文献
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据研究,致力开发利用无粮型饲料发展养殖业,既是国情需要,也具有先进技术与措施。关键在于从实际出发,根据无粮型饲料资源之不同营养特点,采取相应益于养殖业的科学利用措施。 相似文献
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随着牧业的发展,畜禽养殖总量不断增加,有限的耕地面积所提供的饲料粮已难以满足养殖业的需要,畜粮矛盾日益突出。因地制宜地开发非粮型饲料资源对缓解畜粮矛盾,进一步向质量效益型牧业转变具有重要的意义,也是饲料原料工业发展的必然趋势。1.林产品资源的开发与利用:通化市位于吉林省东部山区,有松针叶林20多万公顷,年产松针叶25-30万吨,可开发松针叶粉饲料6-7万吨,可替代饲料粮6~7万吨。经测定,松针粉含水分5.89%、粗蛋白质6.14%、粗脂肪11.49%、粗纤维20.79%、钙0.48%、磷0.09… 相似文献
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谷草的营养特点及开发利用 总被引:2,自引:0,他引:2
作为非竞争性饲料资源.农作物秸秆价格低廉,是反刍动物极好的饲料。秸秆是农作物光合作用的产物,贮存有丰富的营养物质.是宝贵的粗饲料来源。我国每年约生产6~8亿吨作物秸秆.约占世界秸秆总量的20%~30%,且种类繁多.所含粗蛋白质总量约0.2亿吨.相当于2.5亿吨玉米所含蛋白质的总量。 相似文献
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发展畜牧业开发代粮饲料资源,是解决饲料不足的一条重要途径。据介绍,全世界有松树10属230种,我国有10属120种,国内松林占全国森林面积1.27亿多hm2的1.05%~1.06%,且遍布各地,年产嫩枝叶可达数亿t。松针树木为世界上分布最广,资源最大的树种之一,国外早已开发利用其作畜禽饲料,且应用效果很好。松针饲料是指松科树木的嫩枝叶的加工产品,是一种理想的代粮饲料。1松针饲料的营养成分1.1松针含有大量粗蛋白质如干的马尾松针含粗蛋白质为9.8%,黄山松为11.9%,落叶松为15.2%。松针不仅… 相似文献
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农作物秸秆加工成饲料的几种新技术周如太(安徽农业技术师范学院)农作物秸秆内含有35~50%的可消化干物质,2~4%的粗蛋白质。我国每年农作物秸秆约有5亿吨,在粮食紧缺和饲料不断涨价的情况下,充分利用丰富的秸秆作饲料资源,对畜牧业的发展具有十分重要的意... 相似文献
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青海省秸秆资源开发利用研究 总被引:2,自引:0,他引:2
通过大样本试验,测算了青海省主要农作物的秸秆系并计算出青海省秸秆总量为186.5541万t。其中小麦秸92.7494万t,油菜秸44.7427t,居一,二倍。在调查研究和分析基础上,指出了青海省秸秆资源利用不合理的现状,饲用率较低,仅占总量的10%-20%,加工饲用率为1.2%,烧用占44.88%,其它占35.12%-45.12%。提出了青海省秸秆资源开发利用的途径。 相似文献
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作为非竞争性饲料资源,农作物秸秆价格低廉,是反刍动物极好的饲料.秸秆是农作物光合作用的产物,贮存有丰富的营养物质,是宝贵的粗饲料来源.我国每年约生产6~8亿吨作物秸秆,约占世界秸秆总量的20%~30%,且种类繁多,所含粗蛋白质总量约0.2亿吨,相当于2.5亿吨玉米所含蛋白质的总量. 相似文献
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白腐真菌与秸秆饲料的有效利用 总被引:13,自引:2,他引:11
农作物秸秆是一种潜在的非竞争资源,在我国具有数量大、分布广、种类多等特点。据估计,每年各类秸秆的总产量约5-7~6亿t。而目前用于饲料部分还不足10%。所以,探索秸秆处理措施,提高秸秆的营养价值,扩大有效利用范围,已引起人们的广泛关注。目前,秸秆利用的主要方法有物理法(切碎、泡软、蒸煮),化学法(氨化、碱化、酸化等)和生物法。在生物法处理中,只有少数真菌能同时分解所有的植物聚合物,主要是白腐真菌。利用白腐真菌处理秸秆,提高秸秆饲料的有效利用的研究已取得了很大进展。1 限制秸秆饲料有效利用的主要因… 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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