野草饲喂肉兔的适口性观察

为了解肉兔对豫西地区各类野草的适口性,提高野草在养兔生产中的利用效果,本试验利用当地50种常见野草饲喂日本大耳白兔、哈白兔及二者杂种,观察肉兔对野草的适口性。根据家兔的采食行为表现将其适口性分为适口、较适口、适口性较差三类。结果：适口的野草有23种;较适口的野草有21种;适口性较差的野草有6种。     

野草饲喂肉兔的适口性观察

为了解肉兔对豫西地区各类野草的适口性,提高野草在养兔生产中的利用效果,本试验利用当地50种常见野草饲喂日本大耳白兔、哈白兔及二者杂种,观察肉兔对野草的适口性.根据家兔的采食行为表现将其适口性分为适口、较适口、适口性较差三类.结果适口的野草有23种;较适口的野草有21种;适口性较差的野草有6种.     

加拿大一些栽培牧草的适口性

评价了十个种类牧草和一组混播牧草在三个不同生长期的产量及适口性。俄罗斯野麦草的适口性最好,但产量最低;中间冰草产量最高,但适口性差;雀麦是产量高适口性也好的品种。豆科植物中,鸟足三叶草的适口性最好,产量也相当高;苜蓿产量高,适口性也好。试验证明,从牧草产量和适口性两方面来看,混播牧草都优于单一草种的草场。在牧草生长的一定时期中,其含水量、粗蛋白质、消化半和粗纤维均对适口性有影响。     

不同诱食剂对黄河鲤药饵摄食适口性的影响

为评价不同种类抗生素和诱食剂对黄河鲤摄食适口性的影响,试验采用摄食量法,以氟苯尼考、恩诺沙星和诺氟沙星等共6种抗生素作为刺激物,以甘氨酸、丙氨酸、天冬氨酸、赖氨酸、虾粉提取物和鱿鱼提取物6种诱食剂作为刺激物研究刺激物对黄河鲤饲料适口性的影响。研究结果显示,在6种抗生素中,恩诺沙星能够明显降低饲料适口性,甲砜霉素显著提高饲料适口性(P0.05),其他抗生素对饲料适口性没有显著影响。在恩诺沙星饲料中加入甘氨酸能够极显著提高饲料适口性(P0.01),丙氨酸和虾粉提取物显著提高药饵饲料的适口性(P0.05),天冬氨酸、赖氨酸和鱿鱼提取物对黄河鲤药饵的饲料适口性没有显著影响(P0.05)。     

山地夏季人工草场山羊放牧适口性研究

在福州北峰的夏季人工草场,通过划区轮牧试验对山羊的适口性进行了研究。试验结果表明,在对杂交狼尾草、甘薯、百喜草等7种牧草进行的适口性评价,甘薯对山羊的适口性最好,表现为嗜食;对杂交狼尾草表现为喜食;羽叶决明、南非马唐、俯仰马唐对山羊的适口性较差。同样,山羊对百喜草、印度豇豆等牧草的不同生育期,其适口性系数也发生变化。     

山地夏季人工草场山羊放牧适口性研究

在福州北峰的夏季人工草场,通过划区轮牧试验对山羊的适口性进行了研究.试验结果表明,在对杂交狼尾草、甘薯、百喜草等7种牧草进行的适口性评价,甘薯对山羊的适口性最好,表现为嗜食;对杂交狼尾草表现为喜食;羽叶决明、南非马唐、俯仰马唐对山羊的适口性较差.同样,山羊对百喜草、印度豇豆等牧草的不同生育期,其适口性系数也发生变化.     

改善奶牛饲料适口性技术的研究进展

饲料适口性是影响奶牛采食量、健康和生产性能的主要因素。本文针对影响奶牛饲料适口性的诸多因素分析了近几年奶牛饲料适口性提高技术的研究进展,以便为饲料生产者和奶牛养殖者在奶牛饲料生产和配制中改善其适口性提供参考依据。     

家兔饲料的适口性研究

伴随着我国规模化养兔业的兴起和商品饲料的普及,饲料适口性不佳现象逐年增多。文章介绍了动物采食调节及饲料适口性反馈途径,分析了影响家兔饲料适口性的主要因素,结合多年实践,提出适口性不佳现象的排查技巧,以及提高饲料适口性的调控对策,以供相关从业人员参考。     

动物饲料适口性与影响因素

在影响动物采食量的因素中日粮适口性(Ｐａｌａｔａｂｉｌｉｔｙ)日益受到重视,在饲料营养价值评定中已成为必须考虑的项目之一。饲料的适口性受动物及饲料因素的影响。一方面,不同的动物种类、同一种动物的不同生长阶段及生理状况,对饲料适口性的要求不同;另一方面,饲料营养的不平衡、原料替代及加工副产物的使用、饲料的不良加工与贮藏、药物及矿物质的添加等都会影响适口性而降低采食量。因此了解饲料适口性的动物生理基础、评价方法及影响因素,以期通过改善适口性来尽可能地使动物达到目标采食量,是保证动物生产水平的重要措施。1　定义…     

优良当家牧草品种的适口性测定

优良当家牧草品种对四川麻羊适口性测定的结果表明：卡松古鲁狗尾草的适口性最好，其次是宽叶雀稗。不同生育期的牧草，对山羊适口性的影响亦很大，其中，以拔节期牧草的适口性最优。     

Disease and destiny-mystery and mastery

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.     

奶牛肢蹄病及其防治

简介常见奶牛肢蹄病种类及其症状,从日粮营养、运动场地面结构、环境卫生、饲养管理、遗传育种、疾病管理等方面简析奶牛肢蹄病的病因,并提出相应的预防措施。     

Foot and mouth disease and bluetongue: differences and similarities

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.     

畜禽物种多样性及其保护和利用

文章就我国畜禽物种多样性资源的现状、保护和利用等方面进行阐述,为生态脆弱的喀斯特地区畜牧业可持续发展提供参考。     

马的咽气癖及其防制措施研究进展

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。     

德国荷兰畜禽产品质量安全交流与启示

2018年岁末,笔者有幸赴德国和荷兰,就畜产品质量安全控制及检测技术等进行了短期交流,收获颇丰,现具体介绍如下。一、交流情况德国面积35.73万平方千米,人口约8175.2万,是欧盟人口最多的国家,农业发达,机械化程度很高。德国的畜牧业以猪、牛、羊和禽类为主,畜牧业产值占农业生产总值的61%。德国虽然农业比重很小,但却是有机农业运动最早的发起国,也是目前世界上有机农产品生产与消费大国。     

广西芒果主要病虫害及其防治

广西是我国主要的芒果生产基地。随着基地建设的发展,芒果病虫害已成为目前栽培管理的主要问题。为此,在调查、研究的基础了介绍了当前芒果生产中常见的病虫害,并提出了防治措施,以期为生产上提供技术参考。     

国内外蛋氨酸与赖氨酸市场分析与展望

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。