略阳鸡与泰和鸡的肉质比较

<正> 我国用乌骨鸡配药治病历史悠久。当今以乌鸡为主要原料配制的中成药乌鸡白凤丸等疗效显著,享誉国内外市场。 略阳鸡多系乌皮,骨乌者较少。研究发现该鸡种体型较大(成年鸡平均体重2.62公斤),早期生长较快,与专门化肉鸡杂交效果显著,肉用潜力很大。但其药用价值如何,尚无研究资料。本研究旨在探讨略阳鸡的药用特性,为其选育和开发利用提供有益的参考。本文首先报告略阳鸡肉质分析结果。 一、材料与方法 1.试验动物 选取相同饲养条件下年龄相同的成年略阳鸡和泰和鸡测试。白羽略阳鸡、黑羽略阳鸡与泰和鸡各6只(3公,3母),     

如何鉴别低产鸡和停产鸡

合理淘汰低产鸡和停产鸡 ,是提高产蛋率、降低饲料成本、增加养鸡经济效益的最有效措施之一。鉴别低产鸡和停产鸡的最科学的方法是根据鸡的个体产蛋记录进行 ,但在大群商业性生产鸡群中是不做个体记录的 ,因此只有从鸡的外貌特征和生理变化上进行鉴别 ,其常见方法如下 :(1 )产蛋鸡眼睛明亮有神 ,鸡冠、肉髯大而红润、富弹力 ,用手触之有温暖的感觉 ,开产后鸡冠倒向一侧。低产鸡一般眼神迟钝 ,鸡冠小而萎缩 ,苍白无光泽 ,以手触之有凉的感觉。(2 )产蛋鸡的肛门宽大 ,湿润、扩张形 ;停产鸡的肛门干燥而收小 ,无弹性。(3)高产鸡腹部容积大 ,触…     

广东地方鸡种杏花鸡的家系选育

广东地方鸡种杏花鸡的家系选育肖智远林敏何道华李绍伟（广东省家禽科学研究所广州５１０４３０）前言杏花鸡是我国广东省优良的地方鸡种，为进一步提高杏花鸡的繁殖力等性能，对其进行了三个世代的家系选育。材料与方法１．试验时间、地点本试验于１９９１年１月至１９９...     

这样选择淘汰低产鸡和停产鸡

<正> 对于广大养鸡户来说,养鸡是为了赚钱。及时、准确地淘汰低产鸡和停产鸡,就能节约生产成本,减少饲料的浪费,从而提高经济效益。据了解饲养一只停产鸡的成本需要三只高产鸡的利润来维持,由此可见及时选择淘汰低产鸡和停产鸡是相当重要的,下面介绍一下选择的方法。一、根据鸡的外观选择淘汰低产鸡和停产鸡1、鸡冠正常产蛋的鸡,鸡冠大而鲜红,给人一种水灵灵的感觉;而低产鸡和停产鸡的鸡冠萎缩,显得很无力,而且鸡冠发白,像涂了层白粉一样。2、眼睛正常产蛋的鸡,眼睛大而明亮,显得很有活力;而低产鸡和停产鸡的眼睛看上去却没有活力。3、喙一般地,鸡开产一个月后,喙部的黄色色素褪去,因此,正常产蛋鸡的喙部颜色呈现白色;而停产鸡在停止产蛋后四五十天内沉着黄色色素,     

淘汰低产鸡和仔产鸡的正规方法

一、根据外观淘汰低产鸡或停产鸡 看鸡冠 高产鸡的鸡冠丰满而鲜红，冠上部往往倒向一侧；而低产鸡和停产鸡的鸡冠萎缩，而且颜色发白，呈现淡红色或暗红色，表面附有麦麸样脱落物，有痂。     

“龙凤鸡”与“882”鸡饲养对比试验

“龙凤鸡”与“８８２”鸡饲养对比试验陈礼海（海南省通什农业学校通什５７２１００）为了探索“龙凤鸡”与“８８２”鸡的生长速度与经济效益。我们于１９９５年９月１５日从海南省保亭县畜牧兽医研究所，购进该所孵化的“龙凤鸡苗”和“８８２”鸡苗各２００只。在完全...     

无奇不有的鸡

营养丰富的鸡，是世人们饲养最多的一种家禽。但有些鸡与众不同，奇特有趣，鲜为人知。     

寿光鸡杂交试验

用寿光鸡与黑乌骨鸡、斗鸡和AA鸡进行杂交试验，结果表明：①寿光鸡与黑乌骨鸡杂交，其F2代体增重介于两品种之间，跖长比寿光鸡降低17．2％；羽型多表现为扁羽，约15％为丝状羽；皮肤为白色；均为5趾。②鲁西斗鸡与寿光鸡杂交F3代与寿光鸡相比，体增重降低6．3％，料重比增加5．9％，胸宽增加5．3％。③寿光鸡与AA鸡杂交，F1代增重速度比寿光鸡本身提高85．2％，料重比降低14．3％。④白乌骨鸡比黑乌骨鸡增长快，F1代比黑乌骨鸡100日龄增重提高24％，比白乌骨鸡本身增重快9．1％。     

关于地方鸡的杂交利用

我国地方鸡种资源极为丰富,在我国南方各省、区农村广泛分布着大量的地方鸡种,这些地方鸡种是南方各省、区家禽生产的重要组成部分.地方鸡种是我国劳动人民经过长期的人工选择与自然选择而保留下来的珍贵遗产.改革开放以来,随着我国专门化商品蛋肉鸡产业的迅猛发展,使地方鸡种在我国家禽生产中的地位和作用逐步降低.地方鸡种的保种、选育与开发利用仍十分落后.     

一例鸡球虫病与鸡蛔虫病混感的诊治

鸡球虫病与鸡蛔虫病均是鸡寄生虫病.其中,鸡球虫病是一种危害极大的世界性分布的寄生性原虫病,其特征性症状和病变主要为:血便,盲肠肿大、出血,病原学检查可见虫卵;鸡蛔虫病的症状缺乏特征性,检查粪便可发现大量鸡蛔虫虫卵,或剖检可发现小肠段有大量虫体.     

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.     

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.     

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。     

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。     

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。     

牛羊焦虫病诊断与防治技术

近几年来,辽宁省牛羊饲养业迅速发展,焦虫病的危害越来越明显,已成为危害牛羊的主要疾病之一。为了提高牛羊焦虫病的防治水平,保证我省牛羊饲养业的健康发展,笔者在参阅文献和同行们诊疗经验的基础上,结合自己的治疗实践,详细阐述了我省牛羊焦虫病近几年的流行特点和诊断防治方法。     

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。