论加快青海生态环境治理和草业可持续发展

分析了青海生态环境现状及生态环境失调的主要原因,有针对性地指出了在经济发展中忽视生态环境治理和在生态环境治理上实行重林轻草违背自然规律的失误,强调了草业在生态环境治理中的效益,并从六个方面提出了草业在社会经济发展中的地位和作用。     

论加快青海生态环境治理和草业可持续发展

分析了青海生态环境现状及生态环境失调的主要原因,有针对性地指出了在经济发展中忽视生态环境治理和在生态环境治理上实行重林轻草违背自然规律的失误,强调了草业在生态环境治理中的效益,并从六个方面提出了草业在社会经济发展中的地位和作用.     

草业是青海经济开发与生态环境治理的基础

分析了青海经济开发与生态环境失调产生的问题及生态环境失调的主要原因，指出在经济发展中忽视生态环境治理和在生态环境治理上实行重林轻草违背自然规律的失误，草业是青海经济开发与生态环境治理的基础。     

浅析大学生生态环境治理参与机制

当代中国大学生参与生态环境治理有其一定的现实意义。大学生具有情感优势、资源优势、科学文化优势和地域优势,但在参与中还存在法律法规与政策规章支撑不足、社会认同与支持缺乏、高校生态环境教育开展困难和大学生生态意识与治理行动存在矛盾等困境。故此,在加强生态环境治理法制建设的同时,还需加强大学生同其他治理主体的合作,加强大学生生态环境教育以及大学生自身建设。提高大学生生态环境治理的能力和水平,推动生态环境治理工作进程,是建设生态文明社会的重要保证。     

青海省三江源区草地生态环境现状及治理对策

阐述了青海三江源区草地生态环境现状,分析了草地生态环境恶化的原因,提出了治理草地生态环境的对策.     

青海省生态环境治理面临的问题与草业科学的发展

青海省生态环境恶化的主要特征是草地退化,水土流失,土地沙化,冰川湿地退缩,自然灾害频繁,人畜饮水困难,农村能源短缺.当前生态环境治理面临着试验示范不够、缺少治理规划、种苗供应混乱、资金投入不够等问题,需要加强治理规划工作和技术支撑体系、建立生态环境治理责任制、紧密结合生产结构调整及草产业的发展等方面开展工作.需要依据草业科学的原理,在生态环境治理中重视生态工程设计的应用,对治理区按照草地农业系统四个生产层次统筹考虑优化生产结构,发挥各系统和层次间的耦合效应.生态环境治理面临的问题为草业科学原理的实践及发展提供了广阔的天地.     

乡村振兴背景下饲料企业对农村生态环境治理的支持

自乡村振兴战略提出以来,关于生态建设、经济发展、“三农”问题及城乡差异等内容成为研究重点。农村生态环境治理是乡村振兴的重要组成部分,农村生态环境治理效果直接关系农村居民的生活幸福感和健康水平,关系到美丽乡村建设水平,影响乡村振兴的效果。但在长期存在的城乡二元结构关系下,农村生态环境治理与城市还有较大差距,提升乡村生态环境治理水平迫在眉睫。国内外学者提出,生态环境治理不应只依靠政府的力量,还需要企业、高校、群众等社会各界共同参与。因此,本文以饲料企业为研究对象,通过论述乡村振兴背景下农村生态环境治理的积极意义,并归纳总结出当前饲料企业在支持农村生态环境治理存在的典型问题,最后提出支持对策,如提升企业生态环保意识、加强绿色资金支持、提升技术水平和成果转化效率等建议,为我国饲料企业参与农村生态环境治理提供参考,促进乡村振兴战略的加速实现。 [关键词]乡村振兴|饲料企业|农村|生态环境|治理     

环青海湖地区草地生态环境现状及治理对策

环青海湖地区在青藏高原生态系统中占有极其重要的生态地位,保护和治理好区内生态环境,其社会及生态意义重大.本文在深入调查研究的基础上阐述了环青海湖地区的生态环境现状,分析了生态环境恶化的成因,因地制宜地提出了生态建设的思路及治理对策.     

环青海湖地区草地生态环境现状及治理对策

环青海湖地区在青藏高原生态系统中占有极其重要的生态地位,保护和治理好区内生态环境,其社会及生态意义重大。本文在深入调查研究的基础上阐述了环青海湖地区的生态环境现状,分析了生态环境恶化的成因,因地制宜地提出了生态建设的思路及治理对策。     

浅谈互助县草地生态环境治理

互助县地处青海东部农区,复杂的地理环境和草山管理权限的不明晰,使草地生态治理存在诸多问题,文章就互助县草地生态环境现状进行了分析,提出了草地生态环境治理意见及建议。     

PREGNANCY IN SLAUGHTERED COWS IN NORTH-EASTERN AUSTRALIA

A total of 7495 postpuberal beef cows from herds in north Queensland and the Northern Territory were examined at abattoirs to define the extent of wastage due to the slaughter of pregnant cows. On the basis of examination of teeth most cows (57%) were considered mature (approximately 3.5 to 7 years) at slaughter; 14% were young (9 months to 3.5 years) and 29% were old (over 7 years). In herds where pregnancy diagnosis by rectal examination had not been used at time of culling, 71.6% of slaughtered cows were pregnant and 42% of these cows were in the second trimester. This high pregnancy rate was considered an important source of herd wastage. Pregnancy rate varied little with season, but the highest percentages of cows pregnant in the first and third trimesters were recorded in autumn and spring, respectively. Most cows found non-pregnant had active ovaries at time of slaughter. Anoestrus was observed to be most common in winter and in old cows. Lactational status was not recorded. Mean cold carcase weight of 4229 cows was 161 +/- 40 kg. Maximum carcase weight was observed in cows slaughtered at 4 to 6 years of age; old cows had the lowest carcase weight (147 +/- 31 kg) of the age groups considered. Highest (170 +/- 43 kg) and lowest (135 +/- 41 kg) carcase weights in relation to pregnancy or ovarian status were observed in non-pregnant/ovary-active and non-pregnant/anoestrus cows respectively. Carcase weight of cows in the third trimester (165 +/- 35 kg) was greater than in the second (161 +/- 35 kg) or first (157 +/- 36 kg) trimesters; difference between the first and third trimesters was significant (P less than 0.01).     

化隆县农田种草及建议

农田种草既有较好的经济效益，又具有一定的生态保护和恢复功能。就山大沟深，天然草地植被稀疏，耕地资源较丰富的化隆县而言，发展农田种草，其生态、经济、社会效益十分明显，发展潜力巨大。前景广阔。     

天峻县2009年游牧民定居工程建设调查

天峻县2009年游牧民定居工程,在3镇7乡的无房户或危房户中实施,建设分县城集中、乡镇所在地集中、村社适当集中三种定居建设模式。截至到年底共完成1036户,建设总面积6.94×104m2。     

湖南省部分地区商品鸡异刺线虫感染情况调查

为了了解湖南省商品鸡异刺线虫感染情况,2007年2月～9月,笔者应用寄生虫学完全剖检法,对湖南省长沙、湘潭、永州、常德和娄底五个地区的275羽商品鸡,进行了鸡异刺线虫的感染情况调查。结果显示,商品鸡总体感染率为42．2％（116／275）,平均感染强度为10．4。丘陵区鸡异刺线虫的感染率最高,感染率介于70％-100％之间;湖区和市区的感染率依次居后,分别只有36．4％和32．3％。     

RABBIT HEMORRHAGIC DISEASE VIRUSES DETECTED IN PET RABBITS IN A COMMERCIAL LABORATORY IN EUROPE

Rabbit hemorrhagic disease (RHD) is an important cause of disease and mortality in wild and domestic European rabbits (Oryctolagus cuniculus) throughout the world. Testing for 2 distinct RHD virus types (RHDV/RHDVa and RHDV2) was carried out on samples collected from 684 rabbits submitted from veterinary practices and private owners throughout Europe between January 2015 and June 2017. Four (0.6%) were positive for RHDV/RHDVa and 257 (37.4%) were positive for RHDV2. RHDV/RHDVa was detected in individual samples from Germany and the Netherlands, while RHDV2 was found in animals from Germany, Great Britain, Luxembourg, The Netherlands, Spain, Switzerland, Poland, Belgium, Austria, Sweden, and Finland.     

青海高寒牧区畜棚育肥牦牛增重试验

通过对高寒地区畜棚育肥牦牛试验,得出牦牛在完全舍饲下日增重比在半舍饲下高76g,差异极为显著(P0.01),半舍饲比完全放牧日增重高105g,差异极为显著(P0.01)。     

ULTRASONOGRAPHIC FINDINGS IN CANINE GASTRIC NEOPLASIA IN 13 PATIENTS

The ultrasonographic findings in 13 canine patients with histopathologically proven gastric tumors were reviewed. The echogenicity of gastric wall lesions was variable and independent of the type of tumor. All dogs had an increase in gastric wall thickness and in only one dog was the wall layering intact. Regional lymph node involvement was a common finding, but abnormalities within the liver were seen in only one patient. Gastric neoplasia was observed most commonly in middle-aged and old, medium- to large-sized dogs. Carcinoma was the most common tumor found. In this study, with a limited number of animals and limited tumor types, it appeared that thickening of the gastric wall, accompanied by loss of gastric wall layering and enlargement of regional lymph nodes were ultrasonographic signs likely to be found with gastric neoplasia. In this limited study the histologic type of gastric tumor could not be predicted on the basis of the ultrasound examination.     

在甘肃农业进程中草业发展的趋势

近40多年来甘肃的农业基本上在循着”以粮为纲”的模式发展着,但是,这是一种极不完善且效益低下的模式。根据甘肃农业的具体条件,应当充分发挥草地资源优势,大力发展草业产业。文章最后提出了以草业促牧业,以牧业促农业,使农业得以综合发展的建议。     

柴达木盆地幼年家畜舍饲育肥试验研究

利用柴达木盆地地产饲草料进行日粮配方，全舍饲育肥牛羊幼畜取得了较好效果，日增重：犊牛为445．90g、半细毛羔羊为89．76g、藏系羔羊为85．46g；畜均纯收入：犊牛为317．82元，半细毛羔羊处理Ⅰ为31．11元、处理Ⅱ为50．26元，藏系羔羊处理Ⅰ为30．75元、处理Ⅱ为38．47元。     

甘肃省马气喘病研究—家兔和豚鼠的农民肺模型

用从甘肃省马气喘病自然病例肺中分得的5株放线菌和5株霉菌,对34只家兔和23只豚鼠进行了实检性农民肺研究。通过吸入与气管内注入上述菌粉,在这些动物中首次成功地复制出农民肺模型。染菌动物的症状与病变同在气喘病马所看到的很相似。尸检时见肺膨大、气肿,还有密散的结节。镜检动物的肺组织,观察到单核巨噬细胞性肺泡炎、间质性肺炎、支气管周炎与上皮样-巨细胞肉芽肿形成,但豚鼠比家兔的淋巴网状组织增生更明显。结果表明,所分得的霉菌和放线菌包括热吸水链霉菌参与了甘肃马农民肺的病理发生。