共查询到20条相似文献，搜索用时 453 毫秒
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笔者对海南省海口、文昌、琼海、乐东、临高、东方等市（县）的火龙果(Hylocereus undatus)真菌病害进行了系统实地调研。结果表明，海南地区火龙果生产中发生的真菌病害主要有7种，分别为溃疡病、茎腐病、炭疽病、茎斑病、基腐病、黑斑病、果腐病；其中以火龙果溃疡病和茎腐病在调查的市县种植区均有发生，且危害严重。海口地区主要发生溃疡病和炭疽病，文昌地区主要发生溃疡病、基腐病和茎腐病，琼海地区主要发生茎腐病和溃疡病，临高地区主要发生溃疡病和黑斑病，东方地区主要发生溃疡病，乐东地区主要发生溃疡病和炭疽病。 相似文献
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本文主要通过人、机、料、法、环几个方面逐一研究奶牛乳房炎的病因和防控措施."人"主要是人员管理、技能培训、量化指标的追溯上进行管控."机"主要是对设备管理、性能检测、参数设置进行调整."料"主要是药浴液和奶衬的使用."法"主要是绩效管理、流程梳理以及6S点检."环"主要是牛的舒适度. 相似文献
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猪繁殖与呼吸综合征（PRRS）是由猪繁殖与呼吸综合征病毒引起的以母猪繁殖障碍和仔猪呼吸道疾病为特征的传染病。该病以繁殖障碍、呼吸困难、耳朵蓝紫并发其他传染病为主要特征。主要通过呼吸道感染,患病猪和带毒猪都是PRRS的主要传染源。该病主要侵害繁殖和呼吸系统,主要表现母猪繁殖障碍、仔猪断奶前死亡率高、育成猪的呼吸道疾病症状,严重影响养猪业的生产与发展。 相似文献
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本文主要介绍了西安市畜禽规模养殖场现状、存在的主要问题、产生问题的主要原因和规模养殖场疫病监管的建议。 相似文献
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新生羔羊的生理特点主要包括围产期羔羊的生理变化、羔羊消化系统的发育、围产期动物的营养代谢和分泌功能发生剧烈变化。消化系统的发育主要包括复胃和肠道的发育。饲养时主要应该注意初乳补喂、代乳粉的选择和饲用方法。 相似文献
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本文采用问卷调查法对云南省昆明市、大理市、丽江市等干酪消费主要地区进行了调研,从干酪消费量、消费地域分布、消费种类和方式、消费人群及供给情况5个方面对云南省干酪市场现状进行了分析.结果表明,虽然云南省干酪的消费量较小,但呈逐年上升的趋势,其中昆明地区的干酪消费量所占比例最大;西餐厅占据云南省干酪市场的主要份额,消费种类主要是制作比萨的原料一mozzarella干酪;干酪消费人群主要是久居国内或旅游的外国人员、受西方饮食文化影响或追求时尚的年轻人、儿童;国外品牌占据云南干酪市场的主要份额,主要有澳大利亚的马苏里拉和必佳、美国的多美鲜和葵花牛、法国总统和百吉福、新西兰的美兰等,而国内品牌主要来自伊利集团、蒙牛乳业及云南大理来思尔乳业有限公司. 相似文献
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正根据分娩过程的三要素,难产可分为产力性、产道性、和胎儿性三种。产力性难产主要是宫缩和努责微弱;产道性难产主要是宫颈狭窄、子宫捻转和前庭阴门狭窄;胎儿性难产主要是胎 相似文献
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In an effort to save regulatory resources, the US Environmental Protection Agency and individual states have interpreted the Clean Water Act in a manner that authorizes discharges from concentrated animal feeding operations without the review of nutrient management plans. Environmental groups have objected to the abbreviated regulatory procedures, and courts have ruled that permitting agencies must review substantive documentation of effluent limitations contained in nutrient management plans. Proposed new federal regulations prescribing the requirement of a meaningful review of appropriate documentation by the permitting agency respond to the judicial mandates. To facilitate regulatory approval, regulators might use a state certification program to achieve the obligatory meaningful review. Independent certifiers would ensure that an operation's land application of manure meets federal water quality requirements. 相似文献
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运动场草坪耐践踏性研究进展 总被引：10，自引：0，他引：10
耐践踏性是影响运动场草坪运动质量和使用寿命的关键。文章从耐践踏性的含义、主要影响因素及评价方法等方面综述了运动场草坪耐践踏性的研究进展,并对今后的研究方向进行了探讨。 相似文献
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Equine immune mediated keratopathies are common in both Europe and the USA. This review article will compare the clinical differences in horses with this disease and also review the current theories on pathogenesis and treatment of equine IMMK. 相似文献
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Potential of plant polyphenols to combat oxidative stress and inflammatory processes in farm animals 
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下载免费PDF全文 D. K. Gessner R. Ringseis K. Eder 《Journal of animal physiology and animal nutrition》2017,101(4):605-628
Polyphenols are secondary plant metabolites which have been shown to exert antioxidative and antiinflamma tory effects in cell culture, rodent and human studies. Based on the fact that conditions of oxidative stress and inflammation are highly relevant in farm animals, polyphenols are considered as promising feed additives in the nutrition of farm animals. However, in contrast to many studies existing with model animals and humans, potential antioxidative and antiinflammatory effects of polyphenols have been less investigated in farm animals so far. This review aims to give an overview about potential antioxidative and antiinflammatory effects in farm animals. The first part of the review highlights the occurrence and the consequences of oxidative stress and inflammation on animal health and performance. The second part of the review deals with bioavailability and metabolism of polyphenols in farm animals. The third and main part of the review presents an overview of the findings from studies which investigated the effects of polyphenols of various plant sources in pigs, poultry and cattle, with particular consideration of effects on the antioxidant system and inflammation. 相似文献
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M. E. Smart J. Gudmundson D. A. Christensen 《The Canadian veterinary journal. La revue veterinaire canadienne》1981,22(12):372-376
This review discusses the biological role of copper, zinc and selenium in ruminant nutrition. Soil, climate, plant and animal interactions are discussed in relationship to trace mineral availability. A review of the clinical symptoms associated with copper, zinc and selenium deficiences are also presented. 相似文献
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This article presents a history of curriculum revision. Internal and external factors prompting the initial curriculum review included the Pew Report, a vision in the college for reform, and faculty retreats focusing on curriculum. The reformed curriculum was designed around a "core plus elective" strategy and was implemented following development by faculty representatives and approval by college and university levels of review. The curriculum was reviewed after being revised and after new courses were first offered, with further review of a few courses with specific challenges. Outcomes assessment was performed and curricular adjustments made. Challenges that arose during the process included organizing and documenting content as well as communicating the content and philosophy of the new curriculum to the various affected constituencies. A summary of factors considered essential to the successful design, implementation, and review of the new curriculum is presented; the majority of these factors would be applicable to reforms at other institutions. 相似文献