共查询到19条相似文献，搜索用时 265 毫秒
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《养禽与禽病防治》课程系列化教材建设是高职畜牧兽医专业十分重要的专业课之一。其系列化教材建设是加强学生技能培养的需要，也是借助现代化教学手段提高教学效果的需要，同时有助于学生的自主学习、终身学习。理论教材建设应以产业对人才知识的要求为模块，以知识的关键环节为重点，突出强调知识实用性；实践教材应以实践操作为核心、以生产技术岗位任务为目标进行建设。同时指出了建设电子辅助教材有利于提高教学效果。另外，对养禽与禽病防治系列教材建设中存在的问题进行了分析，提出了解决对策。 相似文献
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在西藏阿里地区畜牧业生产考察的基础上,对家畜繁育现状及存在问题进行了分析.根据繁育体系建设原则及切实可行的技术路线,提出了西藏阿里地区繁育体系建设的目标及内容,并对繁育体系的建设进行了经济效益、生态效益及社会效益分析.针对繁育体系的建设,提出了切实有效的建议. 相似文献
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《动物繁殖新技术》是农业院校普遍开设的是一门专业选修课,它是授课内容涉及多门课程的综合性课程,该课程具有内容丰富、知识更新速度快等特点,是加速畜禽繁殖、遗传改良、促进智慧畜牧业发展的重要学科。传统教学方式只注重讲述理论和灌输知识,学生课堂参与度不高,对知识理解的深度也不够。随着现代科学和信息技术的迅速发展,学生所接触到的信息也日渐丰富和多元化,因此,掌握必备的搜集整合信息能力和自主学习能力显得更为重要。本文以《动物繁殖新技术》课程为例,基于翻转课堂与《动物繁殖新技术》课程的特点,分析翻转课堂运用于教学实践的优势,对学生能力的培养与激发,以及在此模式教师面临的角色转变与挑战,为《动物繁殖新技术》课程的优化和改革提供借鉴。 相似文献
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规律性成簇间隔的短回文重复序列/CRISPR相关蛋白（clustered regularly interspaced short palindromic repeats/CRISPR-associated,CRISPR/Cas）系统是最新一代能对细胞或生物体基因组进行精准编辑的基因工程技术,与前两代基因编辑技术ZFN和TALEN相比,CRISPR/Cas具有应用成本低、适用编辑范围广、打靶效率高、操作简单、可支持多位点操作等诸多优点。近年来,CRISPR/Cas系统尤其是Type II类、A型的CRISPR/Cas9系统已经作为最新一代基因编辑技术被广泛应用于提高家畜繁殖效率、生产性能、抗病性以及动物模型构建等研究中,并创制了一批基因编辑牛羊育种新材料。本文就其发展历程、技术改造和优化最新进展以及在家畜繁殖性状、生产性状和抗病性状等方面的研究应用进行综述,重点介绍了该系统在家畜育种学研究中已取得的最新进展,并就CRISPR/Cas9基因编辑技术在家畜育种应用中现存的问题及其应用前景进行简要论述。 相似文献
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GBS育种分析系统在家畜育种学实验教学中的应用 总被引：1，自引：0，他引：1
国内外的家畜育种学发展迅速,新理论和新研究成果不断涌现,新方法和新技术在生产中发挥了越来越大的作用,因此,家畜育种学的内容也在不断丰富。河南科技大学动物科技学院在家畜育种学实验教学中普遍存在缺乏综合性实践性的实验以及实验课上学生的动手操作积极性不高的现象。针对以上问题,该研究将GBS育种分析系统在家畜育种学的实验教学中进行应用,具体应用在单性状育种值估计、多性状育种值估计、近交系数计算、选配计划等方面。通过以上实验教学改革以后,提高了学生参加家畜育种学实验课程的积极性,增长了学生的专业技能。 相似文献
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Livestock provide a wide variety of goods and services that generate income and support the livelihoods of millions of poor people in the developing world. Natural and human selections have shaped existing livestock genotypes throughout the estimated 12,000 year history since the first animal domestication. The result, in many production systems in the developing world, is a livestock genotype adapted to its environment and capable of meeting the needs of smallholder farmers. However, this adaptation is unlikely to be optimal and the rapid changes currently affecting the livestock sector, including policy and market changes, movements of germplasm frequently involving the importation of exotic breeds, and the increasing impacts of climate change are affecting the livestock genotype-environment optimum. This is challenging livestock production systems of smallholder farmers. Current challenges include: high rates of loss of the diversity in livestock populations, rapid transformation in smallholder production systems requiring significant changes in genotypes and their management; increased demand for quality and safe foods; increased market competition in a globalizing economy; increased need for complex partnership arrangements in the ever-changing livestock commodity chain; and lack of adaptive capacity to respond to the rapid system changes. Underlying all these is the general lack of strategies for genetic improvement of livestock in smallholder systems and poor livestock infrastructure in developing countries. Opportunities include increased demand for livestock products — and hence potential market opportunities, and new technologies with potential to leap-frog breeding progress in developing countries. This paper analyses options for pro-poor livestock improvement in developing countries, with particular emphasis on the potential role that science – both old and new – will have, from understanding the social underpinnings to innovative technical solutions. It concludes that one of the highest priority interventions for the smallholder systems is the development of innovative approaches for the strategic use of appropriate genotypes from the available range of global breed resources. The analysis strongly suggests that the highest priority ‘breeding intervention’ should be the provision of appropriate genotypes in a sustainable manner, underpinned by a good understanding of what breed resources exist that have demonstrated potential, where else they could be used, and how they would be delivered to smallholders. Efforts to improve/refine breeding skills of smallholders should proceed in parallel. Institutional arrangements and enabling policies are critical for the success in identifying and applying appropriate genetic technologies, improving access to input services and facilitating access to markets in order to translate productivity gains into incomes. 相似文献
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草类植物育种学是草业科学专业的专业必修课。分析了该课程教学中存在的教材滞后、课时数偏少、教学方法、手段滞后等问题，针对这些问题，对教学改革提出了几点建议：加强教材建设、教学内容上应该强化生物技术在育种中的应用、尝试双语教学、充分利用多媒体多元化功能进行教学、改革课程考核体系等。 相似文献