新时代下科教相结合的教学改革初探

建设创新型国家是我国未来发展的必然选择。作为国家创新体系中的重要一员,高校必须认真分析发展过程中存在的问题,在教学体系等一系列教学工作方面制定有效的改革措施,以适应形势的变化。高校在教学改革中要将理论教学与科学研究合理有效地结合起来,培养具有创新思维和创新技术的科技应用型人才。文章从课程建设、教学方法改革和科教体制改革三方面进行阐述与探讨,旨在为今后高校教育的质量提高提供指导和参考。

一例导致蛋鸡肝脏肿大病原的分离与鉴定

为查明在某养鸡场的散养鸡群中,出现小部分产蛋鸡不产蛋、消瘦、肝脏肿大的原因,利用染病鸡的病料进行细菌抹片镜检、分离、培养,细菌微量生化反应管鉴定法对分离菌株进行生化鉴定,利用PCR法进行分子生物学鉴定,利用K-B药敏纸片法进行药物敏感性试验。结果显示,致病菌为金黄色葡萄球菌。药敏试验表明,在35种药物中,所分离的金黄色葡萄球菌对红霉素、青霉素G、庆大霉素、万古霉素、克拉霉素、头孢噻吩、头孢唑啉、克林霉素敏感。

“兽医毒理学”课程教学改革探索与实践

“兽医毒理学”是动物医学专业学生的一门专业基础课,理论性、实践性、应用性均较强。但因其专业性强、部分知识点冗杂难懂,学生学习的兴趣不高,且传统的课堂教学方式较为单调,弱化了学生的主体地位,也限制了学生学习的时间和空间,加之缺少实践教学环节,学生学习的积极性和参与度不高,影响了教学效果。针对“兽医毒理学”课程当前教学过程中的痛点问题,从明确学习目标、修订教学大纲、精简教学内容、挖掘思政元素、改变教学模式、优化考核方式等几个方面探讨“兽医毒理学”教学改革与实践,以提高课程教学效果。

Construction and Expression of Recombinant Ghrelin Plasmid and Effects on Growth Performance and Gastric Acid Secretion of Rats

The paper was to study construction and expression of rGhrelin （pcDNA3 -Ghrelin） and its effect on growth performance and gastric acid secretion of rats. Ghrelin amplified from gastric mucosa of weaned piglets was cloned into the expression vector pcDNA3 to get recombinant plasmid pcDNA3 - Ghrelin. Twelve weaning rats were randomly divided into two groups, six rats each group. The rats in each treatment group were individually injected with 100pg of naked plasmid pcDNA3 -Ghrelin, and the rats in control group were injected with empty plasmid. The weights and feed consumption of rats were measured after injection for 7, 14 and 29 d, respectively. The rats were sacrificed at the end of the experiment, and their stomach was separated and weighed, the pH value of gastric juice was measured as well. The results showed that the average daily gain of rats at 7 and 29 d were significantly higher than that in control group, respectively （P〈0.05）, and feed consumption did not have significant chan- ges; the feed meat ratio of rats in the treatment groups was significantly lower than that in control group （ P 〈0.05） ; the gastric relative weight and gastric weight did not change significantly, while the pH value of gastric juice of rats in treatment groups was significantly lower than that in control group （P 〈 0.05）. This indicated that after transfected expression of muscle tissue, ghrelin played an important regulatory role in growth and gastric acid secretion of rats.

薄壁活门衬套窄槽加工工艺方法研究

活门衬套零件结构复杂,具有极高的圆柱度、粗糙度要求,壁薄且径向开有窗口和窄槽。其中窄槽结构由于宽度极小,且壁厚极薄,加工变形、裂纹、掉块现象经常发生,具有很高的加工难度,本文介绍了几种常用的窄槽加工方法,重点对线切割加工此类窄槽的工艺流程安排、不同材料热处理状态下的注意事项及加工技巧、工装夹具等做了详细介绍,解决了此类薄壁窄槽的加工难题。

“智慧实验室”在《动物解剖学》教学改革中的应用初探

动物解剖学是动物医学专业的必修课程,包括理论和实践内容,课程知识点繁多、冗杂。如何提高学生的学习效率是本门课程重要的改革内容。“智慧实验室”是基于现代网络技术发展而来,通过创建智慧平台,改善动物解剖学实验的教学环境,提高教学质量,在动物医学实验教学中具有广阔的应用前景。