安徽省两栖爬行动物物种分布特征

基于现有的安徽省两栖爬行动物分布资料,系统整理物种分布数据,建立两栖爬行动物地理分布原始数据库。运用GIS技术,以县级行政区为地理单元,分析物种丰富度格局,通过多元统计分析,研究物种多样性的区域分异。结果表明,皖南山地丘陵和大别山山地丘陵地带物种丰富度最高：淮北平原、江淮丘陵的物种丰富度相对较低;但淮北平原和江淮丘陵的部分山地丘陵物种丰富度相对较高。根据各县的分布型物种数量分布,当聚为2组（Jaccard系数大于7.612）时,安徽省物种分布型区域分异基本上呈现山区系组（皖南山区和大别山区）和丘陵平原组特征,当聚为3组（Jaccard系数小于5.075）时,丘陵平原组又可分为江淮丘陵平原组和淮北平原组;当划分为4组（Jaccard系数等于2.537）,山地区系组又可以分为皖南山区组和大别山区组。     

两栖爬行动物的异地保护

中国是世界上动植物种类最丰富的国家之一，但国内对野生两栖爬行动物的掠夺性利用还在发展；国内野生两栖爬行动物资源在这种疯狂的掠夺下已经接近枯竭，多数物种处于濒危状态。动物园作为野生动物异地保护的重要场所，饲养繁殖野生动物的最终目的是实现濒危物种的再引入，恢复野外种群数量．出于以上目的，动物园中两栖爬行动物的饲养管理方式有别于爬虫爱好者单纯的满足对宠物的要求和增殖牟利追求。这种区别不仅表现在选择动物种类方面，更多的体现在丰容概念的引入及工作方法的应用：营造合理的饲养环境、饲养环境小气候的周期性变化、设施的丰容、群体的调整、食物及供给方式的变化、对繁殖行为的鼓励等。这些丰容手段对保持两栖爬行动物的自然行为，从而保证动物的野外生存能力具有重要作用．     

秦皇岛市药用两栖、爬行动物资源调查研究

1996-2003年,采用调查研究以及参考有关文献资料的方法,对秦皇岛市药用两栖、爬行动物进行调查研究。结果表明.该市内共计分布药用两栖、爬行动物4目、8科、15种,并对其分类学地位、生态概况、药用价值等做了介绍。     

Factors affecting the prevalence of foot pad dermatitis, hock burn and breast burn in broiler chicken

1. Standardised data on flock husbandry were recorded on 149 broiler farms during the 4 d prior to slaughter. 2. Birds were examined at the slaughterhouse for contact dermatitis lesions. Foot pad dermatitis score (FPDS) and hock burn score (HBS) were measured on five point scales. Carcase rejection data were also collected. 3. The mean percentage of birds in each flock with: moderate or severe foot lesions was 11.1% (range 0-71.5%); moderate or severe hock burn was 1.3% (range 0-33.3%); and, breast burn was 0.02%. 4. A general linear model was developed to examine factors associated with mean flock FPDS. Assuming a linear relationship, within the range of data collected and with all other factors remaining the same, every 1% increase in the proportion of Genotype A birds in the flock was associated with an increase in mean FPDS of 0.003, every one-point increase in litter score was associated with a 0.326 increase in mean FPDS and every one-point increase in flock mean HBS was associated with a 0.411 increase in mean FPDS. Flock mean FPDS was associated with feed supplier and was higher in winter. 5. The general linear model developed for flock mean HBS, found that every one-point increase in mean FPDS increased mean HBS by 0.090, every one-point increase in litter score increased HBS by 0.119 and, every 1% increase in small/emaciated birds decreased mean HBS by 0.333. Reduced HBS was also associated with increased final litter depth, younger slaughter age and an increased percentage of dietary wheat. For every 1% increase in Genotype A birds, a decrease in flock mean HBS of 0.003 would be expected. 6. An effect of hatchery was also identified.     

两栖动物肝簇虫、锥虫的研究进展

肝簇虫和锥虫是通过昆虫媒介传播的两栖动物极易感染的两种血液寄生虫,且混合感染率极高,可导致两栖类种群数量下降,甚至灭绝。肝簇虫和锥虫分布范围广泛,脊椎动物多为易感动物,感染动物机体后,依靠吸收血液中的营养物质大量繁殖,释放大量毒素破坏红细胞和免疫系统,增加机体对其他传染性疾病的感染机率。另外肝簇虫和锥虫的传播媒介广泛存在于自然界,因此在给两栖动物带来严重危害的同时,也具有传播给人类的风险。本文针对两栖动物肝簇虫和锥虫形态特征、生活史、易感动物和地理分布、及其危害进行概述,以期唤起同行研究人员的重视,为血液寄生虫的相关研究提供参考。     

《畜牧经济学》课程改革的思考与实践

根据《畜牧经济学》的课程特点、畜牧产业发展的趋势以及学生的学习状况,并结合教学经验,提出了《畜牧经济学》课程改革的理论思考,制定了相应的改革方案。经实践验证,该改革设想和方案是可行的,其效果良好。     

出口活虾的检验检疫与运输保存技术

本文阐述了出口活虾的临床检验检疫和对养殖场及其暂养场地管理工作的重点，同时介绍活虾运输保存、活虾捕捞、暂养、包装前的预处理、包装、运输后的恢复等关键性技术。     

法律法规修订背景下的规模化猪场引种实务

非洲猪瘟传入我国以来,单纯考虑疫情肆虐现实而漠视引种需求的官僚做法,和单纯考虑引种需求而漠视疫情肆虐现实的盲动做法,斗争颇为激烈之际,《中华人民共和国动物防疫法》《动物检疫管理办法》《中华人民共和国畜牧法》陆续修订,并分别自2021年5月1日、2022年12月1日、2023年3月1日起施行。在此背景下的规模化猪场引种该咋办？根据疫情防控经验和历史上的引种教训,笔者在技术推广过程中曾经形成了一套兼顾供需双方动物防疫要求、保障种猪引进质量的方法。现依照法律法规的修订进行了修改完善。修改完善后的规模化猪场引种实务要求科学制定引种方案、提前备妥隔离条件、引种团队现场核验给力、三管齐下保种猪个体质量、无损运输的措施全面到位、落地后依法报告和隔离。     

Clinical Update on Diagnosis and Management of Disorders of the Digestive System of Reptiles

The diagnosis and treatment of digestive system disorders in reptile species continues to provide challenges owing to the differences in anatomy and physiology in this diverse group of animals. Continued research efforts into diagnostic techniques, in particular imaging (e.g., contrast radiography and ultrasonography), of gastrointestinal tract have resulted in clinical advancements for practicing veterinarians. The aim of this article is to provide veterinarians up-to-date and clinically relevant summaries on the diagnosis and therapy of digestive system disorders of reptiles commonly maintained as companion animals.