亚丁牦牛繁殖性能调查

[目的]为了了解亚丁牦牛品种的繁殖性能,更加深入了解其资源特性,为后续制定选育标准和提高繁殖存活率提供理论依据。[方法]调查了亚丁牦牛主产区养殖亚丁牦牛的2016—2018年存栏情况,统计亚丁牦牛繁殖存活率。[结果]结果显示亚丁牦牛繁殖存活率达到61.78%,表明亚丁牦牛具有繁殖性能高的特点。     

母牛繁殖疾病及其治疗分析

随着社会的不断发展,当前养牛的方式已经由传统的散养式养殖转变为规范化的圈养.但在牛养殖过程中,经常还是会引发各种疾病,造成严重的经济损失.本文深入分析了母牛繁殖期间可能引起的各种疾病类型,并提出了有效的防治建议,希望能为相关养殖户提供有价值的参考,从而降低母牛繁殖疾病的概率,促进养殖业的发展.     

治疗母牛繁殖疾病提高养牛经济效益

到１９９９年．绥化市可繁母牛达４７．６万头，其中黄牛可繁母达 ３６万头．奶牛 １１． ６万头，年产牛犊 ２１．４万头，可繁母牛繁殖率平均 ４４． ９％、两年不足一个犊。影响了养牛业的发展。通过对全市所辖１０个县、市（区）的抽样调查分析．母牛繁殖率低的主要原因之一是繁殖疾病造成的．占可繁母牛的２１． ８％．每年平均有１０． ３７万头可繁母牛国繁殖疾病不产犊．造成养牛经济效益下降。所以．积极防治母牛繁殖疾病是提高养牛经济效益的重要手段。经过近３年对全市多点、多牛进行观察、分析和总结．母牛繁殖疾病主要有三种。…     

皖北地区蜂群春繁防衰的措施

近几年来,皖北地区的刺槐、泡桐等蜜源植物减少,油菜成了春季的主要蜜源。许多蜂友,为夺取油菜花期的蜜浆丰收,提前春繁,但有些蜂友,没有全面地掌握春繁的技术,蜂群春衰,致使油菜花期歉收或绝收。针对春衰的原因,本人谈谈春繁防衰的综合措施,供参考。一、强群越...     

试论母牛繁殖疾病及其治疗

在母牛繁殖期间,其机体抵抗力比较差,很容易遭受各种繁殖疾病的侵袭,给母牛的生命健康造成威胁,进而给养殖户造成严重的经济损失。本文就如何治疗母牛繁殖疾病进行了详细的分析,以供参考。     

母牛繁殖疾病的种类及治疗方法分析

伴随着我国社会经济的发展,畜牧业也迎来了发展的新形式.在整体的社会环境下,人们的物质生活和物质需求开始提高,对畜牧养殖业也有了新的要求.基于此,养牛产业逐渐受到重视,并成为了改善牧区人民生活,满足现阶段人民物质生活需要的关键产业之一.但是,在养牛的过程中,由于疾病的出现,使得牛体容易出现一系列的健康问题,尤其是在繁殖期...     

皖北地区鹅副粘病毒病门诊调查与分析

笔者对安徽科技学院动物科学学院门诊2013年全年接诊鹅副粘病毒病的情况进行了统计,介绍了该病的临床症状、病理解剖变化、临床诊断和防治措施。     

母牛繁殖疾病及其治疗

文章在分析母牛繁殖期间可能引起的各种疾病类型的基础上对如何治疗和预防提出了若干建议,希望能够降低母牛繁殖疾病的概率,促进母牛繁殖和养殖业的发展.     

母牛繁殖疾病的种类及治疗方法

处于繁殖期的母牛是非常脆弱的,非常容易受到各种繁殖疾病的侵袭,促使母牛身体机能下降,无法更好的孕育幼牛,给母牛和幼牛的生命带来一定的威胁,相应的会给养殖户带来严重的经济损失。为此,积极有效的治疗母牛繁殖疾病是非常必要的,其能够抵抗疾病给母牛带来的生命威胁,促进养殖户经济效益的提高。本文就如何治疗母牛繁殖疾病来提高养牛经济效益这一问题进行详细的分析和探讨。     

应用生殖激素治疗母牛繁殖疾病

应用生殖激素治疗母牛持久性黄体、卵巢囊肿、卵巢静止等繁殖障碍性疾病,可取得了比较满意的治疗效果。1持久性黄体是指母牛性周期后卵巢上黄体超过20～30 d不消退。病因为孕酮分泌过高,抑制卵泡发育而使母牛不发情。主要表现为:性周期停止,外阴紧缩,阴蒂、阴道、阴唇黏膜苍白干燥。直肠检查:卵巢质地稍硬,黄体不规则,不饱满。有时于同侧或对侧卵巢出现一个或数个绿豆大或黄豆大小的,处于静止或萎缩状态的发育卵泡。子宫松软下垂,子宫角不对称,触之无收缩反应。治疗:用氯前列烯醇一次肌肉注射0.4 mg,3 d左右即可出现发情表现。若气温低于10 …     

Effects of Diseases on Reproductive Performance in Dairy Cattle Ⅱ: Reproductive Diseases

With the rapid development of dairy breeding and the scale feeding level,the average individual milk yield of dairy herds in China has been greatly improved over the last few decades.However,the reproductive performance of dairy cows,especially in high-producing dairy cows,has declined continuously and affected severely dairy farm profitability.Reproductive performance of dairy cows was influenced by many factors including environment,herd management,genetics and various diseases.It has become more evident that genital tract diseases(also known as reproductive diseases) decreased reproductive performance of dairy cows during the last 10 years.The effect of reproductive diseases on reproduction of dairy cows has received more attention.This paper briefly described the incidence of reproductive diseases such as metritis,various types of endometritis and retained fetal membrane and ovarian diseases such as ovarian cyst,persistent corpus luteum in China and abroad.This paper highlighted the effects of reproductive diseases on reproductive performance such as days open,calving interval,pregnancy rate,estrus detection,days to first breeding and breeding index.Moreover,we analyzed in more detail the possible mechanisms by disrupting endocrine signaling,damaging intrauterine environment and causing ovarian dysregulation.Lastly,we looked forward to the future research direction of reproductive diseases of dairy cows that provided data reference and theoretical support for improving the management measures of scale feeding,reducing the incidence of reproductive diseases,improving the production and reproductive capacity of dairy herds in China.     

4种猪繁殖障碍性疫病流行病学调研与分析

猪繁殖障碍性疫病严重危害养猪业的发展,为了查清山西省这些疫病的流行情况,对全省8个地市42个规模化种猪场进行了流行病学调查,发现因母猪繁殖障碍病造成死亡的仔猪数平均可以占到总产仔数的13.77%,同时采集病料组织257份,不同日龄猪群血清1776份,用不同病原的PCR和ELISA试剂盒对猪瘟、猪繁殖与呼吸综合征、猪伪狂犬病和猪圆环病毒2型等进行了病原和抗体检测,结果表明,猪瘟病毒感染率为28.4%,抗体阳性率为57.55%;猪繁殖与呼吸综合征感染率为3.89%;猪繁殖与呼吸综合征变异株感染率为39.69%,抗体阳性率为44.99%;猪伪狂犬病病毒感染率为10.12%;gE抗体阳性率为2.98%,gB抗体阳性率为76.35%;猪圆环病毒2型感染率为15.18%,抗体阳性率为56.98%,证明山西省种猪场4种疫病感染较为严重,并且常常发生混合感染,为今后山西省防控这些疫病提供了依据。     

浅析安徽地区大别山牛饲养管理技术

大别山牛是安徽省优良地方种质资源之一,主要分布于大别山区,具有适应性好、耐粗饲、抗病力强、体型小和易管理的优点。本文就大别山牛犊牛、育成母牛、妊娠母牛、哺乳母牛和育肥牛的日常饲养管理进行了阐述,以期为大别山牛养殖提供参考。     

奶牛常见繁殖疾病诊断与治疗

中国乳制品消费水平位于全球前三,奶牛养殖业在国内具有很大的发展潜力。随着奶牛养殖业的发展和扩大,繁殖疾病成为影响奶牛场经济效益的因素之一。繁殖疾病的发生和很多因素有关,包括营养、卫生等方面,体内激素不平衡也会诱发繁殖疾病的发生。本文对引起奶牛繁殖疾病的主要发病原因、临床症状、病理变化、临床诊断及治疗方法进行归纳总结,以期为繁殖疾病的诊断治疗提供理论基础。     

张掖市百万头肉牛基地母牛不孕症发病情况调查

通过对张掖市百万头肉牛基地母牛不孕症发病情况和发病原因开展调查,初步查明母牛不孕症发病率达16．5％,其不孕原因主要有4个方面：饲养管理不当性不孕,先天性不孕,生殖系统疾病性不孕,人工授精技术失误引起的不孕。并对这四种不孕症发生原因进行了分析,对内牛不孕症的有效防治提供了重要依据。     

临泽县肉牛传染病和寄生虫病普查报告

为掌握临泽县肉牛传染病和寄生虫流行情况,临泽县动物疫病预防控制中心对全全县肉牛传染病和寄生虫病的感染情况进行了摸底普查.通过详细普查,掌握了全县肉牛传染病和寄生虫病发生显著,为有效防控提供了重要理论依据.     

Effects of Diseases on Reproductive Performance in Dairy Cattle Ⅲ: Nutritional Metabolic Diseases

Under the modern large-scale and intensive dairy farming production mode,the continuous supply of feed with high nutrition level is the material basis for maintaining the rapid growth and development of reserve cows and the high lactation performance of lactating cows.However,after the genetic quality reaches the "bottleneck period",although the milk yield of dairy cow can continue to maintain a certain high level with the continuous improvement of the nutrient concentration of feed and the increase of dry matter intake (DMI),the incidence of nutritional metabolic diseases of high-yield dairy cows also shows a rapid growth trend,especially ketosis caused by the negative energy balance in perinatal period,acidosis caused by high-precision diet and the increase of blood urea nitrogen caused by high-protein diet,negatively regulate the reproductive performance of dairy cows,resulting in inconspicuous postpartum estrus,decreased mating rate and conception rate of dairy cows,which directly affect the update speed of dairy cows production groups,the normal performance of high-quality cattle and the economic benefits of dairy farming.In this paper,the author introduced in detail the relevant research on the current situation and its mechanism influence of different nutritional metabolic diseases on the reproductive performance of dairy cows in recent years,and focused on analyzing the molecular mechanism of nutritional and metabolic diseases with high perinatal incidence such as ketosis,low blood calcium and moderate gastric acid,and put forward the prospect and thinking on the future research direction of nutritional and metabolic diseases and reproductive performance of high-yielding dairy cows,in order to provide some reference and theoretical basis for improving the reproductive efficiency of high-yielding dairy cows in large-scale pastures in China and the perinatal nutrition management level of dairy cows.     

季节与奶牛疾病关系的探讨

本文根据膛师院附属兽医院（１９８３－１９９３）临床病例资料的和安微省部分奶牛场的调查资料，试就季节对奶牛乳房炎，支气管炎及支气管肺炎，奶牛流行热，传染性角膜炎。结果炎和奶牛焦虫病的影响进行分析探讨，以利减少和预防奶牛疾病。     

山东省肉牛主要疫病的检测

对山东省肉牛饲养比较集中的８个县（市）部分马牛场及其周边区域肉“牛群的疫现部分老的疫病已不存在,但占疫病的种类数量仍在逐渐增多,且复杂多样。提醒人们在肉牛规模化养殖中防制疫病的任务还相当艰巨。