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论文立足于生产实践,从技术及服务两方面分析我国猪人工授精存在的问题,就猪人工授精的重要性、人工授精站建设和人工授精技术操作规范以及目前猪人工授精上门服务存在的隐患进行了综述,以期为猪人工授精技术的规范和推广提供借鉴. 相似文献
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《国外畜牧学(猪与禽)》2010,(4)
<正>本丛书是由中国农业大学出版社正式出版,为正16开,制作精美,图文并茂,是专家、企业多年的经验总结,是一套实用性、可操作性很强的工具书。全套定价150元(包括:猪人工授精技术实务、猪人工授精技术实践问题解答、猪人工授精研究进展、猪人工授精技术精品课程、猪人工授精行业规范与细节性管理5本书,并 相似文献
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1当前农村猪人工授精技术现状和存在的问题1.1人工技术推广面减少,用种公猪本交的现象有所增加。1.2"地下人工授精点"操作不规范,精液品质不稳 相似文献
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<正>精液保存的目的是延长精子的存活时间而不丧失受精能力。20世纪70年代,猪人工授精使用自配稀释粉保存常温精液,造成保存时间的不稳定性,加之人工授精技术不规范,使猪人工授精技术逐渐萧 相似文献
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猪人工授精站点存在的主要问题及对策 总被引:1,自引:1,他引:0
本文阐述了猪人工授精技术推广应用中存在的主要问题,提出了猪人工授精站点应采取的对策,以期为在生猪生产中推广和应用人工授精技术提供一定的参考。 相似文献
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<正>猪人工授精受胎率的高低受环境、饲养管理、精液品质、母猪发情鉴定、疾病和人工授精技术等多因素的影响。我镇开展猪人工授精工作多年,全镇有四个猪人工授精供精站,负责1.5万头可繁母猪的人工授精工作,但个别人工授精技术员操作存在受胎率偏低的问题。现就有关提高猪人工授精受胎率的技术措施与大家共同交流。1公猪的饲养与管理1.1合理饲养依据实际情况,对常年配种的公猪分别采取季节性加强饲养和一贯加强饲养,一年 相似文献
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This article analyses the advantages and disadvantages of artificial insemination with semen purchased from a center as well as from the herd boars on the farm. Intensive swine production could benefit greatly by adapting artificial insemination with herd boars, particularly from savings in labor and boar numbers. The techniques for semen collection, extension, and insemination are described, and sources for equipment given. Expected results of artificial insemination are quoted from experiments and international field experience. 相似文献
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Classical swine fever (CSF) virus was introduced into an artificial insemination centre during the CSF epizootic of 1997-1998 in the Netherlands. The risk of further spread of CSF virus via contaminated semen was recognised, but could not be assessed because scientific data on this issue were not available. An animal experiment was performed to determine whether CSF virus could be transmitted via artificial insemination with contaminated semen. Three boars were inoculated with a CSF virus field isolate and from Day 5 till Day 18 thereafter, ejaculates were collected and prepared for insemination. Ruttish sows were inseminated with the extended semen from Day 5 till Day 18 after inoculation of the boars. All the inoculated boars remained healthy throughout the experiment and developed CSF neutralising antibodies between 14 and 21 days after inoculation. Virus was isolated from several semen samples collected from 5 till 11 days after inoculation. Two out of six sows inseminated with CSF contaminated semen seroconverted after insemination. All the other sows remained seronegative. In the foetuses of both the seropositive sows, CSF virus was detected at approximately 35 days post insemination. These results demonstrate that adult boars infected with CSF virus can excrete virus with semen and can, subsequently, transmit the virus to sows and their foetuses via artificial insemination. 相似文献
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Effect of acrosomal defects on fertility of bulls used in artificial insemination and natural breeding 下载免费PDF全文
Meyer RA Barth AD 《The Canadian veterinary journal. La revue veterinaire canadienne》2001,42(8):627-4
Four bulls that produced spermatozoa with a high percentage of abnormal acrosomes were individually placed in pens with females for 21 days. Frozen semen from 2 of the bulls was used for artificial insemination. One of the bulls was placed in a competitive mating situation with normal bulls at pasture. First service pregnancy rates were determined by transrectal ultrasonography 28 days after bull removal from breeding pens, or after the last artificial insemination. The results of competitive mating at pasture were determined from breeding observations, the phenotypic characteristics of calves sired, and blood typing for parentage. The results of these studies suggest that bulls that produce a high percentage of spermatozoa with indented acrosomes may have normal fertility when used in artificial insemination or in single sire mating; however, their fertility may be low when breeding competitively with bulls with normal spermiograms. 相似文献