而繁殖障碍性疾病和饲养管理不当是突出的问题。
But reproductive obstacle disease and feed demerits are the outstanding problem.
猪细小病毒(PPV)是引起母猪繁殖障碍的主要病原体之一。
PPV is one of the most main pathogen that can cause failure in propagation of pigs.
遗传工程可突破物种间的杂交繁殖障碍，使基因在自然界不同物种间迁移。
Genetic engineering techniques bypass crossbreeding barriers between species to enable gene transfer between widely differing organisms.
母猪繁殖障碍疾病在各种猪场都有不同程度的发生，该病已成为大中型猪场重要疾病。
Diseases with reproductive disorder in sow occurred in all kinds of pig farms at different degree, becoming an important pig ailment in large-to-medium sized pig farms.
本文总结了引发母猪繁殖障碍性疚病的因素及如何临床诊断，并针对性地提出了防治措施。
This paper summarizes the main factors that effect sow reproduction disorder and how to diagnose them, and brings forward counter measures for prevention and cure.
猪是本病毒的天然宿主和贮存者，该病可引起严重的繁殖障碍，给养猪业造成了巨大的经济损失。
Swine was the natural host and reservoir of PRV, this sickness may cause the serious reproduction barrier, has created the huge economic loss to the pig industry.
猪繁殖障碍与呼吸道综合征（PRRS）和猪圆环病毒2型（PCV-2）是近几年来严重危害猪群的两大免疫抑制性疾病。
Porcine reproductive and respiratory syndrome(PRRS) and porcine circovirus type 2(PCV-2) are two immunosuppressive diseases which are greatly endangering swine in recent years.
母猪繁殖障碍造成的经济损失严重，因而有必要对发病原因进行分析，阐述流行及主要表现，制定合理免疫程序，提出综合防制措施。
So it is necessary to analyze its causes, to expatiate its popularity and major symptoms, to work out vaccination system and top…
但是谁会预测这个好莱坞近亲繁殖的产物(这是她对自己的形容)会把名人家庭功能障碍变成这样难忘的作品？
But who would have predicted that this product of Hollywood inbreeding (she called herself that) would have turned celebrity family dysfunction into such memorable writing?
穿透身体自然障碍的微生物会遭遇到抑制其生长与繁殖的物质（例如干扰素）。
Microbes that penetrate the Body's natural Barriers encounter substances (such as interferon) that inhibit their growth or reproduction.
无性繁殖在林业中应用很普遍，而由树木发育阶段转变带来的成熟效应问题，一直是无性系造林的障碍。
Vegetative propagation is widely used in forestry, however, the maturation that due to phase changes during tree development is a huge obstacle.
由主要障碍的繁殖新的接口被认为是事实，即在数量上，其支持的公司有没有三星，正在现已领导人对市场的NAND闪存。
By main obstacle to the propagation of new interface is seen the fact that in the number of its supporting companies there are no Samsung, being now been the leader of the market For nAND-flash.
这一来消除了障碍，汽车电影院得以像兔子一样快速繁殖。
That cleared the way for drive-ins to35 multiply like rabbits.
近交衰退指近交个体的适合度相对下降的现象，它是近亲繁殖的主要障碍。
Inbreeding depression is the decrease of offspring fitness after inbreeding and is one of the primary forces selecting against the evolution of self-fertilization.
母猪不孕症是母猪生殖机能发生障碍，暂时或永久性不能繁殖后代的病理现象。
Sterility of sows refers to a pathological phenomenon of permanent or temporary inability to conceive or produce an offspring, triggered by procreation dysfunction of the sows.
母猪不孕症是母猪生殖机能发生障碍，暂时或永久性不能繁殖后代的病理现象。
Sterility of sows refers to a pathological phenomenon of permanent or temporary inability to conceive or produce an offspring, triggered by procreation dysfunction of the sows.
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