他们买公猪但是不买后备母猪。
如何保持母猪的免疫力，特别是后备母猪！
How to maintain sow immunity particularly in replacement gilts!
选用太湖后备母猪70头为试验组。40头大白猪为对照组。
Taihu gilts were selected as experiment group, and 40 large-white pigs as control one.
她在阿尔伯塔大学获得动物科学硕士学位，并主修后备母猪的管理与繁殖。
She received her MSc in Animal Science from the University of Alberta, specializing in Gilt Management and Reproduction.
在性成熟阶段之前，对于那些生长过快很可能显著超过目标体重的后备母猪品种，有必要限制它们的能量摄入。
For genotypes whose growth rate is so rapid that they are likely to be significantly over the target weight before reaching puberty, it may be necessary to restrict energy intake.
我在俄罗斯看到的最讽刺的事情是，一些商业公司只在他们的核心场或扩繁场爆发疾病时才会购买%F1 代后备母猪！
One eof the most ironic things I see in Russia is commercial companies buying F1 gilts only when their own Nucleus or Multiplication farms break with disease!
当然购买一头f1代后备母猪从现金角度比自繁母猪要更贵，但是当你面对的是遗传进展的损失时，买猪会让企业更赚钱！
Yess of course buying an F1 gilt is more expensive in cash terms than producing your own, but when you factor in loss of genetic progress the business makes more profit by buying!
当然购买一头f1代后备母猪从现金角度比自繁母猪要更贵，但是当你面对的是遗传进展的损失时，买猪会让企业更赚钱！
Yess of course buying an F1 gilt is more expensive in cash terms than producing your own, but when you factor in loss of genetic progress the business makes more profit by buying!
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