They also mentioned good health, high-quality weaners and an absence of drafts in the pig pens to be important to minimize the risks.
他们还提出良好的健康、高质量的断奶、避免贼风对降低风险也很重要。
2
This article is evaluation of the inner environmental condition on a closed house for weaners on the base of the data of the observations in winter, spring and summer.