請(qǐng)教這一段怎么翻譯？

Franks

The number of sows to bleed when investigating disease depends on many factors. To give an idea of how confident one can be in interpreting serological results, two examples are given below.  These do not represent a protocol - logistic, welfare and time issues may prevent large numbers of sows being bled, especially outdoors. The examples serve to illustrate that, when limited numbers of sows are bled, one must be cautious about reading too much into the results.

Franks

謝謝你們，翻譯得蠻專業(yè)的。“置性度”是“置信度”嗎？

Franks

整合兩位大哥的翻譯，我翻譯如下：
“當(dāng)進(jìn)行疾病調(diào)查之時(shí)，母豬采集血樣的數(shù)量是由許多因素決定的。下面舉兩個(gè)例子回答究竟多大置信度才能夠解釋血清學(xué)結(jié)果。這并不是真實(shí)的方案，福利和時(shí)間的爭(zhēng)論可能會(huì)阻止大量母豬采血，尤其是在戶外時(shí)。這兩個(gè)例子只是用來說明，當(dāng)采血母豬頭數(shù)有限時(shí)，你必須對(duì)所得結(jié)果持謹(jǐn)慎態(tài)度。”

Franks

In contrast, a diagnosis is made in over 50% of submissions for ovine reproductive disease, as this more regularly presents as abortion due to pathogens which are also readily identified.
這段怎么翻譯？?jī)蓚€(gè)as，一個(gè)due to 把握弄迷糊了

Franks

樓上的是周先生嗎？