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The Duration of Farrowing in Relation to the Reproductive Performance of Yorkshire Sows

Records for 212 attended farrowings by 38 Yorkshire sows were examined. Eighty per cent of the farrowings were less than six hours, 18 per cent between six and 12 hours and two per cent between 12 and 17 hours duration. There appeared to be no marked relationship between the duration of farrowing an...

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Hlavní autoři: Friend, D. W., Cunningham, H. M., Nicholson, J. W. G.
Médium: Artigo
Jazyk:Inglês
Vydáno: 1962
Témata:
On-line přístup:https://ncbi.nlm.nih.gov/pmc/articles/PMC1583532/
https://ncbi.nlm.nih.gov/pubmed/17649374
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