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发表于 2010-12-8 16:05:56
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美国《猪病学》第九版第7页有这麽一句话,择录如下:
The lower critical limit is the temperature
below which a pig will use extra feed to maintain its
body temperature (Barnett et al. 2001). Pigs provided
with straw in the winter months will tolerate a lower
temperature. For every 5°C below the lower critical temperature,
sows will need to be fed an extra 250 g
feed/day. For every 1°C below the lower critical temperature
for grower/finisher pigs, each pig will have to consume
an extra 3.3 kg of feed to reach market weight. |
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