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英语翻译When used at levels higher than those covering animal re

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英语翻译
When used at levels higher than those covering animal requirements
and up to 175 mg and further to 250 mg/kg feed,copper impacts on
the growth and feed conversion of young pigs,from weaning to a
body weight of approximately 25 kg (8 to 10 weeks of age).
英语翻译When used at levels higher than those covering animal re
当动物吸收的铜高于它们的正常需求,达到175毫克/千克饲料,甚至达到250毫克/千克饲料时,铜能够对小猪的生长和喂养产生影响,使小猪断奶后长至大约25千克重(8至10周).