英语翻译When used at levels higher than those covering animal requirementsand up to 175 mg and further to 250 mg/kg feed,copper impacts onthe growth and feed conversion of young pigs,from weaning to abody weight of approximately 25 kg (8 to 10 we

Question

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).

Answer 1

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）.