论文部分内容阅读
芬兰科学家研究发现，增加鸡饲料中维生素Ｄ的含量，可以生产出维生素Ｄ含量较高的鸡蛋。科学家用三组年龄为３０周龄的母鸡进行对比试验，将鸡饲料中维生素Ｄ３含量提高到标准混合饲料的３－５倍，用这种饲料喂养６周以后，母鸡所产鸡蛋中维生素Ｄ３的含量可达到普通鸡蛋的７
Finnish scientists found that increasing the vitamin D content of chicken feed can produce eggs with high vitamin D content. Scientists with three groups of 30-week-old hens for comparison test, the vitamin D3 content in chicken feed increased to 3-5 times the standard mixed feed, with this feed for 6 weeks after the hen produced eggs in vitamins D3 content can reach 7 ordinary eggs