我国现有良种及改良种奶牛350万头,每年可产牛初乳20多万吨。牛初乳因其特有的感官性状而很少被人食用。近年来的研究表明,牛初乳中含有大量的生物活性物质和促生长因子,对婴儿和老年人有很好的保健作用。为了探索牛初乳中有无抗诱变物质成分,我们进行了牛初乳对小鼠骨髓细胞微核形成的抑制作用的实验研究。 There are 3.5 million heads of improved seeds and improved cows in our country, capable of producing over 200,000 tons of colostrum each year. Colostrum is rarely consumed by humans for its unique sensory properties. In recent years, studies have shown that colostrum contains a large number of bioactive substances and growth factors, good effect on the health of infants and the elderly. In order to explore the presence or absence of anti-mutagenic substances in colostrum, we conducted an experimental study on the inhibitory effect of colostrum on the micronuclei of mouse bone marrow cells.