摘要
由于猪的粪便中含磷量很高,被用作肥料所带来的磷污染问题日趋严重,引起了人们的广泛关注。为了降低猪粪中磷所带来的污染,众多研究人员都试图通过分子生物学方法减少猪粪便中磷的排出量来解决这个问题,通过大量的试验研究,提出了许多新方法。本文从分子生物学方法的3个方面论述提高磷的利用率,即通过添加经分子生物学改造植酸酶来提高饲料磷的消化率;通过遗传方法改进大豆、玉米磷的水平来减少猪粪磷的含量;以及通过基因编码植酸酶来提高动物的代谢潜能(转植酸酶基因猪)。
Because of swine manure is high in phosphorus, phosphorus pollution caused by using manure as fertilizer to land is a serious and growing problem, which has drawn people＇s attention. In order to lower the pollution of swine manure phosphorus, many animal nutritionists tried to reduce fecal phosphorus excretion by using molecular biology methods and have put forward many new ways by doing large quantity experiments. This lecture will narrate the strategy of improving the availability of phosphorus mainly from molecular biology following three aspects including improving the digestibility of phosphorus by the addition of rebuild phytase by molecular biology methods, reducing phosphorus in pig manure by genetically enhancing corn and soybean meal and expressing genes coding for phytase that enhance metabolism potential of food animals transgenic pigs.
出处
《华北农学报》
CSCD
北大核心
2006年第B10期172-176,共5页
Acta Agriculturae Boreali-Sinica
基金
中国科学院知识创新工程领域前沿项目(032000320000301)
关键词
分子生物学
猪
磷
利用率
Molecular biology
Pig
Phosphorus
Availability
作者简介
张永刚（1981-），男，硕士，主要从事单胃动物营养的研究；
印遇龙为通讯作者。
