8Young R J, Griffth M, Desai I D, et al. The Response of Laying Hens Fed Low Protein Diets to Glutamic Acid and Diammonium Citrate[J]. Poultry Sci,1965(44):14~28.
9呙于明.家禽营养与饲料[M].北京:中国农业大学出版社,1999..
10Leek A G, Beattie V E, O'Doherty J V. The Effects of Dietary Oil in Inclusion and Oil Source on Apparent Digestibility, Faecal Volatile Fatty Acid Concentration and Manure Ammonia Emission[J]. British Animal Science,2004,79:155~164.