* From: Jennes R. (1974) The composition of milk. In “Lactation” (B.L. Larson and V.R. Smith eds.) Vol. III, pp. 3-107, Academic Press, New York.

a From: Vincenzetti S., Polidori P., Mariani P., Cammertoni N., Fantuz F., Vita A. Donkey’s milk protein fractions characterization. Food Chemistry 106 (2008) 640–649

# From: Salimei E., Fantuz F., Coppola R., Chiofalo B., Polidori P., Varisco G. Composition and characteristics of ass’s milk. Anim. Res. 53 (2004) 67–78

$ From: Gastaldi D., Bertino E., Monti G., Baro C., Fabris C., Lezo A., Medana C., Baiocchi C., Mussap M., Galvano F., Conti A. Donkey’s milk detailed lipid composition. Frontiers in Bioscience E2, 537-546, January 1, 2010