Effects of fasting on blood composition and nitrogen losses in the adult sheep depending on previous diet and body weight J. CI. BOUCHAT, Françoise DOIZÉ, R. PAQUAY, Marie-Antoinette BOUCKOMS and D. CLOOSTERMANS Reprod. Nutr. Dévelop., 20 1A (1980) 77-92 DOI: 10.1051/rnd:19800104