Circadian changes in the abomasal secretions of the preruminant calf P. GUILLOTEAU, R. TOULLEC, Marguerite BEAUFILS, S. BOUSSION, H. FLAGEUL, Monique LESNE and Y. MANIS Reprod. Nutr. Dévelop., 23 6 (1983) 967-977 DOI: 10.1051/rnd:19830703