Effect of a hormonal treatment (PMSG and HCG) on primiparous and multiparous sows exhibiting no oestrus after drying-off Françoise MARTINAT-BOTTE, F. BARITEAU and P. MAULÉONAnn. Zootech., 26 3 (1977) 446DOI: https://doi.org/10.1051/animres:19770318