The challenge of the French dairy goat sector is to reduce feeding costs. One of technical solutions is to increase forage intake and produce cereal-legume mixtures on farms. The aim of this trial was to evaluate the effects of the distribution of a meslin in whole or processed grain on milk performance of dairy goats fed with a ventilated hay and whole grain loss in the faeces. Two homogeneous groups of 23 Alpine goats were created based on their individual characteristics measured during a reference week: lactation number (2.6±1.5), stage of lactation (164±12 days), milk production (2.5±0.6 kg/d), milk fat concentration (33.8±4.1 g/kg), milk protein concentration (35.6±2.5 g/kg), body weight (57.5±9.7 kg). During 14 days, goats were fed in groups ad lib (>13% of refuses) with a ventilated hay. Each goat received individually 500 g/d of a commercial concentrate and 80 g/d of flattened sunflowers grains, fed at milking time (8:30 and 16:30). At 11:00, 400 g/d of cereal-legume mixture of whole (W) or flattened (F) grains were distributed individually. The mixture was composed of 65% of triticale and 35% of peas. The particle size more than 5 mm was 29% and 5% and those of less than 2 mm was 1 and 39% for the W and F mixture, respectively. After 7 days of adaptation, individual milk production and composition were measured during 3 days. Faeces were individually sampled twice a day during 3 last days from 15 goats of each group. Processing grains had no effect on forage intake (1.82±0.05 kg DM/goat/d). Milk production, milk protein concentration, milk urea and milk solids were not different between the groups. Milk fat concentration was significantly higher by 5.9 g/kg (P<0.01) for goats of the W group (44.2 vs 38.3 g/kg). The whole grains (mainly triticale) represented 12% of DM faeces from goats fed with whole grains. The distribution of a cereal-legume mixture in whole grains with a high value forage modify the production of milk fat concentration but the quantity of milk solids is not different between the groups. The losses of grains in faeces are limited but the efficiency of the distributed ration could be modified.