We have Brecon Buff x Pilgrim and at the moment they only get grass during the day (3 weeks old and under mesh cover outside) and some grower pellets at night time (in shed under heat lamp), these are incubator hatched. No idea how quicly Toulouse grow, but ours will go until sometime late November - mid December ready to eat for Xmas.
If you feed to high a protein diet early on they can develop "angel wing", which doesn't stop them from being ok to eat, but not too good in general for them.