Effects of dietary protein level during rearing period and age at overfeeding on magret and foie gras quality in male mule ducks.

The aim of this trial was to study the effects of dietary protein content during the rearing period on the performance of mule ducks, according to age at overfeeding (O). Ducks (n = 612) were divided into four groups differing in the protein content in the diet offered during the starting period (S, 0-20 days; S vs. S : 150 vs.