Droppings were individually collected twice a week for the whole rearing period (between 4 and 53 d of age) using the method of individual total collection of excreta (Bourdillon et al., 1990).
Droppings were individually collected twice a week for the whole rearing period (between 4 and 53 d of age) using the method of individual total collection of excreta (Bourdillon et al., 1990).