3.2. Experimental diets
Diets were formulated to contain similar protein (close to 40%), as
shown in Table 3, while the proportions of lipids and ashes were variable.
Regarding the lipid content three levels were observed: 7%
(control, DS and commercial diet), 11–14% (DI) and 19–21% (DM).
Only two levels for the ash proportion can be distinguished: 10% for
the 9 experimental feeds formulated from proteolysis experiments
and around 14% for the control and commercial diets. Only the crude
fiber contents didn't change whatever the feeds (2–2.3%). The total
amino acid content of the 11 diets ranged from 30 to 33 g/100 g, as
shown in Table 4. The essential amino acid content varied within a
narrow range (16.5–17.8 g/100 g) and contributed to more than
half (54–55%) of the total amino acids quantified.