Agriculture Reference
In-Depth Information
210
190
170
150
130
110
90
Ref.
T+6
Fine100%
70
20
22
24
26
28
30 32
Age (days)
34
36
38
40
42
Fig. 9.8.
Evolution of daily feed intake from
21
to 41 days of age in four simulations compared to the
reference scenario (Ref.). T+6: reference indoor temperatures + 6°C compared to Ref. Fine100%: at 35 days,
transition from a diet without fine particles (<0.5 mm) to a diet with 100% fine particles.
2.50
2.30
2.10
1.90
1.70
1.50
Ref.
T+6
Fine100%
1.30
20
22
24
26
28
30 32
Age (days)
34
36
38
40
42
Fig. 9.9.
Evolution of daily feed conversion ratio from
21
to 41 days of age in four simulations compared to
the reference scenario (Ref.). T+6: reference indoor temperatures + 6°C compared to Ref. Fine100%: at 35
days, transition from a diet without fine particles (<0.5 mm) to a diet with 100% fine particles.
As a consequence of this decrease in feed
intake and daily gain,
FCR
for the
35-41-
day
period is higher in Fine100% (2.30 g/g) than
in Ref. (2.01 g/g) as shown in
Fig. 9.9.
This
simulation underlines the importance of
taking into account the physical character-
istics of diet in order to maintain animal
performance, especially during feed tran-
sition as recommended by Quentin
et al
.
(2004).
