Agriculture Reference
In-Depth Information
1700
1600
1500
1400
1300
1200
1100
1000
900
800
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
Digestible lysine (%)
Fig. 14.9.
Effect of different digestible lysine levels on total body weight gain estimated for
28-
to
42-
day-old
broilers. Data presented are those observed (
·
) by Dozier
et al
. (2010) and predicted by model (- - -). Bars
represent one standard deviation.
2.80
2.60
2.40
2.20
2.00
1.80
1.60
1.40
1.20
1.00
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
Digestible lysine (%)
Fig. 14.10.
Effect of different digestible lysine levels on feed conversion response estimated for
28-
to
42-
day-old broilers. Data presented are those observed (
•
) by (Dozier
et al
., 2010) and predicted by model
(- - -). Bars represent one standard deviation.
Evaluation of the model under health
challenge conditions
specific geographical region of Brazil was
collected. Out of these,
146
flocks were
housed after a shorter downtime than that
recommended to achieve proper disinfec-
tion of the facilities (<12 days). The other
177
flocks were housed after a downtime
longer than 12 days. Broilers housed after
In order to evaluate the model in the pres-
ence of health challenges, information on
live weight, feed intake and weight gain of
323 male Cobb flocks reared on farms in a
