Optimum broiler development

4. Ultimate performance indicators
4.1. 7-day mortality/weights
●
●
●
●
●
●
Mortality percentage is a good indicator of chick
quality, hatching process, house set up and early
brooding management.
Maximum seven day mortality should not exceed
1% cumulative.
Measuring seven-day weights will give an indication
of how successful the brooding management has
been.
Failure to achieve good seven-day weights will mean
an inferior result at the end of the growing cycle.
For every gram at day 7 we should target an
increase to 11.8 g (0.03 lb) at 35 days.
The objective is to achieve 4.4 times the day old
weight at seven days of age-minimum.
Age
days
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Weight
for Age (g)
42
56
72
89
109
131
157
185
215
247
283
321
364
412
465
524
586
651
719
790
865
943
1023
1104
1186
1269
1353
1438
1524
1613
1705
1799
1895
1993
2092
2191
Weight
for Age (lb)
0.093
0.123
0.159
0.196
0.240
0.288
0.346
0.408
0.474
0.545
0.624
0.708
0.803
0.908
1.025
1.155
1.292
1.435
1.585
1.742
1.907
2.079
2.254
2.432
2.613
2.796
2.981
3.171
3.360
3.557
3.760
3.967
4.178
4.395
4.613
4.831
Daily
Gain (g)
0
14
16
17
20
22
26
28
30
32
36
38
43
48
53
59
62
65
68
71
75
78
80
81
82
83
84
85
86
89
92
94
96
98
99
99
Daily
Gain (lb)
0.000
0.031
0.035
0.037
0.044
0.048
0.058
0.062
0.066
0.071
0.079
0.084
0.095
0.106
0.117
0.130
0.137
0.143
0.150
0.157
0.165
0.172
0.175
0.179
0.181
0.183
0.185
0.190
0.189
0.197
0.203
0.207
0.212
0.216
0.218
0.218
Average
Daily Gain (g)
26.4
26.9
27.4
28.3
29.2
30.3
31.7
33.2
34.9
36.6
38.3
39.9
41.6
43.3
44.9
46.4
47.8
49.3
50.8
52.1
53.6
54.4
55.6
56.8
58.0
59.2
60.4
61.5
62.6
Average
Daily Gain (lb)
0.058
0.059
0.061
0.062
0.064
0.067
0.070
0.073
0.077
0.081
0.084
0.088
0.092
0.095
0.099
0.102
0.106
0.109
0.112
0.115
0.117
0.120
0.123
0.125
0.128
0.131
0.133
0.136
0.138
4. Ultimate performance indicators