Table 4. Effect of different content on carcass trait of male Pekin ducks on 21 day of age
1)
Item
Dietary protein content (%)
SEM
p
-value
15
17
19
21
23
25
Empty body weight (%)
70.51
71.14
71.24
70.85
71.00
71.32
0.171
0.791
Drumstick (%)
7.31
7.45
7.74
7.51
7.74
7.67
0.060
0.204
Breast meat (%)
6.33
6.50
6.86
7.34
6.36
7.22
0.154
0.235
Each value is the mean of 6 replicates (1 bird per cage).