Effect of Crumble-Pellet and Mash Diets with Different Levels of Dietary Protein and Energy on the Performance of Broilers at the End of the Third Week
Table 2
Weight gain and feed conversion ratio (FCR) of broiler chickens fed on mash and crumble-pellet as affected by various metabolizable energy (ME) and crude protein (CP) levels of the diets* at the end of the third week (mean + SE).
Treatments
Protein (%)
Energy (Kcal/Kg)
Diet form
Weight gain (g)
FCR (g/g)
1st wk
2nd wk
3rd wk
1st wk
2nd wk
3rd wk
1
23
3200
A
177ab ± 1.7
486a ± 4.8
951a ± 5.3
.84c ± 0.004
1.13d ± 0.009
1.31e ± 0.013
2
21
3200
A
172b ± 2.1
464b ± 4.8
905b ± 6.2
.86c ± 0.003
1.15d ± 0.009
1.35d ± 0.009
3
23
3000
A
179a ± 3.1
488a ± 6.8
936a ± 10.5
.85c ± 0.005
1.14d ± 0.011
1.30e ± 0.012
4
21
3000
A
177ab ± 2.2
475ab ± 4.2
913b ± 6.4
.88c ± 0.018
1.18c ± 0.004
1.37cd ± 0.007
5
23
3200
B
162c ± 1.8
438c ± 4.6
842c ± 4.4
.87c ± 0.024
1.18c ± 0.016
1.36d ± 0.014
6
21
3200
B
156de ± 1.6
422d ± 3.1
818d ± 8.5
.89bc ± 0.020
1.21c ± 0.011
1.39c ± 0.004
7
23
3000
B
158cd ± 1.8
420d ± 3.3
798d ± 6.4
.94ab ± 0.032
1.24b ± 0.013
1.43b ± 0.013
8
21
3000
B
151e ± 1.6
401e ± 2.4
757e ± 8.3
.95a ± 0.007
1.28a ± 0.005
1.49a ± 0.008
value
a-b-c-d Means with lacking common superscripts differ significantly.
*Mean of 7 replicates having 50 birds in each replicate.
**A; crumble-pellet diet, B; mash diet.