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	177^ab  ± 1.7	486^a  ± 4.8	951^a  ± 5.3	.84^c  ± 0.004	1.13^d  ± 0.009	1.31^e  ± 0.013
2	21	3200	A	172^b  ± 2.1	464^b  ± 4.8	905^b  ± 6.2	.86^c  ± 0.003	1.15^d  ± 0.009	1.35^d  ± 0.009
3	23	3000	A	179^a  ± 3.1	488^a  ± 6.8	936^a  ± 10.5	.85^c  ± 0.005	1.14^d  ± 0.011	1.30^e  ± 0.012
4	21	3000	A	177^ab  ± 2.2	475^ab  ± 4.2	913^b  ± 6.4	.88^c  ± 0.018	1.18^c  ± 0.004	1.37^cd  ± 0.007
5	23	3200	B	162^c  ± 1.8	438^c  ± 4.6	842^c  ± 4.4	.87^c  ± 0.024	1.18^c  ± 0.016	1.36^d  ± 0.014
6	21	3200	B	156^de  ± 1.6	422^d  ± 3.1	818^d  ± 8.5	.89^bc  ± 0.020	1.21^c  ± 0.011	1.39^c  ± 0.004
7	23	3000	B	158^cd  ± 1.8	420^d  ± 3.3	798^d  ± 6.4	.94^ab  ± 0.032	1.24^b  ± 0.013	1.43^b  ± 0.013
8	21	3000	B	151^e  ± 1.6	401^e  ± 2.4	757^e  ± 8.3	.95^a  ± 0.007	1.28^a  ± 0.005	1.49^a  ± 0.008
𝑃 value				.000	.000	.000	.000	.000	.000

^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.