Table 5.

Performance of broilers fed diets supplemented with phytase from1to 21, 33, and 42 days of age

Variables	Experimental diets1)						p-value	SEM
	No phytase	Phytase 500 +MT A	Phytase 1,000 +MT A	Phytase 1,500 +MT A	Phytase 1,000 +MT B	Phytase 1,500 +MT C
1–21 days
FBW (g)	996	967	1,000	997	977	965	0.092	4.85
BWG (g/bird)	951	922	954	952	932	919	0.092	4.89
FI (g/bird)	1,338	1,299	1,324	1,322	1,338	1,314	0.697	7.64
FCR (g:g)	1.35	1.34	1.33	1.33	1.37	1.36	0.319	2.70
Liv (%)	98.8	98.3	99.4	98.3	98.3	97.7	0.780	0.33
1–33 days
FBW (g)	2,105	2,096	2,128	2,135	2,083	2,117	0.375	7.75
BWG (g/bird)	2,060	2,050	2,083	2,090	2,038	2,071	0.375	7.78
FI (g/bird)	3,126	3,074	3,081	3,105	3,082	3,096	0.859	12.24
FCR (g:g)	1.48	1.47	1.45	1.45	1.48	1.46	0.081	0.01
Liv (%)	97.1	97.7	98.9	98.3	97.1	95.9	0.556	0.45
1–42 days
FBW (g)	2,830	2,883	2,893	2,899	2,810	2,931	0.156	14.90
BWG (g/bird)	2.785	2.838	2.845	2.854	2.765	2.886	0.154	14.87
FI (g/bird)	4.657	4.687	4.666	4.685	4.600	4.735	0.619	20.75
FCR (g:g)	1.65	1.63	1.61	1.61	1.64	1.62	0.245	0.01
bwcFCR (g:g)	1.67	1.64	1.62	1.62	1.67	1.61	0.080	0.02
Liv (%)	93.7	96.6	94.9	94.2	95.4	93.7	0.816	0.66

SEM, standard error of the means; FBW, final body weight; BWG, body weight gain; FI, feed intake; FCR, feed conversion ratio; Liv, livability; bwcFCR, weight corrected feed conversion ratio.

¹⁾Matrix A (MT A): 0.165% Ca; 0.150% avP; and 0.035% Na; matrix B (MT B): 0.215% Ca; 0.195% avP and 0.045% Na; matrix C (MT C): 0.245% Ca; 0.225% avP and 0.053% Na.