The influence of phytase, pre-pellet cracked maize and dietary crude protein level on broiler performance via response surface methodology

Table 6 Treatment means for the 13 dietary treatments on growth performance and mortality rate from 7 to 28 d post-hatch and toe ash, relative gizzard weight, relative gizzard contents, relative pancreas weights and gizzard pH at 28 d post-hatch

Treatments	Weight gain, g/bird	Feed intake, g/bird	FCR, g/g	Mortality rate, %	Toe ash, %	Relative gizzard weight, g/kg	Relative gizzard contents, g/kg	Relative pancreas weight, g/kg	Gizzard pH
1	1239	1837	1.485	0.00	11.73	20.91	6.17	2.44	2.48
2	1109	1728	1.575	8.33	11.54	21.37	4.83	3.11	2.58
3	1169	1701	1.455	0.00	11.57	19.81	4.08	2.87	2.37
4	1135	1642	1.448	0.00	11.58	19.29	4.68	3.05	2.39
5	1212	1785	1.475	0.00	12.59	20.75	5.62	2.68	2.53
6	1210	1802	1.488	2.78	12.42	20.99	4.78	2.59	2.41
7	1194	1700	1.423	0.00	12.82	19.44	6.15	2.70	2.55
8	1130	1638	1.462	2.78	12.72	19.24	4.40	2.93	2.69
9	1132	1587	1.403	0.00	12.89	19.66	5.19	2.81	2.63
10	1208	1828	1.517	2.78	12.58	20.80	6.23	2.66	2.43
11	1250	1750	1.400	2.78	12.58	19.66	4.75	2.82	2.50
12	1185	1762	1.497	2.78	12.56	20.35	5.03	2.71	2.47
13	1104	1682	1.540	8.33	12.94	20.16	5.62	3.02	2.83
Mean	1175	1726	1.474	2.35	12.35	20.19	5.19	2.80	2.53
Standard Deviation	99	106	0.102	5.84	0.658	1.67	1.74	0.35	0.24

ISSN: 2049-1891