Table 5.
Effects of phytase supplementation on reproductive hormones of laying hens at 80 wk of age.
| Parameters | % of NPP without phytase |
% of NPP with phytase |
SEM | P value | ||||
|---|---|---|---|---|---|---|---|---|
| 0.20 | 0.25 | 0.30 | 0.20 | 0.25 | 0.30 | |||
| LH (ng/mL) | 2.65 | 2.96 | 3.58 | 3.75 | 4.27 | 4.16 | 0.19 | 0.080 |
| FSH (ng/mL) | 3.03c | 3.38bc | 4.27abc | 4.78ab | 5.23a | 5.18a | 0.24 | 0.013 |
| E2β (pg/mL) | 288.73 | 310.01 | 304.30 | 317.08 | 326.09 | 322.79 | 4.23 | 0.090 |
a–c
Values with different superscripts in the same row are significantly different (P < 0.05). SEM, standard error of the mean; LH, luteinizing hormone; FSH, follicle-stimulating hormone; and E2β, estradiol-17β. Ronozyme HiPhos-L, 6-phytase produced by the strain of Aspergillus oryzae was used to supply 1,000 FTY per kg of feed.