Table 3.
Effect of genistein on growth performance of broiler chickens from 21 to 42 d of age.
| Item | TN | HS + GEN (mg/kg diet) |
|||
|---|---|---|---|---|---|
| 0 | 50 | 100 | 150 | ||
| Body weight (g) 21 d | 704.59 ± 9.06 | 703.47 ± 8.74 | 708.91 ± 23.91 | 695.19 ± 12.35 | 704.88 ± 14.33 |
| Body weight (g) 42 d | 2088.88 ± 43.87 | 1720.38 ± 45.06## | 1882.38 ± 54.36* | 1931.88 ± 32.16** | 1928.63 ± 37.72** |
| ADG (g) | 69.21 ± 2.06 | 50.85 ± 2.25## | 58.67 ± 2.99* | 61.83 ± 2.05** | 61.19 ± 1.74** |
| ADFI (g) | 144.04 ± 2.21 | 127.33 ± 1.75## | 132.88 ± 1.81 | 136.04 ± 1.46* | 137.65 ± 4.37** |
| FCR | 2.09 ± 0.05 | 2.54 ± 0.12## | 2.30 ± 0.11 | 2.21 ± 0.07* | 2.26 ± 0.10* |
Data are presented as means ± SE. Each treated group represents 8 chickens at the age of 42 d, ##P < 0.01, compared with the TN group; *P < 0.05 and **P < 0.01, compared with the HS group.
ADFI, average daily feed intake; ADG, average daily gain; FCR, feed conversion ratio; GEN, genistein; HS, heat stress; TN, thermoneutral zone.