Table 2 The feeding schedule for the three experimental groups.
Item | 16 | 17 | 18 | 19–22 | 23–28 |
---|---|---|---|---|---|
Concentrate feed (kg/day) | 8.5 | 9.5 | 10.0 | ad libitum | ad libitum |
Alfalfa hay (kg/day) | – | – | – | – | 0.2 |
Rice straw (kg/day) | 2.0 | 2.0 | 1.5 | 1.5 | 1.5 |
Folic acida (mg/day) | 6.9 | 7.6 | 7.8 | 7.8≦ | 8.5≦ |