Table 2.
Reproduction and production performance of indigenous chickens in intensive, semi-intensive and free-range systems in Kenya and Tanzania.
| Country | Performance traits | Intensive system | Semi-intensive system | Free-range system | References |
|---|---|---|---|---|---|
| Kenya | Age at first egg (days) | 166 | 203 | 224 | Magothe et al. 2012 |
| Number of clutches per year | 4 | 3 | 2.5 | ||
| Number of eggs per clutch | 30 | 21.2 | 11.1 | ||
| Annual egg production | 120 | 75 | 40 | ||
| Hatchability (%) | 74.2 | 77 | 84 | ||
| Adult male body weight (g) | 2210 | - | 1,770 | ||
| Adult female body weight (g) | 1,660 | - | 1,320 | ||
| Tanzania | Growth and feed conversion | Sanka and Mbaga 2014 | |||
| Slaughter weight (g) | 1,556 | 1,414 | - | ||
| Average daily gain (g/day) | 11.95 | 9.84 | - | ||
| Feed conversion efficiency (g feed/gain) | 8.25 | 5.49 | - | ||
| Carcass traits | |||||
| Dressing (%) | 65.18 | 65.71 | - | ||
| Breast (%) | 23.56 | 24.93 | - | ||
| Thigh (%) | 17.28 | 17.36 | - | ||
| Drumstick (%) | 15.36 | 15.32 | - |