Table 2.
Mean monthlya and cumulativeb number of eggs, hen-day (HDP) and hen-housed (HHP) rates of egg production and mortality during the early part laying period, to 44 weeks of age, in Horro chicken
| Trait | Period (week) | Hens housed, n | Mean, n (±SE) | HDP (%) | HHP (%) | Mortality (%) |
|---|---|---|---|---|---|---|
| M1 | 21–24 | 328 | 0.71 (0.13) | 2.53 | 2.34 | 7.6 |
| M2 | 25–28 | 303 | 4.06 (0.33) | 14.50 | 12.87 | 11.2 |
| M3 | 29–32 | 269 | 7.82 (0.41) | 27.93 | 26.69 | 4.5 |
| M4 | 33–36 | 257 | 8.98 (0.44) | 32.07 | 30.82 | 4.0 |
| M5 | 37–40 | 247 | 8.25 (0.44) | 29.47 | 28.51 | 3.2 |
| M6 | 41–44 | 239 | 7.34 (0.39) | 26.23 | 25.57 | 2.5 |
| EP12 | 21–28 | 328 | 4.78 (0.41) | 8.68 | 7.12 | 18.0 |
| EP36 | 29–44 | 269 | 31.77 (1.31) | 30.31 | 26.26 | 13.4 |
| EP16 | 21–44 | 328 | 33.64 (1.56) | 23.55 | 16.73 | 29.0 |
| AFE | 203 | 190.00 (1.77) |
AFE age at first egg (in days)
aM1, M2, M3, M4, M5, and M6, egg numbers in the first, second, third, fourth, fifth, and sixth months, respectively
bEP12, EP36, and EP16, cumulative number of eggs produced from months 1 to 2, 3 to 6, and 1 to 6, respectively