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Table 4 Fertility and hatchability of duck breeders from 38 to 77 wk of agea, b

From: Effect of dietary canthaxanthin and 25-hydroxycholecalciferol supplementation on the performance of duck breeders under two different vitamin regimens

Vitamin level CX + 25-OH-D3 Fertility, % Fertilized eggs (per housed female) Hatchability of fertile eggs, % Hatchability of setting eggs, % Hatchability of total eggs, % Ducklings (per housed female) Healthy duckling, % Healthy ducklings (per housed female) 1-d-old weight, g
REGULAR - 87.7 163.7 91.7 80.4 77.4 150.2 90.8 136.3 59.2
REGULAR + 88.9 161.7 90.9 80.8 77.5 147.1 91.1 134.1 58.8
HIGH - 87.7 161.3 93.1 81.6 78.4 150.1 90.6 136.0 59.4
HIGH + 89.6 167.9 92.9 83.1 80.1 155.8 92.7 144.5 59.6
SEM 0.4 2.6 0.4 0.5 0.5 2.6 0.4 2.5 0.2
Vitamin 0.704 0.759 0.029 0.065 0.029 0.475 0.353 0.368 0.332
CX + 25-OH-D3 0.106 0.711 0.430 0.256 0.207 0.826 0.147 0.574 0.794
Vitamin × (CX + 25-OH-D3) 0.721 0.491 0.657 0.516 0.276 0.470 0.255 0.340 0.592
  1. a Mean of 9 times of incubation at wk 8, 12, 16, 20, 24, 28, 32, 36 and 40 of the trial
  2. b CX canthaxanthin, 25-OH-D 3 25-hydroxycholecalciferol