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

Table 4 Fertility and hatchability of duck breeders from 38 to 77 wk of age^{a, b}

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

^a Mean of 9 times of incubation at wk 8, 12, 16, 20, 24, 28, 32, 36 and 40 of the trial
^b CX canthaxanthin, 25-OH-D ₃ 25-hydroxycholecalciferol

ISSN: 2049-1891