Bulletin of the National Research Centre

Table 2 Effects of the interaction between storage period and position, storage period and egg size, and egg size and position on chicks hatched and hatchability percentage

From: Effects of storage periods and positioning during storage on hatchability and weight of the hatched chicks from different egg sizes

		Chicks hatch Mean ± SE	% hatchability Mean ± SE
Period*position
1	Down	40.67 ± 0.78	90.37 ± 1.74
1	Up	42.67 ± 0.33	94.82 ± 0.74
4	Down	37.33 ± 1.48	82.96 ± 3.29
4	Up	40.33 ± 0.67	89.63 ± 1.48
7	Down	41.67 ± 0.53	92.59 ± 1.17
7	Up	42.00 ± 0.58	93.30 ± 1.28
10	Down	39.33 ± 0.67	87.41 ± 1.48
10	Up	37.67 ± 1.24	83.70 ± 2.75
13	Down	34.33 ± 0.73	76.30 ± 1.61
13	Up	36.33 ± 1.13	80.74 ± 2.51
Position*size
Down	Large	40.00 ± 0.60	88.89 ± 1.34
	Medium	41.60 ± 0.46	92.44 ± 1.01
	Small	37.80 ± 1.21	84.00 ± 2.68
Up	Large	38.40 ± 0.98	85.33 ± 2.19
	Medium	39.80 ± 0.97	88.44 ± 2.16
	Small	37.80 ± 0.88	84.00 ± 1.95
Period*size
1	Large	41.50 ± 0.43	92.20 ± 0.95
	Medium	43.00 ± 0.37	95.56 ± 0.81
	Small	40.50 ± 1.18	90.00 ± 2.61
4	Large	35.00 ± 1.39	77.78 ± 3.09
	Medium	42.00 ± 0.37	93.33 ± 0.81
	Small	39.50 ± 0.76	87.78 ± 1.70
7	Large	42.50 ± 0.43	94.40 ± 0.95
	Medium	41.50 ± 0.76	92.22 ± 1.70
	Small	41.50 ± 0.76	92.22 ± 1.70
10	Large	39.50 ± 0.43	87.78 ± 0.95
	Medium	41.00 ± 0.37	91.11 ± 0.81
	Small	35.00 ± 0.97	77.78 ± 2.15
13	Large	37.50 ± 0.43	83.33 ± 0.95
	Medium	36.00 ± 1.39	80.00 ± 3.09
	Small	32.50 ± 0.43	72.22 ± 0.95
Period*position		*	*
Period*size		*	*
Position*size		*	*

Large ≥ 70 g, medium 65–69 g, small 60–64 g. NS not significant, Down air cell facing downwards, Up air cell facing upwards. *Significant at P < 0.05

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