Table 5. Effect of Arg supply and genotype on egg quality of eggs1 examined at the end of each laying month.
WLA |
BLA |
R11 |
L68 |
ANOVA (p values) |
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---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LA | AA | HA | LA | AA | HA | LA | AA | HA | LA | AA | HA | PSEM | GT | DIET | AGE | GT×DIET | GT×AGE | DIET×AGE | GT×DIET×AGE | |
Yolk proportion, % | ||||||||||||||||||||
week 25 | 23.9cd | 24.5cd | 24.5cd | 22.3e | 22.7e | 22.5e | 24.9c | 26.0bc | 25.6bc | 26.2b | 26.1b | 27.6a | 0.2 | <0.001 | <0.05 | <0.001 | <0.05 | <0.001 | n.s. | <0.1 |
week 29 | 26.0b | 26.5b | 25.7b | 23.0c | 23.2c | 23.6c | 27.7ab | 28.1ab | 27.9ab | 27.8ab | 28.2a | 28.9a | 0.3 | |||||||
week 33 | 27.0c | 28.0bc | 27.6bc | 23.8d | 24.3d | 24.7d | 29.5b | 28.7ab | 29.2ab | 30.0a | 30.0a | 30.1a | 0.3 | |||||||
week 37 | 27.8bc | 27.2c | 26.7c | 24.4d | 24.5d | 24.6d | 28.8b | 28.9b | 29.2ab | 30.1ab | 31.1a | 31.0ab | 0.3 | |||||||
week 41 | 28.1bc | 27.5bc | 27.1c | 24.3d | 24.5d | 24.7d | 30.0ab | 29.4b | 30.1ab | 31.5ab | 32.0a | 31.6ab | 0.4 | |||||||
Shell proportion, % | ||||||||||||||||||||
week 25 | 12.1ab | 12.5a | 12.5a | 11.5b | 11.9ab | 11.8ab | 11.3bc | 11.5b | 11.4b | 10.8bc | 11.3bc | 10.6c | 0.1 | <0.001 | n.s. | <0.001 | <0.01 | <0.001 | <0.001 | <0.001 |
week 29 | 12.1ab | 12.4a | 12.3a | 11.4b | 11.5b | 11.4b | 10.9bc | 10.9bc | 10.8bc | 10.3c | 10.4c | 10.4c | 0.1 | |||||||
week 33 | 12.9b | 14.2a | 14.1a | 13.4ab | 13.3ab | 12.2bc | 12.9b | 12.6bc | 13.4ab | 11.8bc | 10.9c | 10.9c | 0.2 | |||||||
week 37 | 12.4a | 12.1ab | 11.5ab | 12.4a | 11.8ab | 12.4a | 11.1b | 10.9bc | 10.9bc | 10.4bc | 10.3c | 10.5bc | 0.2 | |||||||
week 41 | 12.0ab | 11.9ab | 12.3a | 11.3b | 10.7bc | 11.3b | 10.6bc | 10.5bc | 10.7bc | 10.1c | 10.2c | 10.3bc | 0.2 | |||||||
Albumen proportion, % | ||||||||||||||||||||
week 25 | 64.1ab | 62.9bc | 63.0bc | 66.3a | 65.4ab | 65.7ab | 63.8b | 62.5bc | 62.9bc | 63.1bc | 62.5bc | 61.8c | 0.3 | <0.001 | <0.05 | <0.001 | <0.1 | <0.001 | <0.05 | <0.001 |
week 29 | 61.9b | 61.1b | 62.0b | 65.6a | 65.3a | 65.1a | 61.4b | 61.1b | 61.3b | 62.0b | 61.4b | 60.7b | 0.3 | |||||||
week 33 | 60.1b | 57.8c | 58.3bc | 62.8a | 62.5a | 63.2a | 57.6c | 58.8bc | 57.4c | 58.2bc | 59.0bc | 59.0bc | 0.3 | |||||||
week 37 | 59.8bc | 60.7b | 61.8ab | 63.2a | 63.7a | 63.0a | 60.2bc | 60.3bc | 59.9bc | 59.4bc | 58.6bc | 58.4c | 0.4 | |||||||
week 41 | 59.9bc | 60.5b | 60.6b | 64.4a | 64.8a | 64.0a | 59.4bc | 60.1bc | 59.2bc | 58.5bc | 57.8c | 58.1c | 0.4 | |||||||
Yolk colour, Roche scale | ||||||||||||||||||||
week 25 | 13.4bc | 13.6bc | 13.5bc | 13.6bc | 13.2c | 13.2c | 14.3a | 13.7b | 13.7b | 13.7b | 13.5bc | 13.8ab | 0.1 | <0.001 | n.s. | <0.001 | <0.01 | <0.001 | <0.01 | <0.05 |
week 29 | 12.9ab | 12.8ab | 12.8ab | 13.0a | 12.4b | 12.8ab | 13.0a | 12.8ab | 13.0a | 13.0a | 13.0a | 13.1a | 0.1 | |||||||
week 33 | 12.3b | 12.6ab | 12.7ab | 12.9a | 12.8ab | 12.7ab | 12.9a | 12.7ab | 12.6ab | 12.5ab | 12.6ab | 12.5ab | 0.1 | |||||||
week 37 | 12.7b | 13.1ab | 12.9ab | 12.7b | 12.6b | 12.7b | 13.1ab | 13.3a | 13.1ab | 13.1ab | 13.1ab | 12.9ab | 0.1 | |||||||
week 41 | 12.7ab | 12.6ab | 12.8ab | 12.6ab | 12.7ab | 12.5b | 12.6ab | 12.7ab | 13.1a | 12.6ab | 12.9ab | 12.8ab | 0.1 |
eggs collected on four consecutive days of n=36 hens of each experimental group
Proportions of egg components are calculated as weight of components (yolk, shell and albumen) per weight of total egg.
LSMeans values with PSEM (n=36 chicks/experimental group) in the same row with different superscripts are significantly different (p<0.05)
n.s.=not significant