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. 2016 Jan 25;53(1):8–21. doi: 10.2141/jpsa.0150067

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)
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
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.

a–d

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