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. 2019 Dec 30;99(1):350–363. doi: 10.3382/ps/pez501

Table 8.

Effect of diet on egg quality, component weights and yolk colorimeter measurements for Experiment 1.1
Brassica napus
 Brassica juncea
 Pooled
 P-value
Control Meal Cake Meal Cake SEM Diet
Egg quality
 Albumen height, mm 9.6 9.2 9.1 9.0 9.0 0.3 0.559
 Haugh units 95.93 94.17 93.95 93.49 94.63 1.29 0.751
 Albumen pH 8.42 8.27 8.39 8.23 8.25 0.06 0.142
 Yolk pH 6.53a 6.26b 6.31b 6.26b 6.26b 0.03 <0.001
 Specific gravity 1.090 1.091 1.093 1.090 1.093 0.001 0.338
Egg component weights
 Intact egg weight, g 66.18 65.55 63.71 63.84 63.02 0.96 0.075
 Albumen, g 39.98a,b 40.62a 38.35b,c 38.06b,c 37.49c 0.71 0.009
 Albumen, % of egg 60.41 60.63 60.55 60.03 59.80 0.35 0.397
 Shell, g 8.84 8.67 8.51 8.56 8.61 0.15 0.610
 Shell, % of egg 13.37 13.33 13.43 13.51 13.66 0.23 0.851
 Yolk, g 17.30 16.98 16.81 16.78 16.67 0.26 0.492
 Yolk, % of egg 26.14 26.13 26.21 26.31 26.45 0.28 0.931
Yolk color2
 L* 58.63a 55.69b 55.68b 54.80b 55.01b 0.43 <0.001
 a* −4.86a −6.05b −6.20b −6.01b −6.06b 0.15 <0.001
 b* 22.98d 28.47b 27.68b,c 30.87a 26.05c 0.72 <0.001
1

LSmeans based on 6 cages of 4 birds each per diet.

2

Yolk color measured using a model CR-400 Chroma Meter (Konica Minolta; Ramsey, NJ, USA). Yolk color is expressed using the CIELAB color space system, where L* is the lightness variable and a*, b* specify the color within a 2 dimensional coordinate system.

a–c

Means within a row lacking a common superscript differ (P < 0.05).