Egg shell color

Egg shell grading (%)

Air cell grading (%)

AA

A

B

AA

A

B

White

23.90^b

63.39^a

12.71^a

13.86^b

63.75^a

22.39^a

Brown

36.70^a

56.57^b

6.76^b

17.77^a

62.14^a

20.09^a

SEM¹

0.06

0.07

0.14

0.15

0.30

0.58

Collection date

Summer season

17-06-2015

28.66^b

66.68^a

4.66^bc

6.67^bc

57.17^bc

42.16^a

1-07-2015

29.98^ab

65.57^a

5.45^bc

15.68^abc

75.00^ab

9.32^b

15-07-2015

18.82^c

78.17^a

3.01^bc

8.93^bc

85.76^a

5.31^b

29-07-2015

30.01^ab

64.49^a

5.50^bc

0.00

55.4^bc

44.6^a

12-08-2015

28.76^b

66.70^a

4.54^bc

6.75^bc

57.17^bc

42.16^a

26-08-2015

29.16^ab

65.578^a

5.26^bc

15.67^abc

75.00^ab

9.32^b

9-9-2015

18.71^c

78.21^a

3.08^bc

8.73^bc

85.76^a

5.31^b

23-09-2015

30.02^ab

64.39^a

5.49^bc

6.73^bc

55.67^bc

37.6^a

Autumn/winter seasons

7-10-2015

26.82^b

57.33^a

15.85^b

19.42^abc

64.75^ab

15.83^b

21-10-2015

37.59^a

27.90^b

34.51^a

32.00^a

34.33^c

33.67^a

4-11-2015

35.5^a

54.50^a

10.00^bc

27.83^ab

67.42^ab

4.75^b

18-11-2015

35.66^a

64.33^a

7.30^b

17.95^abc

67.78^ab

14.27^b

2-12-2015

26.85^b

58.35^a

12.80^b

20.35^abc

66.72^ab

12.93^b

16-12-2015

38.72^a

27.84^b

33.44^a

33.54^a

33.56^c

32.90^a

30-12-2015

35.62^a

53.29^a

11.09^bc

28.91^ab

68.47^ab

2.62^b

13-01-2016

35.66^a

64.33^a

7.3^b

16.85^abc

68.78^ab

14.37^b

SEM¹

0.068

0.0736

0.0429

0.064

0.083

0.051

P > F

Egg shell color

0.0098

0.01955

0.0463

0.4166

0.7715

0.5852

Collection date

0.5938

0.0037

0.0001

0.0338

0.0075

<0.0001

ESC × CD

0.9485

0.6742

0.4223

0.7063

0.6554

0.8172