Table 4.

Means of hypopharyngeal gland acini surface under feeding with different protein proteinic diets during nursing period of honeybee workers.

No.	Treatments	Means of proteinic diet amount consumed by honeybee workers (gm/100 bees/3 days)					General means
		3-days old	6-days old	9-days old	12-days old	15-days old
1	Bee bread	0.2057 ± 0.0669d	0.2432 ± 0.0482c	0.3102 ± 0.0671b	0.3114 ± 0.049b	0.3688 ± 0.0704a	0.2878 ± 0.0830A
2	Pollen loads + sugar (1:1)	0.1878 ± 0.0444e,d	0.1593 ± 0.0287h,g,f,e	0.2035 ± 0.0472d	0.1310 ± 0.0332j,i,h	0.1440 ± 0.0403h,g	0.1651 ± 0.0471B
3	Nectapol®	0.1406 ± 0.0307 h	0.0881 ± 0.0206m,l,k	0.1051 ± 0.0439k,j,i	0.0875 ± 0.0194m,l,k	0.0899 ± 0.0246m,l,k	0.1022 ± 0.0351D
4	Yeast, Gluten, Sugar (1:1:2)	0.1631 ± 0.0382 h,g,f,e	0.1880 ± 0.0532e,d	0.1560 ± 0.0544h,g,f,e	0.2374 ± 0.0924c	0.1412 ± 0.0320h	0.1771 ± 0.0661B
5	Traditional substitute	0.2827 ± 0.0725f,e,d	0.1344 ± 0.0243i,h	0.1017 ± 0.0427m,l,k,j	0.1758 ± 0.0443g,f,e,d	0.1059 ± 0.0234k,j,i	0.1400 ± 0.0559C
6	Sugar syrup (1:1)	0.1029 ± 0.0210 l,k,j	0.1520 ± 0.0321h,g,f	0.0702 ± 0.0269m	0.0887 ± 0.0260m,l,k	0.0719 ± 0.0224m,l	0.0971 ± 0.0394D

Means marked with different letters significantly differ at 5% level of probability.