Table 1.

Descriptive statistics of the different bird species. Values are mean ± SD.

Species	Gender	Age	Number	Bodyweight (kg)	Kidney weight (g)
Broiler chicken	♂	6 weeks	4	3.40 ± 0.16	9.75 ± 4.43
	♀	6 weeks	4	2.68 ± 0.22	7.00 ± 0.82
Laying chicken	♂	18 weeks	4	2.35 ± 0.13	7.00 ± 1.41
	♀	18 weeks	4	1.50 ± 0.08	6.74 ± 1.89
Turkey	♂	13 weeks	4	10.7 ± 0.98	33.50 ± 2.38
	♀	13 weeks	4	7.88 ± 0.43	28.50 ± 4.43
Pigeon	♂	6–12 months	4	0.48 ± 0.04	1.62 ± 0.20
	♀	6–12 months	3	0.42 ± 0.008	2.04 ± 0.17
Duck	♂	6 months	4	3.23 ± 0.19	15.30 ± 3.14
	♀	6 months	4	1.95 ± 0.19	6.00 ± 0.00
Parrot	♂	4–20 years	4	0.49 ± 0.05	—
	♀	4–20 years	4	0.45 ± 0.01	—