Table 2. Serum growth hormone (GH) levels in calves

	Early castrated (n = 8)	Late castrated (n = 8)	Female (n = 4)
GH level in blood serum (ng/mL)	3.94 ± 1.62^a	16.66 ± 8.26^b	4.91 ± 1.15^a

Data are presented as the means ± SD.
Superscripts indicate statistically significant differences (p < 0.05).