Changes in Adenylate Nucleotides Concentration and Na⁺, K⁺-ATPase Activities in Erythrocytes of Horses in Function of Breed and Sex

Table 4

The Na⁺, K⁺-ATPase activities of the erythrocytes and Na⁺ : K⁺ ions ratio in blood serum of stallions and mares Wielkopolska breed (W, w), Hanoverian breed (H, h), Ardenian breed (A, a).

Group	$n$		${\text{Na}}^{+},$${\text{K}}^{+}$-ATPase	${\text{Na}}^{+}$ : ${\text{K}}^{+}$
			$\mu$mol$P_i$/mg protein/h
W	8	$x$	0.34	32.30
		$\pm$SD	0.06
H	8	$x$	0.34	34.80
		$\pm$SD	0.01
A	10	$x$	0.22	37.70
		$\pm$SD	0.05
w	8	$x$	0.28	34.20
		$\pm$SD	0.02
h	10	$x$	0.33	34.70
		$\pm$SD	0.04
a	10	$x$	0.19	39.20
		$\pm$SD	0.02