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

Table 2

Concentration of adenine nucleotides: ATP, ADP, AMP ($\mu$M), total adenylate nucleotide pool (TAN) and values of the adenylate energy charge (AEC) in erythrocytes of mares Wielkopolska breed (w), Hanoverian breed (h), Ardenian breed (a) Legend: $\bar{x}$-mean; ±SD—standard deviation; ^**- significant difference (P < .01); *- significant difference (P < .05), n-group size.

Group	$n$		ATP	ADP	AMP	TAN	AEC	RBC [10^12/L]	Hb [g/L]
			$\mu {\text{M}}_{{\rm M}\text{RBC}}$
w	8	$x$	175.4	27.8	6.1	209.3	0.90	8.27	92
		$\pm$SD	9.6	3.2	1.1	10.7	0.004	0.61	7.5
h	10	$x$	150.4	24.0	4.0	178.5	0.91	8.05	88
		$\pm$SD	21.5	1.8	0.5	21.0	0.013	0.77	2.2
a	10	$x$	147.3	28.0	5.4	180.7	0.89	7.53	73
		$\pm$SD	21.2	2.9	0.6	23.0	0.010	0.81	7.1
Statistical significance			w, a*	h, a^**	h, a^**	w, h*	h, a^**	w, a*	w, a*
of the group differences			w, h*	w, h*	w, h^**	w, a*			h, a*