Table 2.

Differences between the antioxidative enzyme activity of each pair of breeds.

Type of Sample and Enzyme	Amount of Additive	Polish Merino compared to Wrzosówka
		Statistical Significance	Difference between Averages	Standard Error
Serum SOD	150 g	0.603	±0.271	0.517
	300 g	0.000 **	±2.079	0.517
	control	0.000 **	±2.803	0.517
Liver SOD	150 g	0.963	±0.098	2.122
	300 g	0.624	±1.049	2.122
	control	0.019 *	±5.168	2.122
Plasma GPx	150 g	0.259	±14.375	12.553
	300 g	0.325	±12.500	12.553
	control	0.692	±5.000	12.553
Liver GPx	150 g	0.124	±9.125	5.812
	300 g	0.008 **	±16.057	5.812
	control	0.308	±6.000	5.812

The multiple pairwise comparisons test and post hoc Bonferroni procedure showed some significant differences between antioxidative enzymes activity of each pair of breeds: * means p ≤ 0.05, ** means p ≤ 0.01. GPx: glutathione peroxidase; SOD: superoxide dismutase.