Influence of organic versus inorganic dietary selenium supplementation on the concentration of selenium in colostrum, milk and blood of beef cows

Table 3 Mean values of blood chemistry and haematology for beef cows receiving selenium-enriched yeast (SY), sodium selenite (SS) or no selenium supplementation (C) for 12 weeks.

	Group
	SY	SS	C	SEM¹
Analysis
Red blood cells, × 10¹²/L	7.15	6.3	6.03	0.58
White blood cells, × 10⁹/L	7.28	6.47	7.60	0.58
Haemoglobin, g/L	102.0	102.5	99.8	1.43
Total proteins, g/L	68.0	83.2	76.8	7.63
Urea mmol/L	3.20^b	5.71^a	3.88^b	1.29
Creatine kinase, μkat/L	4.39	4.14	4.77	0.72
Aspartate aminotransferase, μkat/L	1.61	1.58	1.66	0.04
Glutathione peroxidase μkat/L*	364.70^a	283.82^b	187.46^c	88.73

¹Standard error of the mean of 18 cows. 17 degrees of freedom.
^abc Statistically significant differences (P < 0.05) of urea concentration and glutathione peroxidase activity in SY, SS and C in the same row are designated by different superscripts.
* Glutathione peroxidase activity values were determined in heparinized whole blood

ISSN: 1751-0147