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The aim of this study was to evaluate the content of lipids and their effect on progesterone concentration in the blood serum of cows. Experimental material was sampled from lactating and dry cows (41 specimen) of Polish Holstein-Friesian breed Black and White sub-species cattle, aged 3 to 6 years (lactation month 4-6 and pregnancy month 9, respectively) in two different maintenance periods, i.e....
The aim of the study has been to estimate the effect of culture conditions and a culture site on magnesium (Mg) concentrations in freshwater fish. The study encompassed tissues (blood) and organs (gills, liver, kidney, dorsal muscles) of five fish species: common carp (Cyprinus carpio L.), rainbow trout (Oncorhynchus mykiss Walbaum), Siberian sturgeon (Acipenser baeri Brandt), northern pike (Esox...
We estimated the impact of seasonal and anthropogenic contaminants on antioxidant status and lipid peroxidation in common carp. The fish were reared in a power station cooling canal and in a natural pond. The examined blood parameters were: superoxide dismutase (0.91 to 5.01 U・mg⁻¹ HGB), glutathione peroxidase (3.13 to 21.03 U・mg⁻¹ HGB), bilirubin (0.44 to 1.22 mg・dl⁻¹), urea (1.66 to 6.33 mg・dl⁻¹),...
This study aimed at determining relationships between the age of the Wielkopolski horses, ATP in whole blood and in the erythrocytes, and between erythrocyte Na+, K+-ATPase activity, and serum concentrations of mineral components. ATP was measured in whole blood and in erythrocytes by HPLC method. Serum concentrations of Ca²⁺ and Mg²⁺ were measured spectrophotometrically, while Na+ and K+ by flame...
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