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The importance of magnesium supplements on organ retention of cadmium and allometric parameters after repeated exposure to cadmium chloride were studied in male Wistar rats. Magnesium chloride was given via drinking water (500 mg Mg/L) to rats exposed intragastrically to cadmium chloride (labelled with cadmium 109) at a daily dose corresponding to 25 mg/kg diet for 7, 14, 21, and 28 d. Supplements...
The paper presents the analytical procedure of organic acids quantification in compound feed by ion chromatography method. Organic acids: acetic, propionic, formic, malic, fumaric, and citric were extracted from a feed sample with water for 30 min. The measurement was done by conductometric detection. The limit of quantification of the assayed acids in the feeds was as follows: acetic 0.50 g/kg, propionic...
The analytical procedure of canthaxanthine quantification in premixes and compound feed by the HPLC method was presented. The principle of this method is based on the hydrolysis of powdered formulation of canthaxanthine with trypsin and pepsin in a water solution of ammonia and its purification in an aluminium oxide filled column. The canthaxantine content is determined by high performance liquid...
The analytical procedure of riboflavin quantification in premixtures and compound feedingstuffs by high performance liquid chromatography (HPLC) analysis is presented. Riboflavin was extracted from feed sample in autoclave with 0.1M sulphuric acid. The ester bonds with phosphoric acid were hydrolysed by the Taka-diastase enzyme. Riboflavin content was determined by HPLC with reversed-phase and usage...
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