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  • Title: [Effect of different doses of lysine on the free amino acid content of the blood serum].
    Author: Vrubcheva V, Ibrishimov N.
    Journal: Vet Med Nauki; 1982; 19(6):104-10. PubMed ID: 6818754.
    Abstract:
    Investigations were carried out of the effect of various doses of lysine in the feed (6, 12, 24, and 30 g per fodder unit) on the amount of the total proteins, hemoglobin, and free amino acids in the blood serum. It was found that the free amino acids in the blood serum of sheep directly correlated with the content of lysine in the diet. The addition of 6 g lysine per fodder unit supplied the most adequate amount of amino acids in the body to meet the metabolic requirements. The concentration of free lysine in the serum remained at a comparatively/relatively constant level (2.5 mg%), the amount of total protein and hemoglobin was highest (within the range of the physiologic norms), and the general status of the animals proved best. The higher rates of lysine (24 and 30 g per fodder unit) led to an abrupt change in the concentration of all free amino acids in the serum, most strongly being affected glycine, aspartic acid, glutamic acid, alanine, and leucin. The amount of free amino acids (lysine) in the blood serum rose parallel to the increase in the lysine doses in the ration of sheep. At 30 g lysine per fodder unit there was a fivefold rise as against the control group.
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