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  • Title: [Methemoglobin level in the blood of agricultural animals and poultry].
    Author: Nikolov I.
    Journal: Vet Med Nauki; 1982; 19(3):16-21. PubMed ID: 7135816.
    Abstract:
    Studies were carried out with all kinds of farm animals and birds with regard to the quantitative determination of methemoglobin in their blood in connection of seasonal changes. Blood was immediately treated upon sampling. Methemoglobin determination was carried out spectrophotometrically. Evaluated was also the percent of nitrates in the rations of the animals and birds. It was found that during the winter the amound of methemoglobin in the blood of both animals and birds varied from 0.25 to 4.4 of the total amount of methemoglobin. Its percent content during the summer varied from 0.25 to 4.17 with animals, and from 9.5 to 15.7 with birds of the total amount of methemoglobin. The amount of blood methemoglobin was found to correlate directly with the percent of nitrates in the ration. Except for birds, the seasons had no effect on the values of methemoglobin. The breed, weight, age, and physiologic status (pregnancy, barrenness) did not either affect the amount of methemoglobin. There were individual variations of the methemoglobin values with animals of one and the same species.
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