Study of seasonal dynamics of indexes of protein metabolism in dophines of afalin in conditions of utrish dolphinary

The article presents the results of the study of protein metabolism in the Black Sea bottlenose dolphins in the conditions of the Utrish dolphinarium of the open type. Dolphins are kept in conditions that are as close as possible to natural ones. Therefore, they are fully influenced by various factors of the external environment - daily and seasonal variations in air and sea water temperature, atmospheric precipitation, changes in the direction and speed of movement of air masses. The study of the metabolism of dolphins within the framework of this study objectively reflects the trends inherent in these animals during their life in freedom. The serum of the blood was examined for the content of total protein, albumins, globulins, urea and creatinine. The concentration of total protein and its fractions showed no pronounced seasonal changes. A feature in the Black Sea bottlenose dolphins associated with a low content of albumin in the blood serum is found - from 7.56 to 10.33 g /l. This is an adaptive mechanism to regulate the oncotic blood pressure in the aquatic environment. The content of urea and creatinine revealed significant differences due to the change in the seasons of the year. The lowest values of the urea level were determined in the autumn season, in the winter the indicator significantly increased by 18.5%, in the spring - by 23.5%. This indicates an increased conversion of amino acids into glucose in the cold seasons. The minimal concentration of creatinine was found in the winter season, in summer and autumn the indicator significantly increased by 29.2% and 22.4%, respectively. This is explained by intensive training and performances of dolphins in the regime of increased load on skeletal muscles.

дельфины, черноморские афалины, дельфинарий, метаболизм, сезонность, белковый обмен, dolphins, Black Sea bottlenose dolphins, dolphinarium, metabolism, seasonality, protein metabolism

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