Аннотация
В данной статье рассматривается вариабельность уровня кортизола у коров различных пород (голштинская, красная степная, симментальская) и его связь с типами стрессоустойчивости. Исследование показало, что у голштинской породы лимиты кортизола составляют 30,27-184,12 нмоль/л, при этом 11,11% коров отнесены к низкому типу стрессоустойчивости, 18,52% к высокому, а 70,37% к нестабильному типу. У красной степной породы лимиты кортизола варьировались в пределах 9,4-171,67 нмоль/л, причем 19,35% коров отнесены к низкому типу, 58,06% к нестабильному и 22,58% к высокому типу. Для симментальской породы лимиты кортизола составили 45,95-188,47 нмоль/л, из которых 14,29% коров отнесены к низкому типу, 64,29% к нестабильному и 21,43% к высокому типу. Полученные данные свидетельствуют о широких индивидуальных особенностях животных и наличии различных стрессовых ситуаций. Установлена взаимосвязь между высоким базальным уровнем кортизола и стрессом. Определение кортизола в крови остается наиболее популярным физиологическим показателем
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Использованные источники
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