Animal welfare is increasingly being valued by captives and the general public, and it is an important issue for captive caregivers to provide suitable conditions and proper care for captive animals, and because animal welfare assessment is a difficult task, many researchers often use behavioral observation and physiological measurement (cortisol) when assessing animal welfare in captivity. Parameters to understand its stress index, in addition to acoustic activity has also been found to be a potentially effective method to assess the stress index of captive animals, this study will be through the environment, physiology, behavior abnormalities as an assessment, environmental anomalies are divided into environmental sound abnormalities, night-over presence, water temperature anomalies and water level anomalies to analyze, Physiological abnormalities, which are divided into trauma and illness, will analyse the sound of the three beluga whales at the National Museum of Marine Life through these different environmental and physical changes in order to improve their animal welfare by understanding their environmental facilities and physical health.
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