ABSTRACT
This study examined the effects of disease and injury on animal physiology, using Ogba Zoo, Benin City as a case study. The research was guided by three objectives: to examine the physiological changes that occur in animals as a result of specific diseases; to assess the impact of physical injuries on the organ systems and overall health of animals; and to evaluate the mechanisms through which animals respond and adapt to disease and injury at the cellular and systemic levels. The study adopted a descriptive survey research design and was conducted at Ogba Zoo, Benin City. The target population comprised all veterinary personnel, zoo keepers, animal care attendants, and administrative staff working at the zoo, totaling eighty individuals. The sample size of sixty-seven respondents was determined using the Taro Yamane formula with a 5% margin of error. Stratified random sampling was employed to ensure proportional representation from the four staff categories. A structured questionnaire was the primary research instrument, and its validity and reliability were established through expert review and pilot testing. Data was analyzed using descriptive statistics including frequencies and percentages, and the Chi-square test was employed to test the research hypothesis at a 0.05 significance level.
The findings revealed strong recognition of the physiological changes associated with diseases, with 79.1% of respondents agreeing that animals with infectious diseases exhibit elevated body temperature, 79.1% agreeing that diseased animals show increased heart rate as a compensatory response, 80.6% agreeing that respiratory infections cause increased respiratory rate and effort, and 82.1% agreeing that diseased animals commonly exhibit reduced appetite and food intake. The impact of physical injuries was also well recognized, with 83.6% agreeing that musculoskeletal injuries cause significant pain and impaired mobility, 76.1% agreeing that significant blood loss leads to compensatory tachycardia, and 68.7% recognizing the neurological effects of head injuries. Regarding mechanisms of adaptation and recovery, 85.1% agreed that the immune system plays a central role in defending against disease, 80.6% agreed that inflammatory responses are essential for tissue repair, 71.6% agreed that diseased or injured animals prioritize energy for immune responses and tissue repair, and 80.6% agreed that diseased animals show behavioral changes such as lethargy and reduced activity. The test of hypothesis using the Chi-square test yielded a statistically significant result (χ² = 24.563, p = 0.003), leading to the rejection of the null hypothesis and confirming that disease and injury have significant effects on the physiological functions of animals.
The study concluded that disease produces significant and measurable physiological changes in animals, including fever, tachycardia, increased respiratory rate, reduced appetite, and weight loss. Physical injuries have profound and multi-system effects on animal physiology, affecting musculoskeletal, cardiovascular, neurological, and integumentary systems. Animals possess complex physiological mechanisms to respond and adapt to disease and injury, including immune system activation, neuroendocrine stress responses, cellular repair, energy allocation, and behavioral adaptations. The study recommended that Ogba Zoo management should strengthen disease surveillance and monitoring systems, invest in continuing professional development and training programs for animal care staff, and develop comprehensive protocols for the management of injuries. Veterinary practitioners should incorporate comprehensive physiological monitoring into clinical practice and adopt evidence-based approaches to pain management and nutritional support. Policymakers should develop policies and guidelines for animal health management that are informed by understanding of animal physiology, and conservation organizations should integrate physiological monitoring into conservation programs. The study contributes empirical evidence on the physiological effects of disease and injury in zoo animals, validates the application of theoretical frameworks to zoo animal populations, and provides evidence-based recommendations for improving animal health management. Future research should expand the scope to include a wider range of animal species, investigate the long-term physiological consequences of chronic disease and severe injury, and examine the effectiveness of specific interventions in mitigating the physiological effects of disease and injury.
