主题词：Gut microbiota and health; Animal Nutrition and Physiology; Aquaculture disease management and microbiota; Clostridium difficile and Clostridium perfringens research; Ruminant Nutrition and Digestive Physiology; Insect symbiosis and bacterial influences; Animal Behavior and Welfare Studies; Animal health and immunology; Pharmaceutical and Antibiotic Environmental Impacts; Probiotics and Fermented Foods; Microbial Community Ecology and Physiology; Invertebrate Immune Response Mechanisms; Aquaculture Nutrition and Growth; Milk Quality and Mastitis in Dairy Cows; Reproductive Physiology in Livestock; Insect Utilization and Effects; Amphibian and Reptile Biology; Microbial infections and disease research; Marine Biology and Ecology Research; Effects of Environmental Stressors on Livestock; Coral and Marine Ecosystems Studies; Insect and Arachnid Ecology and Behavior; Bird parasitology and diseases; Oral microbiology and periodontitis research; Reproductive tract infections research