Abstract
For sustainable intensification of rabbit industry, it is imperative to explore the potential of non-conventional feed resources. The researchers were driven to discover solutions for the shortage of feed in livestock production because of the ongoing rise in costs associated with conventional feed resources. Their efforts were directed at enhancing conventional sources and investigating alternative feed sources, including agricultural and agro-based industrial by-products. Therefore, the review examines the possible advantages of using guava leaf extract (Psidium guajava) as an example of non-conventional feed additive to improve the growth performance and overall health of commercially raised rabbits. Guava leaf extract contains a high concentration of bioactive substances, such as antioxidants, vitamins, and vital minerals. These substances have demonstrated advantageous effects on the feed efficiency, growth rate, and overall health of rabbits. This review article provides a thorough analysis of the current understanding and updates the knowledge about the physiological effects of adding guava leaf extract to rabbit diets, with a specific emphasis on its economic benefits. The findings demonstrated notable enhancements in feed conversion efficiency, growth rate, and immune system functionality, coupled with reductions in the total lipids levels and pathogenic microorganisms. Potential avenues for future investigation encompass the refinement of dosage, examination of synergistic impacts with other dietary constituents, and implementation of extended studies to validate the enduring advantages.