Spirulina as a Natural Feed Additive: Impact on Health and Performance of Broilers and Laying Hens

Abstract

This chapter provides a comprehensive review of the effects of incorporating Spirulina into poultry diets, focusing on its impact on growth performance, immune function, egg production, microbial control, and overall poultry health. Spirulina, a blue-green algae known for its rich nutrient profile, including proteins, vitamins, minerals, and bioactive compounds, offers a range of benefits when included in poultry nutrition. Studies have shown that Spirulina supplementation improves weight gain, feed conversion ratio, and immune responses in both broiler chickens and laying hens. Additionally, it enhances the quality of eggs, particularly yolk pigmentation, without affecting feed intake. Furthermore, Spirulina demonstrates antimicrobial properties, contributing to improved gut health by promoting beneficial bacteria and reducing harmful microorganisms. The chapter also explores the optimal inclusion levels of Spirulina in poultry diets, offering insights into its potential as a natural, sustainable supplement to enhance poultry productivity and welfare. Through an analysis of recent research, this chapter highlights the scientific evidence supporting the inclusion of Spirulina as an effective and safe nutritional supplement for poultry farming.