Hilal Çapar Akyüz

Utilizing waste materials in broiler diets supports the principles of the circular economy and promotes environmental sustainability. However, it is essential to ensure that such practices do not compromise meat quality or composition. This experiment evaluated how incorporating shrimp processing waste into broiler diets influences breast meat physicochemical properties, nutrient composition, amino acid profiles, and antioxidant properties. A total of 315 Ross 308 male broiler chicks were allocated to diets containing varying inclusion levels of shrimp waste and reared for 42 days. At the end of the feeding period, seven birds from each treatment group were selected for slaughter, and a total of 35 breast muscle samples were collected for laboratory analyses. Parameters including pH, color, water-holding capacity, cooking loss, nutrient content, amino acid composition, and antioxidant indices were determined. Dietary shrimp waste did not influence pH₁₅ but increased pH₂₄ values. Lightness and redness remained unaffected, whereas yellowness increased. Cooking loss, water-holding capacity, and nutrient composition were not significantly altered. Alanine and aspartic acid levels decreased in groups supplemented with shrimp waste, whereas glycine content increased in the group receiving 1% shrimp waste during the first 10 days. Antioxidant parameters and the oxidative stress index were also unchanged. These findings indicate that incorporating shrimp waste into broiler diets can enhance feed sustainability without compromising meat quality.