Nugmanova A, Baktygerey N, Nametov A, Shamshidin A and Makhimova Z, 2026. Development of diet formulations for Linda breed geese of different age groups to improve feeding efficiency and metabolic processes. Agrobiological Records 24: 141-151. https://doi.org/10.47278/journal.abr/2026.032

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Goose production requires nutritionally balanced diets that support rapid growth, efficient nutrient utilization, and stable metabolic processes during early development. For Linda Goslings, optimizing feed mixtures with locally available ingredients and high-quality protein sources is important for improving feeding efficiency under farm conditions. The aim of this study was to investigate the effect of diet composition on nutrient digestibility and metabolic processes in Linda goslings. The experiment was conducted at the West Kazakhstan Agrarian and Technical University named after Zhangir Khan, where one control and two experimental groups were formed. The control group received the basic feed mixture, while the diets of experimental groups II and III were supplemented with fish meal at levels of 3% and 6%, respectively. The chemical composition of the feeds and the digestibility coefficients of dry matter, crude protein, fat, fiber, and nitrogen-free extractives were evaluated. In addition, nitrogen and calcium balance, as well as energy metabolism, were assessed. The inclusion of fish meal increased the digestibility of the main nutrients, with the highest values generally observed in experimental group III. At 35–42 days of age, males in group III showed dry matter digestibility of 77.9%, crude protein 87.7%, crude fat 61.8%, crude fiber 38.7%, and nitrogen-free extractives 81.3%. By 63 days of age, nitrogen utilization reached 53.3%, calcium utilization 53.7%, metabolizable energy 3.37 MJ, and net energy gain 1.18 MJ per head. The obtained results indicate that the developed feed mixtures with fish meal improve nutrient utilization and metabolic processes in Linda goslings, with the most pronounced effect observed at the 6% inclusion level. The high biological efficiency of the developed diets can enhance feeding quality and increase productivity in goose production.