Hematological blood profile of pigs fed with protein powder extracted from the black soldier fly (Hermetia illucens)

The search for alternatives to traditional soybean meal, a significant share of the protein components of pig feed, is particula r ly relevant. Using insect-based protein products is one of the most promising solutions in this area. The research was carried out on hybrid young pigs for 70 days. The young pigs of the control group were fed a nutrient-balanced diet, while the second group was fed a black soldier fly ( Hermetia illucens ) larvae-based protein powder supplement in 20 kg per tonne of feed. Using the protein supplement in the piglet diet increased piglet survival and live weight gain, proving the supplement’s effectiveness in improving pig production. An increase in average daily live weight gain of 23.3% with an improved feed conversion of 11.7% indicates improved nutrient absorption and increased efficiency of protein metabolism. Biochemical tests showed a higher level of total protein, an increase in globulin concentration, and a decrease in albumin, indicating a more active metabolism and a stronger immune response. A slight increase in the De Ritis ratio is still within the physiological norm. A 24.8% improvement in calcium-phosphorus metabolism caused by an increase in calcium concentration and a decrease in phosphorus shows the su p plement’s impact on the formation of the musculoskeletal system. Higher glucose levels indicate improved energy metabolism. The morphological composition of the blood shows changes in the hemopoiesis and immun e system: an increase in mean co r puscular hemoglobin and an increase in segmented neutrophils with a decrease in the level of lymphocytes and monocytes ind i cate the adaptation of the body to the conditions of feeding from insect protein powder.