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The aim of the study was to determine how selected hematological and immunological parameters are affected when growing pigs are transferred from the rearing unit to the finishing house. Blood was collected from 64 healthy growing pigs one week before and one week after they were transferred to the finishing house. The following tests were performed: complete blood count with machine differential, immunoglobulin levels, C-reactive protein (CRP) level and cortisol level. Pigs were divided into two groups. Group A contained those pigs with a normal white blood cell (WBC) count, and Group B those with an elevated WBC count. Throughout the experiment, body weight and indoor microclimate conditions were also monitored. After transfer, the neutrophil count increased, while the lymphocyte count decreased. Hematocrit (HCT0, mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC) also decreased. CRP level and cortisol level increased. Red blood cell (RBC) count was higher and mean corpuscular volume (MCV) was lower in Group B. CPR level and immunoglobulin G (IgG) level were also higher. On the other hand, average daily gain (ADG) was higher in Group A. Although the presence of subclinical infections cannot be ruled out, the changes observed were probably caused by other stressogenic factors such as transport, adaptation to a new maintenance system, and worse sanitary conditions. Those with elevated WBC counts before transport were most susceptible to adaptive stress. Keywords: Pig, transfer, immunity, C-reactive protein (CRP), cortisol, immunoglobulin, stress African Journal of Biotechnology Vol. 12(34), pp. 5258-5266

Selected hematological and immunological parameters in pigs transferred from the rearing unit to the finishing house