FORNECIMENTO DE PLASMA SUÍNO SPRAY-DRIED DILUÍDO EM ÁGUA ACIDIFICADA PARA LEITÕES COM SINTOMAS DE CIRCOVIROSE NO INÍCIO DA FASE DE CRESCIMENTO E TERMINAÇÃO

The effect of the spray-dried porcine plasma diluted in drinking acidified water for recovery of piglets with clinical signs of the Post-Weaning Multisystemic Wasting Syndrome (PMWS) was studied. The experiment was conducted in eight finishing units of an agroindustry of Santa Catarina State, Brazil, with positive diagnosis of PMWS by histopathology, immunohistochemistry (IHC) and polimerase chain reaction (PCR). The study was initiated around 14 days after the lodging of the piglets and concluded 42 days later. The experiment was randomly designed by weight and sex with two treatments: T1 - water ad libitum as a control group and T2 – a solution constituted of porcine plasma (250g) in drinking acidified water (10L). The animals were distributed into two batch pens in the same facility with nine or ten piglets per pen, being one the control pen and the other one the treated pen. The following variables were evaluated: pH of water and solution; individual weight and clinical conditions of the piglets; solution intake within the period from 0 to 14 days, feed intake and feed conversion rate; mortality rate, histopathology and IHC analysis of the animals that died. The piglets of T2 presented clinical improvement during the 14 days of the experiment and a better feed conversion rate at 28 days of the experiment. Performance data did not show statistical difference between the treatments, except for feed conversion in the group that received T2, which was better than control group (T1) p= 0.0372 for the main effect. It was concluded that piglets with PMWS signs, which received plasma in acidified water, presented clinical improvement during the 14 days of the experiment, in comparison with control animals and better feed conversion ratio at the first 28 days of the experiment.