highly significantp -values < 0.0001
There was a significant difference between farm and slaughterhouse samples, with farm samples showing higher IgG levels ( p = 0.0074) in pigs with a pleurisy score of 1, and the differences were highly significant, with p -values < 0.0001, indicating much higher IgG levels in farm samples compared to slaughterhouse samples in pigs classified with the most severe pleurisy scores of 3 and 4 ( Figure 2 ). 3.7.