The same authors found that meat from surgically castrated and non-castrated males was more resistant to cut than the meat from immunocastrated meat.A plausible cause for this difference may be the compensatory growth of immunocastrated pigs compared to surgically castrated and non-castrated pigs at the end of the finishing period, followed by an increased proteolytic capacity (reason: calpain:calpastatin) and a high rate of softening.