The spermidine levels in all meats had initial values between
6.77 and 7.78 mg kg1. Only conventional chicken showed a slight
increase in the first 5 days, followed by a gradual decrease. By day 9,
all meats showed values between 6.29 and 6.57 mg kg1, respectively, which remained constant (p > 0.05) until the end of storage.
In the case of spermine, the initial values were between 8.98 and
10.38 mg kg1 for all meats except for that of organic chicken,
which contained 23.67 mg kg1. After 9 day, there was a marked
reduction of all values, reaching ca. 1.50 mg kg1 and remaining
constant for the rest of storage (p > 0.05).