Channel ( Ictalurus punctatus ) and hybrid (channel, I. punctutus , female × blue, I. fircatus , male) catfish were harvested from the same pond. Fillets were overwrapped or vacuum‐skin packaged and stored 13 days at 4°C. Carcass characteristics, chemical, microbiological and sensory qualities were compared. No significant differences in body weight and proximate composition between the two genotypes were found. However, the visceral fat of the hybrids was significantly higher than that of channel catfish. Vacuum‐skin packaged fillets had significantly lower free fatty acid levels and psychrotrophic populations than did overwrapped fillets on the 13th day of refrigerated storage.
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Huang et al. (1994) studied this question.
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