ACID FISH OFFAL SILAGE AS A SOURCE OF PROTEIN IN GROWING AND FINISHING RATIONS FOR BACON PIGS

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Abstract
Three factorially designed experiments, involving 136 growing-finishing Yorkshire pigs, were carried out to determine the feeding value of acid-ensiled cod and haddock offal. Rate of gain, feed efficiency and carcass characteristics indicated that this product was a satisfactory source of supplementary protein. However, a moderate off-flavor was detected in the meat from pigs fed fish silage to market weight. The intensity of the off-flavor was not affected by removal of fish silage from the ration of pigs at approximately 170 pounds body weight when slaughtered at 200 pounds. The results from discontinuing the feeding of fish silage when the pigs reached body weights of 100 and 150 pounds on off-flavor in the meat were not conclusive.

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