Effects of fermented feed on growth performance and muscle flavor substance of growing pigs
This study was conducted to investigate the effects of fermented feed on growth performance and muscle flavor substance of growing pigs.80 crossbred growing pigs(D×L×Y)with an average initial body weight of(59±0.3)kg were randomly divided into 2 treatments,5 replicates for each treatment and 8 pigs for each repeat.The pigs in control group were fed with basal diet and the pigs in fermented feed group were fed with 90%basal diet and 10%fermented feed.The experiment lasted 70 d.The results showed that:(1)Compared with control group,fermented feed significantly increased the final body weight,daily weight gain(P<0.05)and decreased the feed:gain(F/G)ratio(P<0.05).The body weight increased by 4.2%and daily weight gain increased by 6.2%respectively compared with control group.And the F/G ration was decreasing about 9.6%.(2)Compared with control group,fermented feed group showed a significant increase in intramuscular fat contents,marble score,and decrease in dropping loss and shear force(P<0.05).(3)Compared with control group,fermented feed significantly increased the contents of monounsaturated fatty acid(increasing about 5.2%),polyunsaturated fatty acid(increasing about 8.5%)and flavor amino acid(increasing about 11.5%),and significantly decreased the saturated fatty acid(decreasing about 4.2%)contents(P<0.05).The results indicated that fermented feed had significant ability to improve muscle flavor through regulating flavor amino acid and fatty acid contents.
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