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| Effects of chitosan with different deacetylated degrees on growth, carcass characteristics and lipid metabolism in chicken |
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| Abstract: |
| To study the effects and mechanism of low molecular chitosan with different deacetylated degrees on performance, carcass characteristics and lipid metabolism in chicken, a total of 192 one-day-old chickens were randomly divided into 4 groups for 6 replicates of 8 birds each. Control group was fed with the basal diet, while the experimentalgroups were fed with the basal diet supplied with low molecular chitosan at the level of 0.15% with deacetylated degrees of 73%, 81% and 90% for 42 days. Results showed that chitosan had no influence on growth and feed utilization of chickens. However, the liver fat percent, abdominal fat rate and the concentrations of triglyceride and cholesterol in serum significantly impaired by supplementation of chitosan with deacetylated degree of 90%. The fatty acid synthase and malatedehydrogenase was not affected, while the lipoprotein lipase tended to increase by chitosan supplementation. The resultsindicated that addition of chitosan did not affect the growth and feedutilization. However, low molecular chitosan with high deacetylated degree significantly depressed fat utilization and body lipid deposit. Lipid catabolism might be one of the possible mechanisms to explain the decreased body lipid deposit. |
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