Abstract:

In order to explore the deposition regularity of fatty acids in liver, Landes geese were used as the experimental subjects to overfeeding. The deposition regularity of saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids in fat geese during different feeding periods were determined. Results indicated that total fat of geese before overfeeding and after overfeeding for 1, 2, 3 and 4 weeks were 4.70%, 15.42%, 24.19%, 50.35% and 81.40%, respectively. A significant difference was observed among different overfeeding periods except the first 2 weeks (P＜ 0.05). The saturated fatty acid contents in total fat after overfeeding for 1, 2, 3 and 4 weeks were 1.96%, 2.08%, 3.82%, 8.20% and 14.78%, respectively, and there was a significant difference (P＜0.05) observed among them. The corresponding unsaturated fatty acid contents in total fat were 20.17%, 33.47%, 34.29%, 45.33% and 75.63%, with a significant difference (P＜0.05). This study suggests that an obvious increase of unsaturated fatty acids occurs in the late overfeeding period.

Key words: liver of fat goose, content of fatty acid, deposition