鹅肥肝中脂肪酸沉积规律研究

Deposition Regularity of Fatty Acids in Livers of Fat Geese

以朗德鹅肥肝在填饲过程中脂肪酸沉积规律为对象,研究不同填饲周期饱和脂肪酸、单不饱和脂肪酸和多不饱和脂肪酸沉积的规律性。结果表明:鹅肥肝在填饲前、填饲1周、填饲2周、填饲3周、填饲4周的总脂肪含量分别为4.70%、15.42%、24.19%、50.35%、81.40%,除填饲1、2两周之间差异不显著外其他组间差异显著(P<0.05);饱和脂肪酸占总脂的比例分别为1.96%、2.08%、3.82%、8.20%、14.78%,饲喂1～4周间差异显著(P<0.05);不饱和脂肪酸占总脂的比例分别为20.17%、33.47%、34.29%、45.33%、75.63%,除第1周与第2周间无显著性差异外,其他组间差异显著(P<0.05),说明填饲后期不饱和脂肪酸水平显著增加。

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 （P0.05） 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 （P0.05）. This study suggests that an obvious increase of unsaturated fatty acids occurs in the late overfeeding period.