广西水牛乳脂肪酸四季变化规律的研究

doi:10.16431/j.cnki.1671-7236.2018.06.017

摘要/Abstract

摘要：

为了研究不同季节对水牛乳脂肪酸组成的影响，试验选取春、夏、秋、冬4个季节广西地区生鲜水牛原乳720份，采用气相色谱法测定水牛原乳脂肪酸组成和含量，以分析水牛乳脂肪酸四季的变化规律。结果显示，水牛原乳共检出38种脂肪酸，除C13：0、C15：0、C16：0和C20：4n6外，季节对其他脂肪酸含量均有显著影响（P<0.05）；多不饱和脂肪酸（PUFA）总含量在四季差异不显著（P>0.05），冬季短链脂肪酸（SCFA）总含量显著高于其他季节（P<0.05），夏季长链脂肪酸（LCFA）总含量和单不饱和脂肪酸（SUFA）总含量均显著高于其他季节（P<0.05），而夏季中链脂肪酸（MCFA）总含量和饱和脂肪酸（SFA）总含量均显著低于其他季节（P<0.05）；夏季ω6系列脂肪酸含量显著高于冬季（P<0.05），春、秋两季ω3系列脂肪酸总含量显著高于夏、冬季节（P<0.05）；ω6与ω3系列脂肪酸比值在春季最低（4.43），其次是秋季和冬季，夏季ω6/ω3值最高（6.32）。由此可见，不同季节对水牛原乳脂肪酸组成有显著影响，欲优化脂肪酸组成应合理改善日粮结构并提高饲养管理水平。

关键词: 季节; 水牛乳; 脂肪酸

Abstract:

In order to study the effect of different seasons on the composition of milk fatty acids in buffalo,720 buffalo milk samples in Guangxi all the year round were selected,the composition and content of milk fatty acids in buffalo were determined by gas chromatography to analyze the seasonal changes of milk fatty acids in buffalo.The results showed that 38 kinds of fatty acids were detected in buffalo milk,except for C13:0,C15:0,C16:0 and C20:4n6,the seasons had significant influence on other fatty acids content (P<0.05).The total content of polyunsaturated fatty acids (PUFA) had no significant difference in the four seasons(P>0.05),the total content of short chain fatty acids (SCFA) in winter was significantly higher than other seasons (P<0.05),and the total content of long chain fatty acids (LCFA) and single unsaturated fatty acids (SUFA) in summer were significantly higher than other seasons (P<0.05),while the total content of medium chain fatty acid (MCFA) and saturated fatty acids (SFA) in summer were significantly lower than other seasons (P<0.05).The total content of omega-6 series fatty acids in summer were significantly higher than other seasons (P<0.05),the total content of omega-3 series fatty acids in spring and autumn were significantly higher than that of in summer and winter (P<0.05).The ratio of omega-6/omega-3 fatty acids was the lowest in spring (4.43),followed by autumn and winter,and the ratio of omega-6/omega-3 fatty acids was the highest in summer (6.32).Therefore,it could be seen that the effect of different seasons on the composition of milk fatty acids in buffalo was significant,the farm manager should improve the diet structure and raise the level of raising and management to optimize the composition of fatty acids.

Key words: season; buffalo milk; fatty acid

中图分类号:

S823.9⁺1

郭艳霞, 梁贤威, 梁辛, 彭开屏, 唐庆凤, 李孟伟, 李丽莉, 杨承剑. 广西水牛乳脂肪酸四季变化规律的研究[J]. 《中国畜牧兽医》, 2018, 45(6): 1556-1563.

GUO Yanxia, LIANG Xianwei, LIANG Xin, PENG Kaiping, TANG Qingfeng, LI Mengwei, LI Lili, YANG Chengjian. Study on Seasonal Variation of Milk Fatty Acid of Buffalo in Guangxi[J]. , 2018, 45(6): 1556-1563.

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