Effects of garlic oil on milk fatty acid profile and lipogenesis-related gene expression in mammary gland of dairy goats
文献类型： 外文期刊
作者： Zhu, Zhi 1 ; Hang, Suqin 1 ; Zhu, Honglong 1 ; Zhong, Sheng 2 ; Mao, Shengyong 1 ; Zhu, Weiyun 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Anim Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Anim Sci, Nanjing 210095, Jiangsu, Peoples R China
关键词： garlic oil;conjugated linoleic acid;lipogenesis-related gene;milk;goat
期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）
ISSN： 0022-5142
年卷期： 2013 年 93 卷 3 期
页码：
收录情况： SCI
摘要： BACKGROUND: Garlic oil (GO) has blood lipid-lowering effects. Milk fatty acid (FA) originates partly from plasma, and can be affected by the mammary lipogenesis. This study aimed to investigate GO effects on milk FA profile and mammary lipogenesis-related gene expression. Early-lactation goats were randomly allocated to four treatments with six goats each, and offered corn silage ad libitum and fixed amount of 0.79 kg day-1 dry matter (DM) concentrate mixed with GO (0, 0.57, 1.14, 1.71 g kg-1 DM) for 30 days consisting of 26-day adaptation. RESULTS: Intake of corn silage reduced (P=0.05) as GO level increased in the concentrate. Lipase activity and lactose content linearly increased, while non-esterified FA concentration quadratically decreased with increasing GO level (P=0.05). The proportions of short- and medium-chain (C14:0, C15:0 and C16:0) and saturated FA decreased, whereas C18, cis9 trans11 conjugated linoleic acid (c9t11 CLA), t10c12 CLA, monounsaturated and polyunsaturated FA, and some = C20 FA proportions increased in a linear manner with increasing GO level (P=0.05). The mRNA abundance of genes remained unchanged (P > 0.1) as GO level increased. CONCLUSION: Garlic oil altered milk FA profile and these effects may not be related to the mammary lipogenesis-related genes expression. (C) 2012 Society of Chemical Industry
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