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首页> 外文期刊>Turkish Journal of Veterinary and Animal Sciences >The effects of dietary conjugated linoleic acid (CLA) on fatty acid composition and key enzymes of fatty acid oxidation in liver and muscle of geese.
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The effects of dietary conjugated linoleic acid (CLA) on fatty acid composition and key enzymes of fatty acid oxidation in liver and muscle of geese.

机译：日粮共轭亚油酸（CLA）对鹅肝脏和肌肉中脂肪酸组成和脂肪酸氧化关键酶的影响。

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摘要

The objective of this study was to determine the influence of conjugated linoleic acid (CLA) on fatty acid composition and key enzymes of fatty acid oxidation in liver and muscle of geese. A total of 192 geese, 1-day-old, were randomly assigned to 1 of 4 dietary groups, and were fed for 56 days on diets containing 2.5% soyabean oil (group A, control group) or 2.0% soyabean oil with 0.5% CLA (group B), 1.0% soyabean oil with 1.5% CLA (group C), and 2.5% CLA (group D). Results revealed that geese fed with CLA had lower abdominal fat percentage (AFP) (P<0.01) when compared with the control. It was observed that dietary CLA levels had a significant effect on the body weight, weight gain, feed conversion rate (FCR) (P<0.05), and feed intake (P<0.01). Fatty acid composition showed a significant increase in the biologically active cis-9, trans-11 and trans-10, and cis-12 CLA isomers in both liver and muscle of geese fed CLA (P<0.01). Dietary CLA led to an increase (P<0.01) in saturated fatty acid (SFA) and a reduction in monounsaturated fatty acid (MUFA) (P<0.05) concentrations in both liver and muscle. Dietary CLA increased (P<0.05) acyl CoA oxidase (ACO) activity in the liver, but did not affect carnitine palmitoyltransferase-I (CPT-I) activity when compared with the control. CPT-I activity significantly increased by 2.5% dietary CLA in muscle, where ACO activity decreased at 1.5% CLA level. It is suggested that geese can successfully incorporate CLA in both liver and muscle, which can be beneficial in the human diet, through the provision of bioactive fatty acids with no detrimental effects on n-3 PUFA levels.
机译：这项研究的目的是确定共轭亚油酸（CLA）对鹅肝和肌肉中脂肪酸组成和脂肪酸氧化关键酶的影响。将1天大的192只鹅随机分配到4个饮食组中的1个中，并以含2.5％豆油（A组，对照组）或2.0％豆油和0.5％的饮食喂养56天CLA（B组），1.0％豆油，1.5％CLA（C组）和2.5％CLA（D组）。结果显示，与对照组相比，饲喂CLA的鹅的腹部脂肪百分比（AFP）较低（P <0.01）。观察到饮食中的CLA水平对体重，体重增加，饲料转化率（FCR）（P <0.05）和饲料摄入量（P <0.01）有显着影响。脂肪酸组成显示在饲喂CLA的鹅的肝脏和肌肉中，其生物活性cis-9，trans-11和trans-10和cis-12 CLA异构体显着增加（P <0.01）。饮食中的CLA导致肝脏和肌肉中饱和脂肪酸（SFA）的增加（P <0.01）和单不饱和脂肪酸（MUFA）浓度的减少（P <0.05）。与对照组相比，饮食中的CLA可增加（P <0.05）肝中的酰基CoA氧化酶（ACO）活性，但不影响肉碱棕榈酰转移酶I（CPT-1）的活性。肌肉中CPT-1的活性显着增加了2.5％的饮食CLA，而ACO活性在1.5％的CLA水平下降低了。提出通过提供对n-3 PUFA含量无不利影响的生物活性脂肪酸，鹅可以成功地将CLA掺入肝脏和肌肉中，这对人类饮食有益。

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