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博碩士論文 etd-0202113-121346 詳細資訊
Title page for etd-0202113-121346
論文名稱
Title
飼料α-次亞麻油酸與亞麻油酸比例對海鱺體脂肪 脂肪酸置換的影響
α-Linolenic acid and linoleic acid ratio on wash-out of tissue fatty acids in cobia (Rachycentron canadum)
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
83
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2013-01-08
繳交日期
Date of Submission
2013-02-02
關鍵字
Keywords
ALA/LA比例、海鱺、置換作用、不飽和脂肪酸、魚油
cobia (Rachycentron canadum), fish oil, unsaturated fatty acids, wash-out, ALA/LA ratio
統計
Statistics
本論文已被瀏覽 5672 次,被下載 1273
The thesis/dissertation has been browsed 5672 times, has been downloaded 1273 times.
中文摘要
魚體脂肪酸組成會受到飼料脂肪酸組成影響,植物油為油脂來源飼料會導致魚體的高度不飽和脂肪酸(highly unsaturated fatty acid, HUFA)含量下降,減低其營養價值,魚油置換(wash-out)則在使魚體的HUFA含量在短時間內恢復,然而很多因子會影響置換的效率。本研究目的在於探討飼料中α-次亞麻油酸(α-linolenic acid, ALA, C18:3n-3)與亞麻油酸(linoleic acid, LA, C18:2n-6)比例不同是否會影響海鱺置換及蓄積HUFA的能力。實驗分為十週成長實驗與八週置換實驗兩階段。成長實驗飼料為五組均為等氮等能量之飼料,其中四組為以棕櫚油、亞麻油及葵花油製作ALA/LA比例分別為0.1、0.5、1.0及2.0之飼料,並以魚油為油脂來源為控制組,五組飼料分別餵食海鱺。置換實驗為各組實驗飼料均換成全魚油飼料。成長實驗結束後,各植物油部分取代魚油處理組之成長表現均無負面影響,ALA/LA比例不同亦不影響海鱺的成長表現,魚體脂肪酸組成會受到ALA/LA比例所影響。成長實驗中餵飼低ALA/LA比例飼料會顯著(P<0.05)增加在置換實驗中魚體組織HUFA含量。成長實驗及置換實驗魚體血清中三酸甘油酯、膽固醇、高密度脂蛋白及低密度脂蛋白均無顯著差異。因此,飼料ALA/LA除影響海鱺體脂肪酸組成外,也影響其後HUFA置換,低ALA/LA有較好的置換效率。
Abstract
Effects of different dietary α-linolenic acid (ALA, 18:3n-3) to linoleic acid (LA, 18:2n-6) ratios on growth performance, tissue fatty acid composition, and subsequent finishing (wash-out) efficiency in cobia was evaluated. The ALA/LA ratios of experimental formulated to be between 0.1 and 2.0 by supplementing different levels of palm oil, linseed oil, and sunflower oil, and a fish oil diet was used as the control. The experiment was carried out with a 10 week growth-out period when the experimental diets were given and a subsequent finishing “wash out” period of 8 weeks. There was no significant difference in growth performance of cobia. The fish fed with diet with a lower ALA/LA ratio (hence receive more dietary LA) had significantly higher concentrations of DHA in the muscle at the end of the finishing period. Dietary ALA/LA ratio not only affected the fatty acid profile of the cobia in growth-out period, but also increased the efficiency of HUFA deposition in the subsequent wash out period.
目次 Table of Contents
中文摘要.................................................i
英文摘要.................................................ii
目錄.........................................................iii
表目錄.....................................................v
圖目錄.....................................................vi
附錄表.....................................................vii
文獻回顧.................................................1
前文.........................................................10
材料與方法.............................................12
結果.........................................................27
討論.........................................................54
結論.........................................................59
參考文獻.................................................60
附錄.........................................................73
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