共查询到18条相似文献，搜索用时 187 毫秒
1.
大黄鱼仔、稚、幼鱼发育阶段的脂肪酸组成及其变化 总被引：11，自引：1，他引：10
研究了大黄鱼早期主要发育阶段（前仔鱼期、后仔鱼期、稚鱼、幼鱼）体内脂肪酸的组成及含量的变化规律,并重点比较了发病稚鱼与正常稚鱼的脂肪酸组成。用GC／MS法共检测到24种脂肪酸,且种类随发育而递增,其中饱和脂肪酸（SFA）12种,单不饱和脂肪酸（MUFA）6种,多不饱和脂肪酸（PUFA）6种。分析结果表明：大黄鱼鱼苗内源性营养阶段以饱和脂肪酸C14：0、C16：0及单不饱和脂肪酸C16：1、C18：1作为能量代谢的主要来源;必需脂肪酸C20：4（n-6）（AA）在鱼苗开口前就已存在,而DHA和EPA摄食后才被检测到,其含量受饵料种类的影响,DHA含量变化范围为7．26％～25．36％,EPA为3．41％～8．40％。与同期正常鱼苗相比,病鱼苗的主要脂肪酸DHA、EPA含量显著降低,DHA不足前者的1／3,而AA、C18：1、C18：2、C18：3含量和EPA／DHA的比值显著增加,分别是前者的1．5—3倍。导致稚鱼阶段“胀鳔病”发生的内在原因可能是DHA和EPA的缺乏以及AA偏高。研究结果为预防“胀鳔”鱼苗的发生提供了理论依据。 相似文献
2.
紫海胆黄基本营养成分的分析与评价 总被引：1，自引：0，他引：1
为了测定紫海胆黄中的营养成分,并对其营养价值进行系统分析及合理评价,采用国家标准的生化测定方法以及美国化学分析方法(AOAC)检测海胆黄中的水分、粗灰分、粗蛋白质、粗脂肪、总糖、氨基酸、脂肪酸及矿物质。结果显示:海胆黄粉中水分含量(5.29±0.02)%,粗灰分(8.69±0.03)%,粗蛋白质(60.36±0.04)%,粗脂肪(25.32±0.09)%,总糖含量(0.044±0.002)mg/100 g;共检出18种氨基酸,总含量(46.50±0.89)%;谷氨酸含量最高,为(5.57±0.11)%;必须氨基酸占总氨基酸的(37.75±0.01)%;主要的限制氨基酸是色氨酸和亮氨酸;药效氨基酸占氨基酸总量的46.86%;蛋白质氨基酸评分(AAS)0.8,化学评分(CS)0.5;必需氨基酸指数(EAAI)为77.86;共检出30种脂肪酸,EPA(二十碳五烯酸)+DHA(二十二碳六烯酸)含量(2.43±005)%;海胆黄富含钾、磷、钠、镁、铁、锌等矿物质元素;常量元素中,磷元素含量最高,为(1 432.27±8.91)mg/100 g;微量元素中,锌元素含量最高,为(13.13±0.09)mg/100 g。研究表明,海胆黄中蛋白质含量丰富,氨基酸种类多、比例合理,脂质含量高且富含EPA、DHA等多不饱和脂肪酸,矿物质含量丰富。 相似文献
3.
通过对波纹唇鱼肌肉氨基酸、脂肪酸等营养成分的测定和分析,评估和讨论其肉质的风味特征。结果表明,波纹唇鱼Cheilinus undulates的含肉率为71.5%,肌肉中粗蛋白、粗脂肪、粗灰分、水分的含量分别为18.98%、1.56%、1.23%、76.33%;测定的18种氨基酸总量为878.1mg/g(干重),4种鲜味氨基酸含量为355.3mg/g(干重),是其美味的主要因素。DHA和EPA的含量分别为2.00和9.51mg/g,DHA和EPA含量占脂肪酸总量的12.76%。 相似文献
4.
南海8种低值小杂鱼脂肪含量和脂肪酸组成分析 总被引：3，自引：0，他引：3
采用氯仿-甲醇法提取南海盛产的8种低值小杂鱼肌肉、鱼头、内脏中的粗脂肪,利用气相色谱分析其脂肪酸的组成。结果表明,低值小杂鱼头部粗脂肪含量为2.7%～9.7%,内脏粗脂肪含量为2.9%～6.2%,肌肉部分粗脂肪含量为2.0%～8.5%;不同低值小杂鱼的脂肪酸组成基本相同,但其含量有所差异,饱和脂肪酸含量最高,都在40%以上,内脏粗脂肪中的饱和脂肪酸含量较头部和肌肉中的含量高;多不饱和脂肪酸含量差异较大,粗脂肪含量较高的鱼中多不饱和脂肪酸的含量较低;不同鱼种不同部位的粗脂肪中EPA、DHA含量有所差异。蓝圆鲹的头部粗脂肪中DHA和EPA最高,含量达到28.4%,而双带海鲱鲤内脏粗脂肪中的EPA和DHA含量仅为7.26%。 相似文献
5.
点带石斑鱼的肌肉营养成分分析 总被引：9，自引：0，他引：9
点带石斑鱼(Epinephelus malabaricus)的含肉率为74.1%,肌肉中粗蛋白、粗脂肪、粗灰分和水分的含量分别为19.14%、1.41%、0.99%和76.63%;18种氨基酸总量为21.85%(占鲜样),其中人体必需的8种氨基酸含量为8.87%,占氨基酸总量的40.59%,4种鲜味氨基酸含量为8.53%.其氨基酸构成比例符合FAO/WHO标准.必需氨基酸指数(EAAI)为103.DHA和EPA含量丰富,占脂肪酸总量的21.88%. 相似文献
6.
为确定母本棕点石斑鱼、杂交“金虎斑”和杂交珍珠龙胆的肌肉营养成分并比较其差异，实验采用常规方法，依据国家标准对棕点石斑鱼、杂交“金虎斑”及珍珠龙胆肌肉中的水分、蛋白、粗脂肪和灰分含量以及氨基酸、脂肪酸和10种矿物元素的组成与含量进行测定和评价。结果显示，3种石斑鱼肌肉中粗蛋白含量分别为19.0%、20.2%和16.8%；3种石斑鱼氨基酸总量、必需氨基酸总量、必需氨基酸指数、鲜味氨基酸总量分别为(18.10%、18.53%、16.01%)，(7.52%、7.70%、6.32%)，(88.20、84.80、88.30)和(6.92%、7.13%、6.10%)；3种石斑鱼肌肉中粗脂肪含量分别为3.0%、4.2%和2.4%，其中珍珠龙胆DHA+EPA的含量为24.02%，杂交“金虎斑”DHA+EPA的含量为23.56%，棕点石斑鱼DHA+EPA的含量为22.76%；5种常量元素Na、K、Ca、Mg、P和5种微量元素Fe、Mn、Cu、Zn、Se均有检出。研究表明，棕点石斑鱼、杂交“金虎斑”及珍珠龙胆可以为人类提供丰富的蛋白质、脂肪、无机盐和矿物元素，是具有较高食用价值的优良海水养殖品种。其中杂交“金虎斑”在一些营养指标中明显高于母本棕点石斑鱼。 相似文献
7.
本研究采用国标方法分析了温州市珊溪水库鳙(Aristichthys nobilis)肌肉的基本营养成分(水分、粗脂肪、粗蛋白质和灰分)、氨基酸、脂肪酸及矿物质等含量。研究表明4龄和6龄温州市珊溪水库鳙肌肉中(鲜样)水分、粗蛋白、粗脂肪和灰分的含量分别为(78.74±0.98)%和(78.84±1.16)%、(16.87±0.86)%和(16.50±0.80)%、(1.35±0.66)%和(1.36±0.83)%、(1.65±0.82)%和(1.76±1.47)%。鳙肌肉中18种氨基酸总量分别为(17.90±1.50)%和(16.87±0.86)%,其中,必需氨基酸占总氨基酸比值分别为41.38%和41.46%,4种鲜味氨基酸总量分别为8.24%和7.75%。温州市珊溪水库鳙肌肉的氨基酸种类齐全,比例适宜,第一限制性氨基酸为色氨酸。温州市珊溪水库鳙肌肉中检测出23种脂肪酸,多不饱和脂肪酸含量较其他淡水鱼丰富,EPA+DHA含量在22.69%和22.24%之间。本研究可为温州市珊溪水库鳙的营养价值进行了全面评估并对人类合理膳食营养提供参考。 相似文献
8.
9.
《渔业科学进展》2016,(5)
以18日龄的牙鲆(Paralichthys olivaceus)稚鱼为研究对象,通过11 d的生长实验,研究了添加不同比例的微藻粉替代鱼油对牙鲆稚鱼生长、存活率和脂肪酸组成的影响。以鱼油组(FO)为对照组,以裂壶藻粉(Schizochytrium sp.)、微绿球藻粉(Nannochloropsis sp.)和橄榄油替代不同比例的鱼油,配制成5组等氮等能的实验饲料,分别命名为鱼油组(FO),50%混合替代组(M50)、100%混合替代组(M100)、100%裂壶藻橄榄油替代组(S100)、100%微绿球藻橄榄油替代组(N100)。结果显示,微藻粉替代鱼油对牙鲆稚鱼的生长无显著影响;含有裂壶藻的各饲料组(M50、M100、S100)成活率显著高于FO组和N100组(P?0.05);微藻粉替代鱼油不影响牙鲆稚鱼主要脂肪酸的组成;Person相关性分析发现,C14:0、C16:1n-7、C18:2n-6、C20:0、C18:3n-3、C22:0、C20:4n-3、EPA、C22:5n-6和DHA的百分含量均与其饲料中的百分含量呈显著正相关(P0.05);总饱和脂肪酸、总单不饱和脂肪酸、n-3多不饱和脂肪酸的百分含量以及DHA/EPA比率均与其饲料组成表现出显著正相关(P0.05)。综上所述,微藻作为脂肪源替代鱼油完全可以满足牙鲆稚鱼的生长和发育,各种脂肪酸均可以被牙鲆稚鱼充分消化和吸收,并且添加两种微藻后提高了稚鱼的DHA含量和DHA/EPA比率,与鱼油对照组相比显著提高了牙鲆稚鱼的成活率。因此,以微藻替代鱼油在牙鲆稚鱼的培育中是可行的。 相似文献
10.
为了解菊黄东方鲀苗种培育阶段脂肪酸的变化规律,采用生化分析方法对菊黄东方鲀的开口前仔鱼(3日龄)、后期仔鱼(10日龄)和稚鱼(21日龄)的脂肪酸组成和含量进行了检测和分析。结果显示,菊黄东方鲀鱼苗总脂的相对质量分数随苗种发育而呈现直线下降的趋势(P0.05),从开口前仔鱼的26.73%急剧下降至稚鱼的11.70%。菊黄东方鲀苗种培育各阶段的干样中检出8种饱和脂肪酸(SFA)、7种单不饱和脂肪酸(MUFA)和12种多不饱和脂肪酸(PUFA)。其中C18:1n9c的相对质量分数均为最高(22.36%~32.01%),呈现中间高、前后低的趋势;C16:0的质量分数较高(13.66%~17.34%),呈现中间低、前后高的趋势;C18:0在稚鱼中的相对质量分数(13.57%)显著高于开口前仔鱼(8.59%)和后期仔鱼(7.91%);C22:6n3(DHA)的质量分数呈现直线下降趋势,从开口前仔鱼的22.21%急剧下降至稚鱼的2.61%;C20:5n3(EPA)的相对质量分数随苗种发育而显著升高,从开口前仔鱼的3.53%升高至稚鱼的7.83%。SFA的相对质量分数随苗种发育呈现中间低、前后高的趋势,而MUFA的变化趋势正好相反。开口前仔鱼阶段PUFA的相对质量分数(39.06%)显著高于后期仔鱼和稚鱼(分别为32.38%和34.03%)。稚鱼阶段的SFA(34.53%)、MUFA(31.43%)和PUFA(34.03%)三者之间相对趋于均衡。开口前仔鱼的∑n3PUFA/∑n6PUFA(6.38)显著高于后期仔鱼(2.54)和稚鱼(2.21)。菊黄东方鲀苗种培育的各阶段实际质量分数最高均为C18:1n9c(22.36~32.01 mg/g),实际质量分数较高的有C16:0、C18:0、C16:1、C20:5n3(EPA)和C22:6n3(DHA)。除C18:3n3、C20:4n6和C20:5n3(EPA)外,其它各单个脂肪酸的实际质量分数随苗种发育均显著降低。值得注意的是,C22:6n3(DHA)的实际质量分数呈现直线下降趋势,从开口前仔鱼的57.22 mg/g急剧下降至稚鱼的2.82 mg/g。研究表明,菊黄东方鲀仔鱼开口摄食后的发育仍需要消耗大量的n3PUFA(特别是DHA),鱼体内脂肪酸组成(特别是n3PUFA的质量分数)与饵料密切相关。建议在菊黄东方鲀苗种培育中后期及时增加富含n3PUFA(特别是DHA)饵料的投喂量,如海水桡足类、藻类强化过的卤虫幼体,以缓解苗种中后期培育成活率低下的问题。 相似文献
11.
The dietary requirements of Penaeus monodon for eicosapentaenoic (20:5n‐3; EPA) and docosahexaenoic (22:6n‐3; DHA) acids were examined. These requirements were examined when dietary levels of linoleic (18:2n‐6; LOA) and linolenic acids (18:3n‐3; LNA) were also provided at previously established optimal levels of 14 and 21% respectively of the total lipid fatty acids. A 5 × 5 factorial design was used with incremental amounts (0, 4, 8, 12 and 16% of total fatty acids) of EPA and/or DHA. An additional diet containing cod‐liver oil was provided as a reference diet. The total lipid content of all of the 25 treatments and reference diets was maintained at the same level of 75 g kg?1. Growth of prawns fed with the reference diet after 50 days was 244 ± 21%. The greatest response to singular additions of EPA or DHA was with a 12% inclusion of either fatty acid, resulting in 287 ± 21 and 293 ± 18% weight gain, respectively. Growth was generally better when combinations of EPA and DHA were used, the optimal combination being EPA 4% and DHA 4%, resulting in 335 ± 25% weight gain. Addition of high levels of either of the highly unsaturated fatty acids (HUFA) in the diet had a negative effect on growth. Digestibilities of the total neutral lipid and specific fatty acids were examined during the growth trials. The digestibility of total neutral lipid was usually higher when either or both HUFA were present, however there were few significant differences between treatments that contained either or both HUFA. Following the growth trials, digestive glands (DG) of prawns fed with the various diets were analysed to determine the total lipid content and fatty acid composition. Total lipid in the digestive gland increased with the inclusion of DHA, but was not significantly affected by the addition of EPA. The fatty acid composition of the digestive gland lipid generally reflected that of the diet. However, the maximum retention of EPA (11.1% of total DG fatty acids) and DHA (10.7% of total DG fatty acids), was not directly proportional to the amount of either fatty acid present in the diet. These results demonstrate that both EPA and DHA have considerable growth promoting capacity. This growth promoting capacity is enhanced when an optimal balance of both fatty acids are incorporated into the diet. 相似文献
12.
虎斑乌贼受精卵卵黄营养成分分析 总被引：3，自引：3，他引：0
本实验对虎斑乌贼受精卵卵黄的营养成分进行分析,旨在探讨其幼体的营养需求量,为其幼体配合饲料研制提供参考数据。随机选取大约800个虎斑乌贼受精卵的卵黄,采用国家标准方法测定其水分、灰分、粗蛋白质、粗脂肪、氨基酸、脂肪酸和矿物元素含量。结果表明:1)虎斑乌贼受精卵卵黄中粗蛋白质含量为76.33%(干重基础);总氨基酸(TAA)和必需氨基酸(EAA)含量分别为71.22%和32.38%(干重基础),EAA/TAA为45.46%,氨基酸中以谷氨酸(Glu)含量最高(9.97%),必需氨基酸中亮氨酸(Leu)含量最高(7.58%)。2)其粗脂肪含量12.71%(干重基础);共检出17种脂肪酸,包括8种饱和脂肪酸(SFA)、5种单不饱和脂肪酸(MUFA)和4种多不饱和脂肪酸(PUFA),SFA、MUFA和PUFA分别占脂肪酸总量的43.47%、7.54%和49.25%,其中以DHA含量最高,达32.80%,EPA含量为7.70%,DHA/EPA为4.26。3)检测出Na、K、Ca、Mg、Sr、Mn、Fe、Cu、Zn、Al和As 矿物元素,微量元素中富含Zn、Al和Fe,含量分别为 0.77、0.71和0.43 mg/kg(鲜重基础)。由此可见,卵黄具有高蛋白、低脂肪,富含n-3PUFA的特点;虎斑乌贼幼体饲料中蛋白质需求量参考值为76.33%;氨基酸需求量参考值,如赖氨酸(Lys)为5.49%,蛋氨酸(Met)为2.63%;脂肪的需求量参考值为12.71%,DHA为4.17%,EPA为0.98%;微量元素需求量参考值,如Zn为2.77 mg/kg,Cu为0.19 mg/kg(干重基础)。 相似文献
13.
深水网箱和池塘养殖凡纳滨对虾肌肉营养成分的比较分析 总被引：2，自引：0，他引：2
对深水网箱和池塘养殖凡纳滨对虾(Litopenaeus vannamei)肌肉常规营养成分、氨基酸和脂肪酸质量分数进行了比较分析。结果显示:1)网箱养殖对虾肌肉粗蛋白质量分数显著高于池塘养殖(P0.05),而水分、粗脂肪和粗灰分质量分数无显著差异(P0.05);2)肌肉中检测到18种常见氨基酸,网箱养殖对虾肌肉氨基酸总量(TAA)、天门冬氨酸(Asp)、异亮氨酸(Ile)、精氨酸(Arg)和脯氨酸(Pro)质量分数显著高于池塘养殖(P0.05),而必需氨基酸(EAA)、半必需氨基酸(HEAA)、鲜味氨基酸(DAA)和虾味氨基酸(PFAA)两者无显著差异(P0.05);3)肌肉中检测到30种常见脂肪酸,两者的饱和脂肪酸(SFA)、单不饱和脂肪酸(MUFA)、多不饱和脂肪酸(PUFA)、n-3多不饱和脂肪酸(EPA和DHA)质量分数差异显著(P0.05),以网箱养殖对虾较高;两者的棕榈酸(C16∶0)质量分数最高,且网箱养殖对虾EPA+DHA质量分数是池塘养殖的1.90倍。结果表明,网箱养殖对虾营养成分要优于池塘养殖,具有较高的营养价值。 相似文献
14.
Nutritional comparison in muscle of wild,pond and factory cultured Japanese flounder (Paralichthys olivaceus) adults 
下载免费PDF全文
下载免费PDF全文 Muscle proximate composition, amino acid profiles, fatty acid compositions and selected minerals of wild, pond and factory cultured Japanese flounder adults were compared in this study to elucidate their nutritive values and dietary nutrition requirements. Wild and pond cultured Japanese flounder flesh had higher crude proteins, but crude lipid contents of factory cultured fish were 3.8~4.0 fold greater. Major amino acids in Japanese flounder were aspartic acid, glutamic acid and lysine. Wild fish had higher levels of total amino acids, essential amino acids, nonessential amino acids and half‐essential amino acids and the contents in pond cultured samples were similar. Arachidonic acids (ARA), eicosapentaenoic acids (EPA), docosahexaenoic acids (DHA), polyunsaturated fatty acids (PUFA), DHA + EPA and n–3 PUFA in wild Japanese flounder were significantly higher than that in factory cultured fish, whereas fatty acid levels were close between pond cultured and wild fish. Japanese flounder were rich in zinc, iron and selenium, but poor in copper, chromium and nickel. Results indicated wild Japanese flounder had higher nutritional value and better meat quality, but the nutritional compositions of pond cultured fish were close to wild Japanese flounder, which suggested that pond culture of Japanese flounder offers broad application prospects. 相似文献
15.
半滑舌鳎不同家系肌肉中脂肪酸含量的分析 总被引：3，自引：1，他引：2
为了研究半滑舌鳎(Cynoglossus semilaevis)不同家系肌肉中脂肪酸的组成与含量,并选育出高营养品系的半滑舌鳎家系,用气相色谱法对同一养殖环境中的半滑舌鳎15个不同家系(164个样本)肌肉中的脂肪酸的组成和含量进行了检测和比较分析,同时对高EPA、DHA、EPA+DHA含量的家系进行筛选,并研究了半滑舌鳎性别与EPA、DHA含量的关系。结果表明:(1)15个家系肌肉中脂肪酸种类没有区别,但脂肪酸的组成和含量存在若干差异。其特征均为多不饱和脂肪酸(PUFA)饱和脂肪酸(SFA)单不饱和脂肪酸(MUFA)。PUFA以ω-3系脂肪酸为主,且ω-3系脂肪酸与ω-6系脂肪酸比值达到4.16~5.03,其中的2种重要ω-3系脂肪酸EPA和DHA在15个家系中均具有显著性差异,且DHA含量远大于EPA含量;筛选出了3个高EPA、DHA、EPA+DHA含量家系,分别为F13012、F13023及F13031。(2)EPA的含量与半滑舌鳎性别不具有显著性相关关系。本研究对于选育半滑舌鳎优良品种家系具有重要意义。 相似文献
16.
Xiao‐Qiang Gao Fan Fei Zhi‐Feng Liu Chang‐Tao Guan Bin Huang Bao‐liang Liu Yu‐dong Jia Zheng‐Long Guo Yao‐Hui Wang Lei Hong 《Aquaculture Research》2019,50(2):439-448
The fatty acid accumulation in broodstock influences the fecundity of spawners as well as egg quality. A comprehensive understanding of the lipid and fatty acid changes in broodstock during the reproductive period can increase our knowledge of the nutritional requirements in artificial breeding programs. The study assessed the lipid and fatty acid compositions of muscle, liver and ovary of American shad at different stages of reproductive development under reared conditions. The results indicated that there were significant differences in lipid content among ovary, liver and muscle. Mean total lipid levels in ovary, liver and muscle were 15.92%–10.87%, 13.62%–6.89%, 10.39%–6.11% respectively. During the development season, the total lipid content in muscle in stages V and VI were significantly lower than those in stages II and III. The total lipid content in liver in stages IV, V and VI was significantly lower than in stages II and III, whereas the total lipid content in the ovary increased significantly as the gonad developed and reached its highest value at stage V. From II to VI stage, the liver content of docosahexaenoic acid (DHA) decreased and the ovarian content of DHA increased, whereas the content of eicosapentaenoic acid (EPA) remained relatively constant. The content of C16:0 and C18:1n‐9 decreased in muscle and liver, but significantly increased in ovary. It is therefore suggested that the lipids were preferentially transferred from muscle and liver to ovary beginning in stage IV as the gonad matured. At stage IV, the lipid transfer accelerated, and saturated and unsaturated fatty acids, such as C16:0, C18:1n‐9, DHA, EPA and arachidonic acid, were selectively transferred to and conserved in ovaries. 相似文献
17.
俄罗斯鲟鱼卵与西伯利亚鲟鱼卵的营养成分比较 总被引：3，自引：0，他引：3
采用生化方法分析了俄罗斯鲟(Acipenser gueldenstaedti)和西伯利亚鲟(Acipenser baerii)鱼卵的营养成分,并对两者的营养品质进行了比较。结果表明:这两种鱼卵的水分含量平均值为62.83%～64.88%,粗蛋白平均含量为20.38%～20.77%,粗脂平均含量为10.41%～13.58%。统计分析表明,俄罗斯鲟鱼卵的粗脂肪含量显著低于西伯利亚鲟鱼卵,而粗蛋白、水分和灰分含量略高于西伯利亚鲟鱼卵。俄罗斯鲟鱼卵和西伯利亚鲟鱼卵的氨基酸组成一致,均含有17种氨基酸,必需氨基酸指数(EAAI)分别为50.66和44.43。两种鲟鱼卵的脂肪酸中,均以C16∶0、C18∶2n6c和DHA为主要脂肪酸,三者总的质量分数达50%左右;而二十碳五烯酸(EPA)与二十二碳六烯酸(DHA)的总量俄罗斯鲟鱼卵高于西伯利亚鲟鱼卵,在两种鱼卵中含量分别为19.47%和16.83%。分析结果表明,两种鲟鱼卵均含有丰富的各种营养成分,但从粗蛋白、必需氨基酸(EAA)、DHA和n3PUFA含量来看,俄罗斯鲟鱼卵的营养价值优于西伯利亚鲟鱼卵。 相似文献
18.
Farmed eels had lower levels of arachidonic acid (20:4 n‐6) (ARA) and higher ratios of eicosapentaenoic acid (20:5 n‐3) (EPA):ARA compared to wild European eels collected from the Baltic Sea and southern Norwegian coast. Eels fed a formulated feed (JD) with a distribution of essential fatty acids (EFA) resembling wild European eel were sampled after 0, 5, 10, 14 and 44 weeks of feeding to examine changes in fatty acid composition (FAC) in ovaries, visceral fat and muscle. The results showed a slow but steady incorporation of EFA. Lipids are incorporated in the oocytes early in oogenesis, and the leading cohort of oocytes is rich in lipid droplets before the onset of vitellogenesis. This indicates that feeding with optimized broodstock feeds should start early to allow the incorporation of EFA in the first cohort of oocytes. At least 14 weeks of feeding is required to change lipid EFA in broodstock eel to resemble EFA in the diet or in wild fish. After 44 weeks of feeding, ARA was significantly higher in the neutral lipids of ovaries (1.9%) compared to visceral fat (1.2%) or muscle (1.0%). EPA:ARA ratios decreased two‐ to threefold in all tissues examined during that time. ARA and docosahexaenoic acid (22:6 n‐3) (DHA) had accumulated in ovarian polar lipids. 相似文献