Verge-Mèrida Gerard, Barroeta Ana Cristina, Ferrer Carlos, Serrano Tània, Guardiola Francesc, Soler María Dolores, Sala Roser
Animal Nutrition and Welfare Service (SNiBA), Department of Animal and Food Sciences, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
Nutrition, Food Science and Gastronomy Department, Institut de Recerca en Nutrició i Seguretat Alimentària, Xarxa d'Innovació Alimentària, Universitat de Barcelona, 08921 Santa Coloma de Gramenet, Spain.
Animals (Basel). 2022 May 6;12(9):1198. doi: 10.3390/ani12091198.
The effects of dietary inclusion of soybean-sunflower and olive pomace acid oils on growth, digestibility and flesh composition were studied in European seabass. Eight diets were fed for 100 days (101.37 ± 0.33 g initial weight, mean ± SD), differing in the added fat source (25% fish oil, 75% experimental oil): S (crude soybean oil), SA (soybean-sunflower acid oil), O (crude olive pomace oil) or OA (olive pomace acid oil); 3 blends: S-O, S-OA, SA-OA at a 1:1 ratio; and a diet containing only fish oil (F) as a control. Animals fed OA showed the worst performance among dietary treatments, with the lowest weight, specific growth ratio, average daily gain and the highest feed conversion ratio (p < 0.01). In contrast, other diets including acid oils did not impair performance. Acid oil diets did not affect the apparent digestibility of dry matter, crude protein or total fatty acids (p > 0.05), but a lower digestibility of lipids and saturated fatty acids was observed (p < 0.001). Flesh composition and fatty acid profile were not affected by the high dietary free FA content (p > 0.05). Hence the results suggest that the studied acid oils may potentially be used in fish diets although further studies are needed.
在欧洲海鲈中研究了日粮中添加大豆 - 向日葵和橄榄果渣酸油对生长、消化率和鱼肉成分的影响。用八种日粮喂养100天（初始体重101.37±0.33克，平均值±标准差），添加的脂肪来源不同（25%鱼油，75%试验油）：S（粗大豆油）、SA（大豆 - 向日葵酸油）、O（粗橄榄果渣油）或OA（橄榄果渣酸油）；3种混合油：S - O、S - OA、SA - OA，比例为1:1；以及一种仅含鱼油（F）的日粮作为对照。在日粮处理中，饲喂OA的动物表现最差，体重、特定生长率、平均日增重最低，饲料转化率最高（p < 0.01）。相比之下，其他含酸油的日粮并未影响生长性能。酸油日粮对干物质、粗蛋白或总脂肪酸的表观消化率没有影响（p > 0.05），但观察到脂质和饱和脂肪酸的消化率较低（p < 0.001）。鱼肉成分和脂肪酸谱不受日粮中高游离脂肪酸含量的影响（p > 0.05）。因此，结果表明，尽管需要进一步研究，但所研究的酸油可能有潜力用于鱼类日粮。
