养鱼营养对加州黄尾鱼蛋品质和脂肪酸组成的影响

IF 1.4 4区农林科学 Q3 FISHERIES

North American Journal of Aquaculture Pub Date : 2023-09-28 DOI:10.1002/naaq.10318

Li Sun Chin, Sahar Mejri, Paul S. Wills, Kevin Stuart, Mark Drawbridge

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引用次数: 0

摘要

加州黄尾鱼(CYT;背孢Seriola dorsalis)是连续产卵的动物，完全依靠它们的饮食来为它们的卵提供脂肪酸(FAs)等营养物质，以支持它们的早期发育。本研究的目的是确定商业饲粮是否可以在不影响鸡蛋品质和生化成分(特别是脂肪酸)的情况下替代新鲜水产品(FFP‐D)。2017年，一组(1雌性和2雄性)的种鱼被喂食配方参考饲料(REF‐D;生物的俄勒冈州)。该试验表明，至少有1雌2雄的黄尾鱼可以在一个水族箱中重复产卵，因此在2018年进行了重复饲料试验，将18条黄尾鱼分成6个重复水族箱，每个水族箱1雌2雄。3个槽饲喂FFP - D对照，另外3个槽饲喂商业饲粮(COM - D;品种高米INVE)。对于每个产卵事件，收集鸡蛋质量指标以及样品进行FA分析。2017年REF‐D处理产生的鸡蛋满足花生四烯酸(ARA)和二十碳五烯酸(EPA)的要求，并且具有与FFP‐D相当的鸡蛋计量参数，具有更高的活力和平均批量繁殖力。但二十二碳六烯酸(DHA)含量不足，且无槽重复。2018年的COM - D处理产生的蛋和油直径都很大，符合ARA和EPA的要求，但由于DHA水平不足，产卵和孵化成功率非常低。FFP - D处理产生的活力和批量繁殖率低于平均水平，无法满足大多数EFA要求，但它产生了最多的产卵事件。包括对照在内的所有试验处理均不能完全满足CYT亲鱼的营养需求。这些结果揭示了目前CYT种鱼日粮的重要数据，将有助于未来研究开发营养全面的日粮，特别是在EFAs方面。

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Influence of broodstock nutrition on egg quality and fatty acid composition in California Yellowtail (Seriola dorsalis)

Abstract California yellowtail (CYT; Seriola dorsalis ) are continuous spawners and rely entirely on their diet to supply nutrients like fatty acids (FAs) to their eggs to support early development. The objective of this study was to determine if commercial diets can replace fresh fishery products (FFP‐D) without compromising egg quality and biochemical composition, specifically FAs. In 2017, one group (1 female and two males) of broodstock was fed a formulated reference feed (REF‐D; Bio‐Oregon). This pilot experiment showed that it was possible for a minimum of one female and two male broodstock to spawn repeatedly in a tank which led to a replicated diet experiment in 2018 where 18 yellowtail broodstock were divided into six replicates tanks, with 1 female and 2 males per tank. Three tanks were fed a FFP‐D control and three tanks were fed a commercial diet (COM‐D; Breed‐M, INVE). For each spawn event, egg quality metrics were collected along with samples for FA analysis. The 2017 REF‐D treatment produced eggs that met arachidonic acid (ARA) and eicosapentaenoic acid (EPA) requirements and had comparable egg metric parameters as FFP‐D with higher viability and average batch fecundity. However, it had insufficient docosahexaenoic acid (DHA) and no tank replicates. The 2018 COM‐D treatment produced eggs with large egg and oil diameters and met ARA and EPA requirements but had very poor spawn and hatch success with insufficient DHA levels. The FFP‐D treatment produced below average viability and batch fecundity rates and was unable to meet most EFA requirements, but it yielded the greatest number of spawns events. None of the experimental treatments including the control were able to fully meet nutritional requirements of CYT broodstock. These results reveal crucial data about current CYT broodstock diets that would facilitate future research of developing nutritionally complete diets especially in terms of EFAs.

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来源期刊

North American Journal of Aquaculture 农林科学-渔业

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： The North American Journal of Aquaculture publishes papers on new research and practical experience in all areas of intensive and extensive fish culture. Topics include broodstock selection and spawning, nutrition and feeding, health and water quality, facilities and production technology, and the management of ponds, pens, and raceways. The journal will consider papers dealing with ways to improve the husbandry of any aquatic species—marine or freshwater, vertebrate or invertebrate—raised for commercial, scientific, recreational, enhancement, or restoration purposes that may be of interest to practitioners in North America. Its scope includes both basic and applied science, but applied scientific endeavors—including practical experiences, descriptive studies, and other nontraditional, but pertinent works—are emphasized.