Şahin Dilek, Öz Meryem, Öz Ünal
Vocational School, Sinop University, 57000 Sinop, Turkey.
Fisheries Faculty, Sinop University, 57000 Sinop, Turkey.
Life (Basel). 2025 Jan 10;15(1):74. doi: 10.3390/life15010074.
In this study, the impact of leonardite as a feed additive in goldfish diets was examined, focusing on its potential to positively influence feed and water parameters, which are critical for achieving sustainable ornamental fish farming. In this study, goldfish were fed diets containing four different levels of leonardite (0%, 2%, 6%, 10%). The experiment was conducted in 12 tanks with 3 replicates per treatment and lasted for 3 months. The fish, which were provided from the Research, Production and Training Institute, with an average live weight of 0.947 ± 0.03 g and an average length of 1.12 ± 0.02 cm, were used. After 90 days, it was observed that the specific growth rates increased in correlation with the amount of leonardite in the diet, with a statistically significant difference identified ( < 0.05). In this study, which investigated the coloration of fish with leonardite added to the feed for the first time, it was determined that the color of the fish approached from yellow to orange as the amount of leonardite added to the feed increased ( < 0.05). Given the positive effects observed on pigmentation and growth in this study, it is recommended that further detailed investigations be conducted on leonardite, a natural, harmless, and cost-effective additive, using different fish species.
在本研究中，考察了腐殖酸作为金鱼饲料添加剂的影响，重点关注其对饲料和水质参数产生积极影响的潜力，这些参数对于实现可持续观赏鱼养殖至关重要。在本研究中，给金鱼投喂含有四种不同腐殖酸水平（0%、2%、6%、10%）的饲料。实验在12个水箱中进行，每个处理重复3次，持续3个月。使用的金鱼由研究、生产和培训研究所提供，平均活重为0.947±0.03克，平均体长为1.12±0.02厘米。90天后，观察到特定生长率与饲料中腐殖酸的含量呈正相关增加，差异具有统计学意义（<0.05）。在本首次研究添加腐殖酸饲料对鱼体色影响的实验中，确定随着饲料中腐殖酸添加量的增加，鱼的颜色从黄色接近橙色（<0.05）。鉴于本研究中观察到的对色素沉着和生长的积极影响，建议对腐殖酸这种天然、无害且经济高效的添加剂，使用不同鱼类进行进一步详细研究。
