土塘或生物絮团技术对罗非鱼育肥期脂质特征及代谢参数的影响

Q3 Agricultural and Biological Sciences Acta Scientiarum. Biological Sciences Pub Date : 2023-07-26 DOI:10.4025/actascibiolsci.v45i1.64475
E. G. Durigon, J. Uczay, N. C. Peixoto, Samuel Marasca, Thamara Luísa Staudt Schneider, L. Maurer, T. Emanuelli, R. Lazzari
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引用次数: 0

摘要

罗非鱼是一种极具生长潜力的鱼类。它的生产来自半集约化系统,如土池(EP)。最近,生物絮团技术(BFT)成为加强鱼类生产的一种选择。本研究的目的是比较EP和BFT饲养的罗非鱼的脏体指标、生化参数和化学成分。鱼生长150天,初始重量为2 g,最终重量为780 g。然后,采集组织器官,测定脏器指标,分析生化参数、脂肪酸和近似成分。EP养殖的罗非鱼胴体产量高于BFT养殖。生产系统对鱼片产量没有影响。在BFT中饲养的罗非鱼其他脏体参数较高。EP法饲养的罗非鱼鱼片中粗蛋白质和脂肪含量较高。在两种生产系统中,体脂谱没有差异。肉仔鱼的肌肉中葡萄糖和氨的浓度较高,肝脏中氨基酸的浓度较高。EP饲养的鱼肝脏乳酸浓度高于BFT饲养的鱼。总之,生产系统改变了鱼类的新陈代谢。该生物絮团含有相当数量的脂肪酸,可在该系统的罗非鱼饲料配方中加以考虑。
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Lipid profile and metabolic parameters of tilapia in the finishing phase in earth ponds or using biofloc technology
Tilapia is a species with great growth potential. Its production comes from a semi-intensive system, such as earthen ponds (EP). Recently, biofloc technology (BFT) appears as an option to intensify fish production. The objective of this work was to compare the organosomatic indices, biochemical parameters, and chemical composition of tilapia reared in EP and BFT. Fish were grown for 150 days, with an initial weight of ≅ 2 g and a final weight of ≅ 780 g. Thereafter, tissues and organs were collected to determine organosomatic indices and analyze biochemical parameters, fatty acid, and proximate composition. The carcass yield was higher for tilapia reared in EP than BFT. The production system did not affect the fish fillet yield. The other organosomatic parameters were higher for tilapia reared in BFT. Tilapia reared in EP showed higher content of crude protein and lipids in the fillet. In both production systems, there was no difference in the body lipid profile. Fish in BFT showed a higher concentration of glucose and ammonia in the muscle and amino acids in the liver. Fish reared in EP showed a higher concentration of lactate in the liver compared to those in BFT. In conclusion, the production system alters the metabolism of fish. The biofloc has a considerable amount of fatty acids, which can be considered in the formulation of diets for tilapia in this system.
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来源期刊
Acta Scientiarum. Biological Sciences
Acta Scientiarum. Biological Sciences Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)
CiteScore
1.00
自引率
0.00%
发文量
45
审稿时长
38 weeks
期刊介绍: The journal publishes original articles in all areas of Biological Sciences, including anatomy, bacteriology, molecular biology, biochemistry, botany, cytology and cell biology, animal behavior, ecology, limnology, embryology, and histology, morpho-physiology, genetics, microbiology, parasitology and zoology.
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