Effects of commercial feeds and frozen trash fish on growth and hematological parameters of juvenile silver arowana Osteoglossum bicirrhosum

IF 2.2 3区农林科学 Q2 FISHERIES

Aquaculture International Pub Date : 2024-11-15 DOI:10.1007/s10499-024-01732-9

Christian Fernández-Mendez, Giana Curto Utia, Raisa Ruiz Vasquez, Anai Flores Gonzales

{"title":"Effects of commercial feeds and frozen trash fish on growth and hematological parameters of juvenile silver arowana Osteoglossum bicirrhosum","authors":"Christian Fernández-Mendez, Giana Curto Utia, Raisa Ruiz Vasquez, Anai Flores Gonzales","doi":"10.1007/s10499-024-01732-9","DOIUrl":null,"url":null,"abstract":"<div>Silver arowana Osteoglossum bicirrhosum is a native species of the Amazon basin and presents opportunistic omnivorous habits with ichthyophagous preference. It is subjected to great fishing pressure for consumption and ornamental purposes. Fish farming for this fish is being developed, and one of the main difficulties is food availability for the different stages. This study assessed the effect of feeding with frozen trash fish and commercial feed on the growth and hematological parameters of juvenile silver arowana O. bicirrhosum. A total of 72 juveniles (74.2 ± 0.1 g) were randomly distributed into 12 net cages (6 fish per cage) and fed diets with different protein (P) and lipid (L) levels: frozen trash fish (52P:10L), and commercial tilapia (28P:4L), trout (40P:8L), and arapaima feed (50P:10L) with three replicates twice daily at a daily feeding rate of 6% of biomass for 90 days. At the end of the experiment, growth, hematological parameters, and cost per kilogram of weight gain were evaluated. The results revealed improved growth (P < 0.05) among fish fed with frozen trash fish (172.6 ± 26.9 g) and commercial arapaima feed (174.6 ± 48.8 g), in comparison with those fed commercial trout (120.5 ± 28.9 g) and tilapia feed (106.0 ± 37.1 g). Fish fed with frozen trash fish had lower daily feed intake (0.9 ± 0.1 g) and feed conversion ratio (0.8 ± 0.0), and greater hematocrit (36.2 ± 1.3%), erythrocyte sizes (348.7 ± 37.5 fL), total leukocyte (14.7 ± 0.3 × 103 µL−1), and lymphocyte levels (10.8 ± 1.1 × 103 µL−1) than juveniles that consumed the three commercial diets (P < 0.05). Feeding with frozen trash fish reduced (P < 0.05) the cost per kg of weight (USD 2.5) compared to feeding commercial diets for trout (USD 4.3) and tilapia (USD 4.8). The results show that feeding fresh frozen fish allows for healthy and less costly growth of juvenile silver arowana O. bicirrhosum.</div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aquaculture International","FirstCategoryId":"97","ListUrlMain":"https://link.springer.com/article/10.1007/s10499-024-01732-9","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"FISHERIES","Score":null,"Total":0}

引用次数: 0

Abstract

Silver arowana Osteoglossum bicirrhosum is a native species of the Amazon basin and presents opportunistic omnivorous habits with ichthyophagous preference. It is subjected to great fishing pressure for consumption and ornamental purposes. Fish farming for this fish is being developed, and one of the main difficulties is food availability for the different stages. This study assessed the effect of feeding with frozen trash fish and commercial feed on the growth and hematological parameters of juvenile silver arowana O. bicirrhosum. A total of 72 juveniles (74.2 ± 0.1 g) were randomly distributed into 12 net cages (6 fish per cage) and fed diets with different protein (P) and lipid (L) levels: frozen trash fish (52P:10L), and commercial tilapia (28P:4L), trout (40P:8L), and arapaima feed (50P:10L) with three replicates twice daily at a daily feeding rate of 6% of biomass for 90 days. At the end of the experiment, growth, hematological parameters, and cost per kilogram of weight gain were evaluated. The results revealed improved growth (P < 0.05) among fish fed with frozen trash fish (172.6 ± 26.9 g) and commercial arapaima feed (174.6 ± 48.8 g), in comparison with those fed commercial trout (120.5 ± 28.9 g) and tilapia feed (106.0 ± 37.1 g). Fish fed with frozen trash fish had lower daily feed intake (0.9 ± 0.1 g) and feed conversion ratio (0.8 ± 0.0), and greater hematocrit (36.2 ± 1.3%), erythrocyte sizes (348.7 ± 37.5 fL), total leukocyte (14.7 ± 0.3 × 10³ µL⁻¹), and lymphocyte levels (10.8 ± 1.1 × 10³ µL⁻¹) than juveniles that consumed the three commercial diets (P < 0.05). Feeding with frozen trash fish reduced (P < 0.05) the cost per kg of weight (USD 2.5) compared to feeding commercial diets for trout (USD 4.3) and tilapia (USD 4.8). The results show that feeding fresh frozen fish allows for healthy and less costly growth of juvenile silver arowana O. bicirrhosum.

查看原文本刊更多论文

商品饲料和冷冻杂鱼对银鱼幼鱼生长和血液学参数的影响

银龙鱼（Osteoglossum bicirrhosum）是亚马逊河流域的原生物种，有机会性杂食习性，喜食鱼类。出于食用和观赏目的，它承受着巨大的捕捞压力。这种鱼的养殖正在发展中，主要困难之一是不同阶段的食物供应。本研究评估了投喂冷冻杂鱼和商业饲料对银箭鱼幼鱼生长和血液学参数的影响。将 72 尾幼鱼（74.2 ± 0.1 g）随机分配到 12 个网箱中（每个网箱 6 尾鱼），投喂不同蛋白质（P）和脂质（L）水平的饲料：冷冻垃圾鱼（52P:10L）和商品罗非鱼（28P:4L）、鳟鱼（40P:8L）和银鲫饲料（50P:10L），每天两次，每次三个重复，日投喂量为生物量的 6%，持续 90 天。实验结束时，对生长、血液学参数和每公斤增重成本进行了评估。结果显示，与投喂商品鳟鱼饲料（120.5 ± 28.9 克）和罗非鱼饲料（106.0 ± 37.1 克）的鱼类相比，投喂冷冻杂鱼饲料（172.6 ± 26.9 克）和商品鲈鱼饲料（174.6 ± 48.8 克）的鱼类生长速度更快（P < 0.05）。喂食冷冻垃圾鱼的鱼的日采食量（0.9 ± 0.1 克）和饲料转化率（0.8 ± 0.0）较低，血细胞比容（36.2 ± 1.3%）、红细胞大小（348.7 ± 37.5 fL）、白细胞总数（14.7 ± 0.3 × 103 µL-1）和淋巴细胞水平（10.8 ± 1.1 × 103 µL-1）（P < 0.05）。与投喂鳟鱼（4.3 美元）和罗非鱼（4.8 美元）的商品饲料相比，投喂冷冻杂鱼可降低每公斤重量的成本（2.5 美元）（P < 0.05）。结果表明，投喂新鲜冷冻鱼能使银鲫幼鱼健康成长，且成本较低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Aquaculture International 农林科学-渔业

CiteScore

5.10

自引率

6.90%

发文量

204

审稿时长

1.0 months

期刊介绍： Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture. The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more. This is the official Journal of the European Aquaculture Society.