Growth performance, carcass composition, and digestive enzyme activity of Labeo fimbriatus in tanks provided with feed and periphyton substrate in two orientations

IF 1.3 Q3 FISHERIES

Journal of Applied Aquaculture Pub Date : 2021-08-04 DOI:10.1080/10454438.2021.1957054

Gangadhar Barlaya, H. Umalatha, G. Hegde, Banahalli Sriramreddy Ananda Kumar, C. H. Raghavendra

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引用次数: 4

Abstract

ABSTRACT The effect of substrate orientation on the growth of Labeo fimbriatus in periphyton-based culture system was evaluated through an on-farm growth trial conducted for 90 days in 4x4x1.2 m soil-based, fertilized out-door cement tanks. The treatments consisted of triplicate tanks receiving no feed (NF), receiving feed (F), and those receiving sugarcane bagasse as periphyton substrates vertically suspended in the water column (SV) or applied directly to the tank bottom (SB). Bagasse used at 2 t/ha was hung vertically in SV tanks, while it was spread at the tank bottom in SB. Fish in F treatment tanks were fed daily with a 25% crude protein diet. No significant effect of periphyton substrate on growth performance and production of L. fimbriatus was observed when compared with the group receiving feed. Survival was not affected by the treatments. Production did not vary between the substrate orientations. Carcass of fish in F, SV, and SB had similar proximate composition. Activity of gut digestive enzymes was higher in treatments with substrate as compared to no substrate treatments.

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在两个方向上提供饲料和外周生物基质的培养基中，伞状拉布拉多的生长性能、胴体组成和消化酶活性

摘要：通过在4x4x1.2m的土基、施肥的室外水泥罐中进行为期90天的田间生长试验，评估了基质定向对Labeo fimbriatus在外周生物培养系统中生长的影响。处理包括三个不接受进料（NF）的罐、接受进料的罐（F），以及那些接受甘蔗渣作为垂直悬浮在水柱（SV）中或直接施加到罐底（SB）的周边生物基质的罐。以2吨/公顷的速度使用的蔗渣垂直悬挂在SV槽中，而在SB槽底部摊铺。F处理槽中的鱼每天用25%的粗蛋白饲料喂养。与接受饲料的组相比，外周生物基质对伞状乳杆菌的生长性能和产量没有显著影响。存活率不受治疗的影响。生产在基板方向之间没有变化。F、SV和SB的鱼体具有相似的近似组成。与无底物处理相比，有底物处理的肠道消化酶活性更高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied Aquaculture Environmental Science-Ecology

CiteScore

3.20

自引率

0.00%

发文量

期刊介绍： The Journal of Applied Aquaculture is a platform for the sharing of practical information needed by researchers to meet the needs of investors, farm managers, extension agents and policy makers working to adapt aquaculture theory to achieve economic and food security objectives in the real world. The journal emphasizes multi-disciplinary research and case studies that propose financially and logistically viable solutions to observable problems.