不同外源酶水平对尼罗罗非鱼(Oreochromis niloticus)和槽鱼(Ictalurus punctatus)生产性能和体组成的影响

IF 1.3 Q3 FISHERIES

Journal of Applied Aquaculture Pub Date : 2021-07-30 DOI:10.1080/10454438.2021.1956669

J. Tidwell, S. Coyle, W. Rossi, K. Rucker

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引用次数: 3

摘要

摘要本研究对啤酒糟(BSG)和一种酶添加剂(AllzymeTM;在尼罗罗非鱼幼鱼(~5 g/鱼)(试验1)和槽式鲶鱼(试验2)的实际饲料中添加ENZ)。采用因子设计，研究了饲粮中添加3个水平的BSG(0、270和550 g/kg)和3个水平的ENZ(0、0.2和0.4 g/kg)对鱼的生产性能和全身组成的影响。饲喂试验结束后，没有发现ENZ的作用，也没有发现BSG和ENZ之间的相互作用。鱼的存活率约为85%，不受饮食的影响。随着饲料中BSG从0增加到550 g/kg，罗非鱼和鲶鱼的生长分别从949%下降到778%和182%下降到1364%。在这些试验中，当BSG添加率≥270 g/kg时，通道鲶鱼和罗非鱼的增重均有所降低，外源酶的添加并没有提高BSG的利用率。

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Evaluation of brewers spent grains with different levels of exogenous enzymes on the production performance and body composition of Nile tilapia (Oreochromis niloticus) and channel catfish (Ictalurus punctatus)

ABSTRACT This study evaluated Brewers Spent Grains (BSG) and an enzyme additive (AllzymeTM; ENZ) in practical diets for juvenile (~5 g/fish) Nile tilapia (Trial 1) and channel catfish (Trial 2). Following a factorial arrangement, effects of three dietary levels of BSG (0, 270, and 550 g/kg) and three levels of ENZ (0, 0.2, and 0.4 g/kg) on production performance and whole-body composition of the fish were evaluated. Upon conclusion of the feeding trials, no effects of ENZ, or interactions between BSG and ENZ, were found. Fish survival was >85% and unaffected by diet. Reduced growth of tilapia (from 949% to 778%) and catfish (from 1802% to 1364%) as dietary BSG increased from 0 to 550 g/kg were observed. In these trials, weight gain was reduced in both channel catfish and tilapia at BSG inclusion rates of ≥270 g/kg and that the addition of exogenous enzymes did not improve BSG utilization.

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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.