Economic Analysis of the Use of Restrictive Food Management in the Cultivation of Tilapia(Oreochromis niloticus)in a Recirculation System  

作　　者：Giovanni Resende de Oliveira Thiago Archangelo Freato Juan Daniel Villacis Fajardo Tainára Cunha Gemaque Nancy Andrea Villacis Fajardo Daniel Pereira da Costa 

机构地区：[1]Agricultural Research Company of Minas Gerais(EPAMIG),Experimental Field of Leopoldina,Leopoldina,MG 36700-000,Brazil [2]State University of Campinas(UNICAMP),Center for Meteorological and Climate Research Applied to Agriculture,Campinas,SP 13083-886,Brazil [3]University of Amapa State(UEAP),Campus Lakes Territory,Amapá,AP 68950-000,Brazil [4]Federal University of Minas Gerais(UFMG),Campus Pampulha,Belo Horizonte,MG 31270-010,Brazil [5]National University of the Peruvian Amazon(UNAP),Iquitos 16024,Peru

出　　处：《Journal of Agricultural Science and Technology(B)》2022年第2期31-39,共9页农业科学与技术（B）

摘　　要：The development of more adequate food programs regarding the intensity and duration of the restriction can be an effective way to minimize the effects of exaggerated food consumption and its negative consequences for the economy of the business.In this sense,juvenile Nile tilapia(Oreochromis niloticus)(137±3 g)were submitted to different feeding strategies in a recirculation system.Five feeding strategies were tested in subsequent weekly cycles:continuous feeding;skipping one meal a week;suppression of two non-consecutive meals a week;suppression of three non-consecutive meals a week;suppression of four non-consecutive meals a week.Productive performance,feed consumption in the post-restriction period and economic indicators were evaluated through projections and profitability analyses.Compensatory intake occurred in all tested groups,so that the total feed intake(FI)did not differ significantly between them(p>0.05).Moderate food restriction provided a linear increase in the relative gross margin for each treatment with each change in salary level,as well as greater profitability when compared to the respective control group(p<0.05).

关 键 词：Feed management feed restriction carcass quality carcass yield operational yield economic efficiency 

分 类 号：S91[农业科学—水产科学]