Show simple item record

Digestible protein requirements for maintenance, growth, and efficiency of protein utilization in pacu (Piaractus mesopotamicus) juveniles: an exponential nitrogen utilization model

dc.contributorCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for grants (1525577)en-US
dc.contributorFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)for financial support (2013/25761-4 and 2016/11016-3).en-US
dc.creatorMansano, Cleber F.M.
dc.creatorda Silva, Edney P.
dc.creatorKhan, Kifayat U.
dc.creatorMacente, Beatrice I.
dc.creatorNascimento, Thiago M.T.
dc.creatorSakomura, Nilva K.
dc.creatorFernandes, João B.K.
dc.creatorTakahashi, Leonardo S.
dc.date2021-08-31
dc.date.accessioned2021-09-07T13:34:53Z
dc.date.available2021-09-07T13:34:53Z
dc.identifierhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol49-issue4-fulltext-2678
dc.identifier10.3856/vol49-issue4-fulltext-2678
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/175875
dc.descriptionThe present study aimed to estimate digestible protein (DP) requirements for maintenance and growth and assess the efficiency of protein utilization in pacu (Piaractus mesopotamicus) juveniles. A complete randomized design consisted of seven treatments, and five replicates (tanks) per treatment was used. After a one-week acclimation period, 350 pacu juveniles of 27.48 ± 1.8 g (initial average body weight - BW) were equally distributed among 35 tanks (10 fish per tank) of 450 L. Fish were fed with seven graded digestible protein levels (64.5, 111.8, 164.6, 217.1, 264.4, 316.2 and 369.5 g kg-1) three times a day until apparent satiation for 120 days. The monomolecular model parameters including nitrogen maintenance requirement (NMR) (37.76 mg BW0.67 kg-1 d-1), daily nitrogen deposition (ND) (194.8 mg BW0.67 kg-1 d-1), and protein intakes (based on metabolic BW) of 1638, 1902, and 2241 mg kg-1BW0.67 d-1 for 75, 80 and 85% maximum theoretical nitrogen retention (NRmaxT), respectively and the efficiency of protein utilization (529×10-6) were estimated through the relationship between nitrogen intake (NI) and ND. The digestible protein requirements for 75, 80, and 85% of NRmaxT were estimated as 187, 217, and 256 g kg-1 respectively by the monomolecular model based on the daily feed intake of 2% of live BW of pacu juveniles.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherPontificia Universidad Católica de Valparaísoen-US
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol49-issue4-fulltext-2678/1440
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol49-issue4-fulltext-2678/2095
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol49-issue4-fulltext-2678/2097
dc.rightsCopyright (c) 2021 Latin American Journal of Aquatic Researchen-US
dc.sourceLatin American Journal of Aquatic Research; Vol 49, No 4 (2021); 608-619en-US
dc.sourcePlataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 49, No 4 (2021); 608-619es-ES
dc.source0718-560X
dc.source0718-560X
dc.subjectPiaractus mesopotamicus; feed intake; monomolecular model; maintenance requirement; nitrogen deposition; pacu nutritionen-US
dc.titleDigestible protein requirements for maintenance, growth, and efficiency of protein utilization in pacu (Piaractus mesopotamicus) juveniles: an exponential nitrogen utilization modelen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US
dc.typees-ES


This item appears in the following Collection(s)

Show simple item record