Proteina bruta em dietas para reprodutores de tilápia do nilo

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorAPTA/SAA
dc.date.accessioned2018-12-11T17:19:49Z
dc.date.available2018-12-11T17:19:49Z
dc.date.created2018-12-11T17:19:49Z
dc.date.issued2017-01-01
dc.identifierBoletim do Instituto de Pesca, v. 43, p. 35-46.
dc.identifier0046-9939
dc.identifier1678-2305
dc.identifierhttp://hdl.handle.net/11449/176258
dc.identifier10.20950/1678-2305.2017.35.46
dc.identifier2-s2.0-85046404999
dc.identifier4101531001275686
dc.identifier0000-0003-0808-6657
dc.description.abstractThe effect of different levels of crude protein (32A, 32B, 36, 38, 44 and 50% CP; 3,500 kcal digestible energy) on Nile tilapia broodstock was assessed. After 30 experimental weeks (Sept./14 to Mar./15), 91.0% of eggs from fish fed 44% CP hatched and produced 16.4% more viable larvae than the treatment with 32% CP. Egg production and absolute fecundity were similar between treatments (p>0.05). Sperm motility, average path, straight line and curvilinear velocities showed satisfactory values with 44% CP, unlike 36% CP. Lower profitability was observed with 32% CP; profit increased as protein level upped. Statistically significant responses were not found for reproductive performance of females. Results were satisfactory for commercial-scale production as crude protein increased. The initial hypothesis was demonstrated for most parameters assessed in males, larvae growth and economic viability. Therefore, it is recommend the use of diets with 44% CP for Nile tilapia brood fish.
dc.languageeng
dc.relationBoletim do Instituto de Pesca
dc.relation0,220
dc.relation0,220
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectLarvae
dc.subjectReproductive performance
dc.subjectSemen
dc.subjectSurvival
dc.titleCrude protein in diets for nile tilapia broodfish
dc.titleProteina bruta em dietas para reprodutores de tilápia do nilo
dc.typeArtículos de revistas


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