title: Diet supplemented with probiotic for Nile tilapia in polyculture system with marine shrimp.
abstract: The aim of this study was to assess the effect of a probiotic (Lactobacillus plantarum) supplemented diet on Nile tilapia (Oreochromis niloticus) in a polyculture system with marine shrimp (Litopenaeus vannamei) as regards culture performance, hematology, and gut bacterial microbiota. Ten 20-m² pens were arranged in one earthen pond and stocked with 2 fish (41.9 g) m(-2) and 10 shrimp (2.3 g) m(-2), in total of 40 Nile tilapias and 200 shrimp per experimental unit. Tilapia groups in five of the experimental units were fed a commercial diet supplemented with L. plantarum and the other five with an unsupplemented commercial diet (control). After 12 weeks of culture, the tilapia groups fed the probiotic-supplemented diet presented values 13.6, 7.5, and 7.1% higher for feed efficiency, yield, and final weight, respectively. Viable culturable heterotrophic bacteria counts were reduced, and the number of lactic acid bacteria was increased in the gut of fish and shrimp fed the probiotic-supplemented diet. Hematological analyses showed higher number of thrombocytes and leukocytes in tilapia fed the supplemented diet. L. plantarum utilized in this study colonized the gut of tilapia and shrimp and resulted in reduced number of total bacteria and increased tilapia final weight and feed efficiency.
authors.affiliation: Departamento de Aquicultura, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil. adolfo.jatoba@ifc-araquari.edu.br
authors.forename: Adolfo
authors.initials: A
authors.lastname: Jatobá
authors.forename: Felipe do Nascimento
authors.initials: Fdo N
authors.lastname: Vieira
authors.forename: Celso Carlos
authors.initials: CC
authors.lastname: Buglione-Neto
authors.forename: José Luiz Pedreira
authors.initials: JL
authors.lastname: Mouriño'
authors.forename: Bruno Corrêa
authors.initials: BC
authors.lastname: Silva
authors.forename: Walter Quadros
authors.initials: WQ
authors.lastname: Seiftter
authors.forename: Edemar Roberto
authors.initials: ER
authors.lastname: Andreatta
mesh_terms: D000818:Animals; D017756:Aquaculture; D004032:Diet; D006434:Hemocytes; D033561:Penaeidae / Q000166:cytology; D019936:Probiotics; D017210:Tilapia / Q000097:blood / Q000254:growth & development* / Q000382:microbiology