Economic feasibility of probiotic use in the diet of Nile tilapia, Oreochromis niloticus, during the reproductive period

Author(s)

Danielle de Carla Dias ^[1] ; Fernanda de Paiva Badiz Furlaneto ^[2] ; Fábio Rosa Sussel ^[3] ; Leonardo Tachibana ^[4] ; Giovani Sampaio Gonçalves ^[5] ; Carlos Massatoshi Ishikawa ^[6] ; Mariene Miyoko Natori ^[7] ; Maria José T. Ranzani-Paiva ^[8]

Affiliation

^[1] Instituto de Pesca - Brasil

^[2] Agência Paulista de Tecnologia dos Agronegócios - Brasil

^[3] Instituto de Pesca - Brasil

^[4] Instituto de Pesca - Brasil

^[5] Instituto de Pesca - Brasil

^[6] Instituto de Pesca - Brasil

^[7] Instituto de Pesca - Brasil

^[8] Instituto de Pesca - Brasil

• Document type: Journal article
• Source: Acta Sci., Anim. Sci.; v. 42, 2020-02-03.

Abstract

ABSTRACT. This work examines the economic advantages of probiotic use in the diet of Nile tilapia broodstock during the reproductive period. For this purpose, Bacillus subtilis was applied as a feed additive. The experimental design was completely randomized with three treatment groups: the T0 control (without probiotic), the T1 continuous probiotic intake, and the T2 alternate probiotic intake at a dose of 0.50 g kg-1 of feed (1010 CFU g-1) with four replicates. For the reproduction assay, 118 females and 48 males of Nile tilapia (proportion 4 males:9 females. hapa-1) (weight 527.65 g ± 185.98 g and length 30.16 cm ± 3.57 cm) were distributed into 12 hapas (3.5 × 2.0 × 1.5 m). Reproductive variables (spawning female percentage, egg production, and fry production) were used to calculate the economic feasibility indexes (total cost of nutrition [TcN], gross revenue [GR], and total operational profit [ToP]). The results show increasing values for spawning female number, collected eggs, and surviving fry in the probiotic groups. We recommend continuous intake of probiotic (feed with addition of probiotic) at a dose of 0.5 g kg-1 of feed (1010 CFU g-1) during the breeding season of Nile tilapia, due to the suitable reproductive indexes and profitability. (AU)

• FAPESP's process: 12/13741-6 - Reproductive indicators of Nile Tilapia, Oreochromis niloticus fed diets supplemented with probiotic composed of Bacillus subtilis
• Grantee: Danielle de Carla Dias
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 13/19502-6 - Reproductive indicators of Nile Tilapia, Oreochromis niloticus fed diets supplemented with probiotic composed of Bacillus subtilis
• Grantee: Danielle de Carla Dias
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 10/11694-5 - Reproductive indicators of tilapia, Oreochromis niloticus, feed with probiotic composed by Bacillus subtilis
• Grantee: Danielle de Carla Dias
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 10/11141-6 - Reproductive indicators of tilapia, Oreochromis niloticus, feed with probiotic composed by Bacillus subtilis
• Grantee: Maria José Tavares Ranzani de Paiva
• Support Opportunities: Regular Research Grants