DIETS SUPPLEMENTED WITH MINERAL ORGANIC AND INORGANIC FOR NILE TILAPIA Oreochromis niloticus (phases: juvenile, breeder, larval)

• Grant number: 16/11953-7
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2016
• End date: April 30, 2019
• Field of knowledge: Agronomical Sciences - Fishery Resources and Fishery Engineering - Aquaculture
• Principal Investigator: Elizabeth Romagosa
• Grantee: Elizabeth Romagosa
• Host Institution: Instituto de Pesca. Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). São Paulo , SP, Brazil
• Associated researchers: Fábio Bittencourt ; Giovani Sampaio Gonçalves ; Taís da Silva Lopes

Abstract

Studies of minerals have been developed in order to ensure better absorption of these nutrients in the intestinal tract of fish without entering the ion competition process, usually determined by the presence of a higher concentration of mineral ions. The present study aims to evaluate the replacement of minerals (selenium, zinc, iron, copper and manganese) inorganic for organic forms in diets for different phases of development during the life cycle of Nile tilapia (Phase 1. Juvenile; Phase 2. Breeder in 1º Gonadal Maturation; Phase 2.1 - Larval; Phase 3. Maintenance of breeders; Phase 4. Breeder in 2º Gonadal Maturation and Phase 4.1 - Larval). Five diets will be formulated according to the nutritional requirements of each phase, with distinction only in the forms of minerals to be supplemented in each: T1 - 100% inorganic minerals (control), T2 - 100% organic minerals, T3 - 25% mineral organic and 75% inorganic mineral, T4 - 50% organic and 50% mineral inorganic mineral and T5 - 75% organic and 25% mineral inorganic minerals. In the different phases will be evaluated performance, reproductive, enzymatic, histological and blood parameters and concentration of minerals in vertebra, carcass and eggs. The results will be submitted to statistical analysis that had better adjust to the experimental model. It is hoped that the development of this work to attend the existing demand of the private sector of a diet supplemented with adequate minerals, increasing the production of eggs and larvae, providing improvements in the development of the animals, thus optimizing cost and benefit. (AU)