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| Author(s): |
Thaís da Silva Oliveira
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Jaboticabal. 2020-10-14. |
| Institution: | Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal |
| Defense date: | 2020-09-28 |
| Advisor: | João Batista Kochenborger Fernandes |
| Abstract | |
Essential amino acid balance in the diet ensures the deposition of ideal protein content in animal body which is necessary for the healthy growth. However, the lack or insufficient ratios of essential amino acids in the diet do not allow the fish to deposit optimum protein contents. In fish nutrition, to assess the animal response to essential amino acid (EAA) deficiencies and their effect on the body nitrogen retention, several methods are used, including the deletion approach. In the deletion technique, the test amino acid levels are effectively reduced in the experimental diets, and by the comparative slaughter method, body nitrogen retention is determined. Using the body N retention data, the optimal ratios of essential amino acids are calculated, serving as a baseline for the formulation of practical and experimental diets for large size fish. This information is still scarce for several commercially cultivable fish species, including pacu. Pacu is a suitable fish for large-scale production, endemic to the freshwater bodies in Latin American Mestranda – Thaís da Silva Oliveira Orientador – Dr. João Batista Kochenborger Fernandes CAUNESP 10 Countries as well as widely cultured in several other countries of the world as an exotic species. Therefore, research focused on the nutrition of this species may contribute positively to the global aquaculture production and supplies important data to the commercial feed industry. The available knowledge about amino acid requirements of adult pacu is still limited. The present study supplies an important outline for the optimization of amino acid use efficiency of adult pacu to reduce the absolute protein contents in the diets and minimize the excessive N emissions in aquatic environments. (AU) | |
| FAPESP's process: | 19/06343-3 - Optimal essential amino acids ratio for pacu in the termination phase by the deletion method |
| Grantee: | Thaís da Silva Oliveira |
| Support Opportunities: | Scholarships in Brazil - Master |