Banca de DEFESA: MAIARA PETRI VILVERT

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MAIARA PETRI VILVERT
DATE: 28/07/2020
TIME: 10:00
LOCAL: Web Conferência via Google Meet - meet.google.com/asj-iuys-vyf.
TITLE:

Taurine supplementation in diets for juvenile Nile tilápia (Oreochromis niloticus).

KEY WORDS:

amino acid; aquaculture; hematology; nutrition; sustainability.

PAGES: 45
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUMMARY:

Taurine is considered an essential conditionally amino acid for fish and their biosynthesis, from methionine and cystine differs between different species of fish and is also affected by the presence or not in the ingredients used in the manufacture of feed, so its supplementation can improve feed efficiency. The present study evaluated the supplementation of taurine in the zootechnical performance, hematological and immunological parameters and in the survival of juveniles of Nile tilapia (Oreochromis niloticus) grown in two types of system, RAS and bioflocs. A control diet with 360 g / kg of crude protein was prepared without fish meal and without taurine supplementation (Control). From the control diet, another diet supplemented with 9.7 g of taurine per kg of feed was produced (Taurine). In cultivation system RAS, the fish were fed manually, five times a day, seven days a week. The tilapia (n = 200, with an average weight of 13.3 g) were distributed in 8 polyethylene boxes of 800 L each, 25 fish per box, in a completely randomized design with 2 treatments and 4 repetitions, lasting eight weeks. In the biofloc system, the tilapia (N = 150, with an average weight of 18.3 g) were distributed in 6 polyethylene boxes of 250 L each, 25 fish per box, in a completely randomized design with 2 treatments and 3 repetitions, with duration of four weeks. The animals were fed manually, three times a day, seven days a week. In both crops, biometrics were performed weekly to adjust food management. The taurine treatment obtained less daily average weight gain and final average weight in relation to the control (p <0.05), however, in the biofloc system the fish that received the taurine supplementation obtained a higher hepatosomatic index (p <0.05 ). It was observed that there was no influence of taurine on the fish condition factor and blood parameters, but there was an increase in the VCM index and a higher N retention in the control treatment fish reared in the RAS (p <0.05). It is concluded that, regardless of the cultivation system, juveniles of Nile tilapia do not benefit from taurine supplementation even when fed diets containing protein-based plant sources.

BANKING MEMBERS:
Presidente - 1830781 - ADOLFO JATOBA MEDEIROS BEZERRA
Externo à Instituição - Bruno Corrêa da Silva
Externo à Instituição - GABRIEL FERNANDES ALVES JESUS