Banca de QUALIFICAÇÃO: WANDERSON DUARTE PENIDO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : WANDERSON DUARTE PENIDO
DATE: 29/04/2022
TIME: 14:00
LOCAL: meet.google.com/rqw-fwvx-hey
TITLE:

Performance evaluation of Nile tilapia (Oreochromis niloticus) fed diets supplemented with Lactobacillus plantarum, Bacillus subtilis and Candida infanticola.

KEY WORDS:

Biosurfactants; Probiotics; Pisciculture; Nile Tilapia; Pathogens.

PAGES: 48
BIG AREA: Multidisciplinar
AREA: Biotecnologia
SUMMARY:

Aquaculture is the fastest growing agricultural activity in Brazil and in the world,
having its products as the healthiest and least impacting for the environment
environment. Brazil is the fourth largest producer of farmed fish and the fourth largest
tilapia producer in the world, and it is estimated that in 20 years it will be the largest
world producer of farmed fish, with Nile tilapia (Oreochromis
niloticus). The country has the largest reserve of fresh water on the planet, has a climate
favorable and many adaptable species, which contributes to the great growth of its
production. Even though fish and fishery products have the least impact on the environment
environment, environmental impacts can be caused if a proper management is not carried out.
correct in the creation process. Effluents with large amounts of organic matter,
nitrogen and phosphorus are generated in the process, which contributes to the eutrophication of
water bodies, with low availability of dissolved oxygen, resulting in reduced
or alteration of biodiversity. These factors can cause stress in the lives of fish,
making them susceptible to pathogens. In this context, this work aims to
to study the action of Candida infanticola yeast and Bacillus subtilis bacteria and
Lactobacillus plantarum, on the performance of Nile tilapia (Oreochromis niloticus).
To this end, the tilapia fingerlings' diet was supplemented with L. plantarum, B. subtilis and
C. infanticola and the effect of this supplementation on the viability and performance of
fish, as well as on resistance to pathogen infection (in vitro) and quality of
tank water was evaluated. Among the treatments used, there was a significant effect
of the treatment containing Bacillus subtilis in the feed conversion, being similar to the
treatment with L. plantarum and also with all microorganisms. the index of
survival in all treatments was greater than 90%. In the analysis of antagonism,
only B. subtilis showed formation of inhibition halos against the pathogen of
Aeromonas hydrophila. There was no effect of treatments on quality parameters
of water, maintaining the ideal throughout the experimental period, without causing stress and/or
damage to fish performance. It is also intended to evaluate the effect of
supplementation on feed digestibility and on intestinal morphohistology.

BANKING MEMBERS:
Presidente - 1757978 - DANIEL BONOTO GONCALVES
Interno - 1675931 - PAULO AFONSO GRANJEIRO
Externa ao Programa - 1719911 - JULIANA TEIXEIRA DE MAGALHAES
Externo à Instituição - CARLOS HENRIQUE DE FIGUEIREDO VASCONCELLOS - UFV