Banca de DEFESA: MIGUEL FAUST

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MIGUEL FAUST
DATE: 10/12/2021
TIME: 13:30
LOCAL: Web Conferência - Google Meet - https://meet.google.com/osz-dsjw-vmi.
TITLE:

Resistance to post-larvae stresses of Nile tilapia (Oreochromis niloticus) with dietary supplementation with Saccharomyces cerevisiae during sex inversion.

KEY WORDS:

fish; nutrition; food additives; yeast.

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

The objective of this work was to evaluate the post-larvae stress resistance of Nile tilapia (Oreochromis niloticus) after a sexual inversion process supplemented with ADD LIFE PRO SACCH ACQUA, consisting of microencapsulated Saccharomyces cerevisiae. Analyzes of water quality parameters (temperature, pH, dissolved oxygen, nitrogen compounds), zootechnical performance (final weight, total length, weight gain, adaptation, apparent feed adaptation, specific growth rate and batch uniformity) were analyzed. stress resistance (test of resistance to transport, exposure to air, thermal shock, osmotic shock) and sex inversion rate. For this, 1,200 were selected to belong and randomly distribute in six experimental units (200 / box). The experimental units (EU) consisted of masonry boxes with a useful volume of 64 liters, with strong aeration and constant running water renewal. The experimental design was completely randomized and divided into two treatments: 200g of AddLife Acqua Biosyn (yeast, Saccharomyces cerevisiae) per ton of feed, and a control group (without a probiotic). As a result, the diet containing the probiotic compound (AddLife Acqua, Biosyn) expressed counts (UFC.g-1) of the respective microorganisms above the expected level of 8.9x1010 yeasts, both after extrusion and at the end of the experiment. After 19 days, such as Nile tilapia larvae (Oreochromis niloticus) fed with probiotic, higher final weight (g), source rate (%), and lower feed conversion compared to the control group. While the final length, specific growth rate (%/day) and sex inversion rate did not diverge between treatments. In the testes of stress with thermal and osmotic shock main in treatment with the probiotic diet (Saccharomyces cerevisiae). Therefore, it is concluded that supplementation with probiotic additives has proven its effectiveness and viability, bringing benefits such as better zootechnical performance and stress resistance of Nile tilapia post larvae.

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