Banca de QUALIFICAÇÃO: NATALIA FERNANDES PEREIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : NATALIA FERNANDES PEREIRA
DATE: 02/12/2022
TIME: 08:00
LOCAL: Web Conferência - Google Meet: meet.google.com/hep-fyaf-hah.
TITLE:

BIOREMEDIATORS IN INTENSIVE NURSERY SYSTEMS WITHOUT WATER EXCHANGE FOR SHRIMP (LITOPENAEUS VANNAMEI).

KEY WORDS:

marine shrimp; health; water quality; growth performance; bioremediation.

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

In recent decades, the emergence of diseases has been threatening shrimp farming in the world, generating great economic losses. In aquaculture there are several options to combat health challenges, among them are food additives such as probiotics, organic acids and more recently bioremediators have been used for this purpose. The latter may be helping to control pathogenic bacteria, such as Vibrios sp., and to improve water quality, making animals less susceptible to diseases. The objective of this work was to evaluate the effect of the use of bioremediators in experimental cultures of post-larvae of Pacific white shrimp (L. vannamei) in intensive systems without water exchange, on the quality of juveniles. The experiment took place in boxes with a capacity of 250 L, lasting 39 days. Two treatments (control and bioremediator) were performed in quadruplicate. In the treatment of the bioremediator, the commercial BioHall® was tested (Bacillus subtilis, B. licheniformes, B. amyloliquefaciens, B. megateriam, at concentrations of 2.5 x 10¹⁰ CFU/g, manufacturer's guarantee levels), with daily applications of 0.2g/m³. To analyze the quality of the post-larvae, organs and tissues were analyzed under a microscope. For water quality, the physical and chemical parameters of the water were monitored. The results showed a significant reduction in the presence of organic matter in the gills, as well as a reduction in the total suspended solids and water floc volume, in addition to presenting higher final weight and productivity. it is concluded that the bioremediator improved the environment, as well as potentiated the growth of shrimp.

COMMITTEE MEMBERS:
Presidente - 1830781 - ADOLFO JATOBA MEDEIROS BEZERRA
Interno - 2613308 - DELANO DIAS SCHLEDER
Interna - 1046884 - ELIZABETH SCHWEGLER
Interno - 1810731 - JULIANO SANTOS GUERETZ
Interno - 2017813 - RICARDO EVANDRO MENDES
Interna - 2408296 - SORAYA REGINA SACCO