Banca de DEFESA: NATALIA FERNANDES PEREIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : NATALIA FERNANDES PEREIRA
DATE: 28/07/2023
TIME: 09:00
LOCAL: Web Conferência - Google Meet: https://meet.google.com/pwb-hwrt-qjq.
TITLE:

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

KEY WORDS:

marine shrimp; water quality; organic matter; growth performance; bioremediation

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

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. Bioremediators may be helping to control pathogenic bacteria and improve water quality, making animals less susceptible to diseases. The objective was to evaluate the effect of the use of bioremediators in experimental cultures of post-larvae (P. vannamei) in intensive systems without water exchange, on the quality of water and juveniles. The experiment was carried out in boxes with a capacity of 250 L, lasting 39 days. Divided into two groups (control and bioremediator) in quadruplicate. In the treatment of the bioremediator, 0.1g/m³ of the commercial product Arkhon Aqua® (Bacillus subtilis, B. licheniformes, B. amyloliquefaciens, B. megateriam, concentrations 2.5 x 10¹⁰ CFU/g) was applied. For water quality, physical-chemical parameters, quality of post-larvae performed in an optical microscope and microbiological parameters performed on post-larvae and water were monitored. The results showed a significant reduction in TSS volume (105.33 ± 16.17), floc volume (1.75 ± 0.87) and in the presence of organic matter in the gills (0.25 ± 0.13), in addition to having higher average final weight (0.68 ± 0.10) and better AFR (1.04 ± 0.08), compared to the control group. Vibrios spp., on the other hand, showed a higher concentration in the water in the bioremediator group, however, it did not influence the result of the post-larvae. It is concluded that the bioremediator improved the environment, as well as boosted shrimp growth.

COMMITTEE MEMBERS:
Externo à Instituição - JOSÉ LUIZ PEDREIRA MOURIÑO - UFSC
Externo à Instituição - LUIS OTAVIO BRITO DA SILVA - UFRPE
Presidente - 1830781 - ADOLFO JATOBA MEDEIROS BEZERRA
Externo ao Programa - 2356802 - ROBILSON ANTONIO WEBER - null