Banca de DEFESA: RAFAELA LEMES DA COSTA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : RAFAELA LEMES DA COSTA
DATA : 31/07/2019
HORA: 15:00
LOCAL: Sala 01, Bloco C, Campus de Presidente Médici
TÍTULO:

CENTENSIMAL COMPOSITION AND EFFECT OF Mauritia flexuosa PULP FLOUR ON THE CELL IMMUNE RESPONSEOF Colossoma macropomum JUVENILES

PALAVRAS-CHAVES:

Buriti. Antioxidant. Immunomodulator. Tambaqui

PÁGINAS: 65
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

Mauritia flexuosa (buriti) is a South American palm that the fruit pulp is considered a functional food, but this food resource is still little known. As the characteristics of the fruit depends on several factors, the present work analyzes the pulp yield and composition of M. flexuosa pulp meal and the zootechnical performance and immune response of Colossoma macropomum juveniles, fed by diet supplemented with different concentrations of its flour, and later challenged with Aeromonas hydrophila. The fruits presented a pulp yield of 22.37% and a considerable concentration of lipids and ascorbic acid in the flour. In a completely randomized design test, a total of 64 juveniles (213.4 ± 17.7 g) were fed for 33 days with diets containing three levels of buritipulp meal (0, 5, 10, 20%), and after this period fish were challenged by the bacteria (1 x 106 CFU / mL) for 24 and 48 hours. Apparent feed conversion, specific growth rate, condition factor, visceral fat, carcass yield and hepatosomatic index did not present statistical difference (ANOVA, Tukey, p > 0.05) among the treatments. On the other hand, the splenosomatic indexes (ISS) of the groups exposed to the pathogen for 48h and that received diet containing buriti pulp meal were significantly lower than the ISS of the control group. The differences in white blood cell counts (leukocytes and thrombocytes) among the treatments were not significant; however the inclusion of 5 and 10% of the buriti pulp meal increased significantly this variable between 24 and 48h. Although no statistical difference among treatments, the leukocytes with higher number were the lymphocytes followed by neutrophils, monocytes and eosinophils. Plasma glucose, leukocyte activity (respiratory Burst), alanine aminotransferase and aspartate aminotransferase had significant changes as a function of challenge time, but not among treatments.Thus, it was verified that the yield of pulp of buriti fruit was higher to that presented by fruits of other northern states and after dehydration the flour maintains considerable amounts of ascorbic acid, and when add in the diet of C. macropomum presented immunomodulatory characteristic, increasing the number of lymphoid and neutrophil cells. At the tested concentrations it is an alternative for the diet of this fish species, not impairing the zootechnical performance of the animals. The amount of flour bioactive compounds in the percentages tested, were not enough for the diets to present a significant difference to the control treatment, and as the flour has high lipid value the inclusion of higher concentrations of the flour in the feed balance can be difficult.

MEMBROS DA BANCA:
Presidente - 1715751 - FERNANDA BAY HURTADO
Interno - 1833024 - MARLOS OLIVEIRA PORTO
Externo ao Programa - 2119070 - BRUNA RAFAELA CAETANO NUNES PAZDIORA