Banca de DEFESA: GUILHERME MELGAÇO HELUY

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : GUILHERME MELGAÇO HELUY
DATA : 25/04/2019
HORA: 09:00
LOCAL: INSTITUTO DE ZOOTECNIA DA UFRRJ
TÍTULO:

Oregano essential oil (Origanum vulgare) as a dietary additive for juveniles of tilapia Oreochromis niloticus grown in salinized water.

PALAVRAS-CHAVES:

Phytotherapics, growth performance, food efficiency.

PÁGINAS: 51
GRANDE ÁREA: Ciências Agrárias
ÁREA: Zootecnia
SUBÁREA: Produção Animal
RESUMO:

Heluy, Guilherme Melgaço. Oregano essential oil (Origanum vulgare) as a dietary additive for juveniles of tilapia Oreochromis niloticus grown in salinized water. 2019. 42p. Dissertation (Master in Animal Science). Instituto de Zootecnia, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, 2019. 

Phytogenic additives are plant derived products that are added in the diets of animals for improving their productive performance. Among them, oregano essential oil (Origanum vulgare) stands out as being a natural and safe compound, both for animals and humans, as well as for the environment, having the potential to be used as a growth promoter, improving food efficiency. The subject of this study was to evaluate the effects of Oregano essential oil on zootechnical performance, blood glycemia, body composition and intestinal morphometry of Nile tilapia (Oreochromis niloticus) reared in salinized water. The experimental design was completely randomized, with five treatments and four replicates, where a diet containing different concentrations of oregano essential oil (0.0; 0.75; 1.5; 2.25; 3.0 g kg^-1). The fish (1.47 ± 0.39 g) were distributed into twenty tanks containing 60 liters of saline water at 10 g L^-1 at the density of 0.5 fish L^-1 and fed to apparent satiety four times day during 64 days. There was a significant effect (P <0.05) on the inclusion of 0.75 g kg^-1 of oregano essential oil in the diet for the parameters of zootechnical performance gain weight, apparent feed conversion rate, feed efficiency ratio, feed rate protein efficiency and condition factor. For centesimal composition, there was no significant result for the analyzes performed. There was also a significant effect on the villus length, which was higher than the level of reading of essential level of oregano in the diet, being the level of 3.0 g kg^-1 which presented the most expressive results for this parameter, and no significant effect was observed (P> 0.05) for the other analyzes. Thus, it can be concluded that the addition of essential oil of oregano in diets for Nile tilapia (Oreochromis niloticus), up to the level of 0.75g Kg^-1, grown in saline water, acts as growth promoter and stimulator of intestinal villi growth.

 

MEMBROS DA BANCA:
Presidente - 2376201 - LEONARDO ROCHA VIDAL RAMOS
Interno - 3067308 - MATHEUS PEREIRA DOS SANTOS
Externo à Instituição - RODRIGO TAKATA - FIPERJ