Avaliação dos efeitos da adição do óleo essencial de orégano (Origanum vulgare) na dieta, sobre a fisiologia e a produtividade de codornas japonesas (Coturnix coturnix japonica)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The antibiotic use as growth promotional is being gradually prohibited due to the possible risk of drugs resistance for human pathogenic bacteria resulting in an increasing interest for produced organic foods, that the public in general associated as healthful food. Between the options, the herbals extracts (amongst them the oregano, Origanum vulgare) are part of a class of products that will be able to substitute antimicrobials agents. In the first chapter it was evaluated the effect of addition of oregano (Origanum vulgare) essential oil in the intake, body weight gain, posture and fecal parasitological load of Japanese quails (Coturnix coturnix japonica). The possible alterations in the hematological and biochemistry standards of these birds had been also analyzed. One hundred quails had been divided in 2 groups (experimental and control) of 50 animals. Every group had been divided in 5 lots with 10 quails each. Each cage possessed one lot of the control group and another one of the experimental group. The control group had received ration standard for quails, added of canola vegetal oil in the ratio of 20g/kg ration. The experimental group had received for each kilogram of ration, 20g of the mixture of canola oil added oregano essential oil (in the concentration of 1%), aiming at to supply 200mg of essential oil for kilogram of food. The addition of essential oil was not modified the performance and did not display antiparasite activity in the experimental group. No effect was detected in the biochemistry and hematological parameters of the quails treated with the oregano oil, in 90 days of chronic administration. In the second chapter, the antioxidant activity of the oregano was evaluated. For this, in the last day of the experiment, thirty animals (fifteen of each group) had been submitted to immobilization stress (this procedure is able to generate oxidative stress) and others thirty birds (fifteen of each treatment) remained in the cages (birds were not stressed). The experimental group had gotten lowers values of monocytes, band neutrophil, monocytes/lymphocytes ratio and glucose, when compared with the control group. It did not have significant differences in the carbonyl proteins and TBARS concentrations. The results suggest that the oregano essential oil promoted a protective effect in the supplemented animals when they had been submitted to immobilization.

ASSUNTO(S)

diet desempenho origanum vulgare performance physiology dieta coturnix coturnix japonica fisiologia producao animal coturnix coturnix japonica origanum vulgare

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