Abstract
The effects of copaiba essential oil on growth performance and yield of slaughtered broilers were evaluated. Four hundred and fifty broiler chicks were distributed in a completely randomized design, with five treatments, and six replicates of 15 broiler chicks. Treatments comprised Control (commercial promoter) and four levels of copaiba essential oil, or rather, 0.15 (0.15EO); 0.30 (0.30EO); 0.45 (0.45EO) and 0.60 mL (0.60EO) kg -1 feed. The 21-day-old broilers fed on growth promoter had a greater body weight than that of birds fed on treatments with inclusion 0.30, 0.45 and 0.60 mL of essential oil (p 0.05). The efficiency of productive index decreases in proportion to the increase of copaiba essential oil inclusion level. Copaiba essential oil may be included in the diet up to 0.15 mL kg -1 level without affecting the performance of broiler chickens.
Highlights
The prophylactic use of antibiotics as growth promoters in diets for broilers has triggered intensive poultry production and improved feed conversion in the animals
Current study evaluated the capacity of copaiba essential oil used as supplement in broiler chickens’ diets to stimulate broiler performance and yield
Treatments comprised control (Control - growth promoter virginiamycin, without Copaiba essential oil); the other treatments consisted of four inclusion levels, or rather, 0.15 (0.15EO), 0.30 (0.30EO), 0.45 (0.45EO) and 0.60 mL (0.60EO) of copaiba essential oil kg-1 of diet
Summary
The prophylactic use of antibiotics as growth promoters in diets for broilers has triggered intensive poultry production and improved feed conversion in the animals. Several experimental studies demonstrate the antimicrobial effects of different plants that grow in the Amazon, they have been performed in in vitro studies. This research seeks to evaluate the essential oil extracted from copaiba (Copaifera Reticulata). Essential oil is partly formed by volatile sesquiterpenes compounds, mainly β-caryophyllene. In antimicrobial activity tests the copaiba essential oil proved to be effective against Staphylococcus aureus, Bacillus subtilis and Escherichia coli. The positive effects observed in in vitro tests justify further research in the area to determine the ideal dietary inclusion level and the mode of action of this vegetal extract so that optimal growth performance and disease resistance in poultry production may be achieved. Current study evaluated the capacity of copaiba essential oil used as supplement in broiler chickens’ diets to stimulate broiler performance and yield
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