Evaluation of the use of probiotics in diets with or without growth promoters for broiler chicks
This work was carried out to evaluate the use of Bacillus subtilis probiotic C-3102 (10(10)cfu/g) in diets with or without growth promoters on the performance of broilers in the period from 1 to 42 days of age. It was used 1,200 Cobb line broilers, distributed in a complete randomized block with fiv...
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| Published in: | Revista brasileira de zootecnia Vol. 39; no. 12; pp. 2687 - 2690 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Zootecnia
01-12-2010
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | This work was carried out to evaluate the use of Bacillus subtilis probiotic C-3102 (10(10)cfu/g) in diets with or without growth promoters on the performance of broilers in the period from 1 to 42 days of age. It was used 1,200 Cobb line broilers, distributed in a complete randomized block with five diets: negative controller (without promoters); Bacillus subtilis (30 g/t ration); Bacillus subtilis (50 g/t ration); Bacillus subtilis (30 g/t ration) + colistin (10 ppm); avilamycin (10 ppm) + colistin (10 ppm). Each diet was evaluated in 10 repetitions with 24 birds. From 21 to 42 days of age, feed intake, weight gain and feed conversion were evaluated, and at 42 days of age, productive efficiency index was evaluated. At the end of the experimental period, it was observed an increase in the consumption of diet with the lowest dose of Bacillus subtilis (30 g) in relation to that one with Bacillus subtillis (30 g) + colistin (10 ppm). The values of weight gain obtained with the diet with the lowest dose of Bacillus subtillis (30 g) and with avilamycin (10 ppm) + colistine (10 ppm) were higher than those of the birds fed control diet (without promoters). For feed conversion, the best results were obtained by supplying diets containing 50 g of Bacillus subtillis, diet with 30 g of Bacillus subtillis + 10 ppm of colistin; and diet with 10 ppm of avilamycin + 10 ppm colistin. For the analysis of productive efficiency index, the best results were obtained with diets containing additives (probiotics and/or antibiotics) in comparison to the control diet. Bacillus subtillis C-3102 probiotic, at concentration 10(10) cfu/g, is an efficient substitute of antibiotics.
Este trabalho foi realizado para avaliar o uso do probiótico Bacillus subtilis C-3102 (10(10) ufc/g) em dietas contendo ou não promotores de crescimento sobre o desempenho de frangos de corte no período de 1 a 42 dias de idade. Foram utilizados 1.200 frangos de corte da linhagem Cobb, distribuídos em delineamento inteiramente ao acaso com cinco dietas: controle negativo (sem promotores); Bacillus subtilis (30 g/t de ração); Bacillus subtilis (50 g/t de ração); Bacillus subtilis (30 g/t de ração) + de colistina (10 ppm); avilamicina (10 ppm) + colistina (10 ppm). Cada dieta foi avaliada em 10 repetições de 24 aves. Foram avaliados aos 21 e 42 dias o consumo de ração, o ganho de peso e a conversão alimentar e, aos 42 dias, o índice de eficiência produtiva. Ao final do período experimental, observou-se aumento no consumo para a dieta com a menor dose de Bacillus subtilis (30 g) em relação àquela com Bacillus subtilis (30 g) + colistina (10 ppm). Os valores de ganho de peso obtidos com a dieta com menor dose de Bacillus subtilis (30 g) e com avilamicina (10 ppm) + colistina (10 ppm) foram superiores aos das aves alimentadas com a dieta controle (sem promotores). Para conversão alimentar, os melhores resultados foram obtidos com o fornecimento das dietas com 50 g de Bacillus subtilis; com 30 g de Bacillus subtilis + 10 ppm de colistina; e com 10 ppm de avilamicina + 10 ppm de colistina. Na análise do índice de eficiência produtiva, os melhores resultados foram obtidos com as dietas contendo aditivos (probióticos e/ou antibióticos) em comparação à dieta controle. O probiótico Bacillus subtilis C-3102, na concentração 10(10) ufc/g, é um substituto eficiente de antibióticos. |
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| Bibliography: | http://www.scielo.br/scielo.php?pid=S1516-35982010001200019&script=sci_abstract&tlng=pt |
| ISSN: | 1516-3598 1806-9290 1806-9290 1516-3598 |
| DOI: | 10.1590/S1516-35982010001200019 |