Performance evaluation of broilers fed diets containing probiotic and different nucleotides levels

  • João Batista Canevari Bruno Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Ricardo de Albuquerque Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Leonila Ester Raspantini Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Patologia, Centro de Pesquisa em Toxicologia Veterinária, São Paulo, SP
  • Estela Kobashigawa Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Zootecnia, Pirassununga, SP
  • Messias Alves da Trindade Neto Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Lucio Francelino Araújo Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Zootecnia, Pirassununga, SP
  • Ramalho José Barbosa Rodrigueiro CJ do Brasil, São Paulo, SP
Keywords: Additive, Feeding, Performance, Nucleic Acid Base, Pyrimidine and Purine

Abstract

The objective of this study was to evaluate the performance of broilers fed diets containing a commercial probiotic and different levels of nucleotides. One thousand and fifty chicks 1-d male were reared in a randomized experimental design with five replications of each treatment, distributed in 30 experimental boxes with 35 birds each. The diets contained corn and soybean meal with six different nucleotídes levels (0; 100; 200; 300; 400 and 500 grams for ton of ration), and the different nucleotides levels were used in the initial phase (1 to 21 days of age) and growth phase (22 to 35 days of age). During the final phase (36 to 42 days) nucleotides were removed from the feed. There was improvement on broilers performance in the period from 1 to 21 days of age, demonstrating proportionality between nucleotides level in the diet of broilers and body weight of the birds. Feed conversion at 21 days of age was directly proportional to nucleotides level in the diet. Body weight at 35 days of age, also had a linear behavior, similar to the period from 1 to 21 days, indicating that the nucleotides level in the feed improved the performance. Plasma uric acid concentration demonstrated quadratic effect at 21 days of age, showing that 231,59 grams of nucleotides for ton of feed had the minimum level of plasma uric acid concentration. At 35 days of age, concentration of 208,99 g of nucleotides for ton of feed had the minimum level of plasma uric acid concentration. No effects were observed in the final period (35 to 42 days of age) and total period (1 to 42 days of age) it was not demonstrated effect of the contrasts tested in this study.

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Published
2012-02-03
How to Cite
Bruno, J. B., Albuquerque, R., Raspantini, L. E., Kobashigawa, E., Trindade Neto, M., Araújo, L., & Rodrigueiro, R. J. (2012). Performance evaluation of broilers fed diets containing probiotic and different nucleotides levels. Brazilian Journal of Veterinary Research and Animal Science, 49(1), 5-11. https://doi.org/10.11606/issn.2318-3659.v49i1p5-11
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