Formulação de ração para frangos de corte de crescimento lento utilizando valores de energia metabolizável dos ingredientes determinada com linhagens de crescimento lento e rápido

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Abstract

We conducted this work aiming to evaluate the effect of using the metabolizable energy of food, determined by different strains (AMEn Cobb and AMEn Isa Label), on diet formulation for slow growing broilers on the performance, carcass characteristics, biometrical morphometry measures of digestive organs and energetic values of the experimental diets. A total of 72 male broiler chickens, Isa Label, were used and the experiment followed a randomized blocks design with two treatments (feedstuff energy), and six replicates of six birds each. The averages were compared by Tukey test at 5% probability. The treatments consisted in formulating diets using the energy of corn and soybean meal determined by Cobb and Isa Label strains. The experiment was conducted in the starter phase and the birds consumed the diets for 28 days. The diet formulated based on AMEn Cobb or Isa Label did not affect the performance, biometrical and morphometry measures of digestive organs and carcass characteristics. However, the diet formulated according to AMEn Isa Label resulted in better caloric conversion, bioeconomic energetic conversion and lower deposition of abdominal fat. AMEn of the diets similar to those calculated levels were determined with the formulation based on AMEn of corn and soybean meal determined for theline Isa Label (2.750 x 2.728 kcal/kg). Values of AMEn of corn and soybean meal determined with Isa Label strains not affect the performance of slow growing broilers, but resulted in lower abdominal fat according to the desires of consumers for alternative poultry.

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Santos, F. R., Stringhini, J. H., Minafra, C. S., Almeida, R. R., Oliveira, P. R., Duarte, E. F., … Café, M. B. (2014). Formulação de ração para frangos de corte de crescimento lento utilizando valores de energia metabolizável dos ingredientes determinada com linhagens de crescimento lento e rápido. Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, 66(6), 1839–1846. https://doi.org/10.1590/1678-6402

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