Revista Brasileira de Ciência Avícola | |
Effect of dietary fiber and genetic strain on the performance and energy balance of broiler chickens | |
Rv Krás1  Am Kessler1  Aml Ribeiro1  Jdi Henn1  Ii Dos Santos1  Dp Halfen1  L Bockor1  | |
[1] ,Universidade Federal do Rio Grande do Sul Departamento de Zootecnia Porto Alegre RS | |
关键词: Cobb; Label Rouge; pair-fed; wheat bran; | |
DOI : 10.1590/S1516-635X2013000100003 | |
来源: SciELO | |
【 摘 要 】
The experiment was conducted to evaluate the effect of dietary fiber on the performance and energy balance of broiler chickens of a fast-growing strain (Cobb500) and a slow-growing strain (Label Rokens during the period of 1 one to 42 days of used In total, 360 male broilers (240 fast-grorain and 120 slow-grtrain)were, housed in collective cages. A completely randomized experimental dewith in a 3x2 factorial arrangement was applied, consisting of three groups of birds (slow-growing - SG; fast-growing fed ad libitum - FGAL; and fast-growing pair-fed with SG broilers - FGPF) and two iso-protein dis (a 3100 kcal ME/kg low-fiber diet and a 2800 kcal ME/kg high-fiber diet- Hwith containing 14% wheat bran and 4% oat hulls). Dietary fiber level did not affect feed intake (FI); however, it resulted in lower weight gain (WG) and worse feed conversion ratio (FCR) (p < 0.001) in birds fed the HFD diet due to its lower energy content. The FGPF group presented higher WG than SG and better FCR (p < 0.001), indicating that fast-growing birds present better performance than SG broilers, even under restricted feed intake. The SG group retained more energy relative to body weight (p < 0.001), which is associated to higher body fat retention in this strain (p < 0.001). The slow-growing strain did not present better use of high-fiber diet than fast-growing strain as expected.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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