Effect of Dietary Fiber, Genetic Strain and Age on the Digestive Metabolism of Broiler Chickens
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Fundação APINCO de Ciência e Tecnologia Avícolas
2013
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| _version_ | 1876482783267782656 |
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| author | RV Krás |
| author_facet | RV Krás |
| contents | Effect of Dietary Fiber, Genetic Strain and Age on the Digestive Metabolism of Broiler Chickens RV Krás A de M Kessler AML Ribeiro JD Henn L Bockor AF Sbrissia Agrociencias Age fed pair fiber strain In this study, 360 male broilers, out of which 240 of a fast-growing strain (Cobb500), and 120 of a slow-growing strain (Label Rouge), were used to evaluate the effect of dietary fiber on digesta transit time and digestive metabolism during the period of 1 to 42 days of age. A completely randomized experimental design with 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 diets (a 3100 kcal ME/kg low-fiber diet -LFD- and a 2800 kcal ME/ kg high-fiber diet -HFD- with 14% wheat bran and 4% oat hulls). HFD-fed birds presented lower ME retention (p < 0.001) and lower dry matter metabolizability (DMM) (p < 0.001), which is possibly related to the shorter digesta transit time observed in these birds (p < 0.001). DMM was reduced with age, whereas metabolizable energy remained almost constant (p < 0.001) independently of strain. This may be related to the increase in feed intake as birds age. The slow- growing strain did not present better utilization of the high-fiber diet as compared to the fast-growing strain in none of the analyzed ages, even though showing a significant better use of fiber and dietary energy from 31 days of age. 2013 artículo científico 1516-635X https://www.redalyc.org/articulo.oa?id=179727930003 en http://www.redalyc.org/revista.oa?id=1797 Revista Brasileira de Ciência Avícola application/pdf Fundação APINCO de Ciência e Tecnologia Avícolas Revista Brasileira de Ciência Avícola (Brasil) Num.2 Vol.15 |
| format | Artículo científico |
| id | redalyc_179727930003 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Fundação APINCO de Ciência e Tecnologia Avícolas |
| spellingShingle | Effect of Dietary Fiber, Genetic Strain and Age on the Digestive Metabolism of Broiler Chickens RV Krás Agrociencias Age fed pair fiber strain Effect of Dietary Fiber, Genetic Strain and Age on the Digestive Metabolism of Broiler Chickens RV Krás A de M Kessler AML Ribeiro JD Henn L Bockor AF Sbrissia Agrociencias Age fed pair fiber strain In this study, 360 male broilers, out of which 240 of a fast-growing strain (Cobb500), and 120 of a slow-growing strain (Label Rouge), were used to evaluate the effect of dietary fiber on digesta transit time and digestive metabolism during the period of 1 to 42 days of age. A completely randomized experimental design with 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 diets (a 3100 kcal ME/kg low-fiber diet -LFD- and a 2800 kcal ME/ kg high-fiber diet -HFD- with 14% wheat bran and 4% oat hulls). HFD-fed birds presented lower ME retention (p < 0.001) and lower dry matter metabolizability (DMM) (p < 0.001), which is possibly related to the shorter digesta transit time observed in these birds (p < 0.001). DMM was reduced with age, whereas metabolizable energy remained almost constant (p < 0.001) independently of strain. This may be related to the increase in feed intake as birds age. The slow- growing strain did not present better utilization of the high-fiber diet as compared to the fast-growing strain in none of the analyzed ages, even though showing a significant better use of fiber and dietary energy from 31 days of age. 2013 artículo científico 1516-635X https://www.redalyc.org/articulo.oa?id=179727930003 en http://www.redalyc.org/revista.oa?id=1797 Revista Brasileira de Ciência Avícola application/pdf Fundação APINCO de Ciência e Tecnologia Avícolas Revista Brasileira de Ciência Avícola (Brasil) Num.2 Vol.15 |
| title | Effect of Dietary Fiber, Genetic Strain and Age on the Digestive Metabolism of Broiler Chickens |
| topic | Agrociencias Age fed pair fiber strain |
| url | https://www.redalyc.org/articulo.oa?id=179727930003 |