Apparent ileal nitrogen digestibility and apparent metabolizable energy corrected to zero nitrogen in broiler chickens fed textured diets and feed restricted at different ages
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| Format: | Artículo científico |
| Langue: | en |
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Universidad del Zulia
2005
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| _version_ | 1876480186373898240 |
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| author | Ana María Arzalluz |
| author_facet | Ana María Arzalluz |
| contents | Apparent ileal nitrogen digestibility and apparent metabolizable energy corrected to zero nitrogen in broiler chickens fed textured diets and feed restricted at different ages Ana María Arzalluz María Urdaneta-Rincón Steven Leeson Hirwin Rincón Veterinaria AME Broilers nitrogen digestibility feed restriction Two experiments were carried out to evaluate the apparent nitrogendigestibility and the apparent metabolizable energy inbroiler chickens fed textured diets and feed restricted. Chicksin experiment 1 were housed in an electrically heated brooderbattery and fed ad libitum or feed-restricted to 90% of birds fedad libitum intake of previous day. Chromic oxide was used as amarker. Birds at 15 d of age were killed and the ileal digestacollected for nitrogen digestibility and AMEn. The apparent nitrogendigestibility was no significantly different (P > 0.05) betweenad libitum (78.9%) and feed-restricted (79.3%) broilersat 15 days of age. There was no difference (P > 0.05) for theapparent metabolizable energy corrected to zero nitrogen(AMEn) between treatments. Chicks in the second experimentwere housed in batteries or cages depending on age of thebird. Birds were fed with diets pelleted, mashed or pelleted butfeed-restricted to 90% of ad libitum intake. Excreta was collectedand wrapped in aluminum foil trays over 72 h, and driedat 65°C. Samples were assay for gross energy and nitrogenevaluations. The AMEn was significantly different (P < 0.01)among chicks fed crumble (3061 Kcal/kg), mash (2994 Kcal/kg),or feed restricted to 90% of ad libitum crumble intake(3087 Kcal/kg). In broiler chickens at 28 and 48 days of age,there were no significant differences (P > 0.05) in the AMEnwhen fed crumble (3355 and 3357 Kcal/kg), mash (3344 and3348 Kcal/kg) or feed restricted (3332 and 3356 Kcal/kg) to90% of ad libitum texture diets intake respectively. It was concludedthat mild feed restriction does not influence ileal nitrogendigestibility or AMEn in young broilers. Texture of dietsonly affected (P < 0.05) the AMEn at early age of birds 2005 artículo científico 0798-2259 https://www.redalyc.org/articulo.oa?id=95915606 en http://www.redalyc.org/revista.oa?id=959 Revista Científica application/pdf Universidad del Zulia Revista Científica (República Bolivariana de Venezuela) Num.6 Vol.XV |
| format | Artículo científico |
| id | redalyc_95915606 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Universidad del Zulia |
| spellingShingle | Apparent ileal nitrogen digestibility and apparent metabolizable energy corrected to zero nitrogen in broiler chickens fed textured diets and feed restricted at different ages Ana María Arzalluz Veterinaria AME Broilers nitrogen digestibility feed restriction Apparent ileal nitrogen digestibility and apparent metabolizable energy corrected to zero nitrogen in broiler chickens fed textured diets and feed restricted at different ages Ana María Arzalluz María Urdaneta-Rincón Steven Leeson Hirwin Rincón Veterinaria AME Broilers nitrogen digestibility feed restriction Two experiments were carried out to evaluate the apparent nitrogendigestibility and the apparent metabolizable energy inbroiler chickens fed textured diets and feed restricted. Chicksin experiment 1 were housed in an electrically heated brooderbattery and fed ad libitum or feed-restricted to 90% of birds fedad libitum intake of previous day. Chromic oxide was used as amarker. Birds at 15 d of age were killed and the ileal digestacollected for nitrogen digestibility and AMEn. The apparent nitrogendigestibility was no significantly different (P > 0.05) betweenad libitum (78.9%) and feed-restricted (79.3%) broilersat 15 days of age. There was no difference (P > 0.05) for theapparent metabolizable energy corrected to zero nitrogen(AMEn) between treatments. Chicks in the second experimentwere housed in batteries or cages depending on age of thebird. Birds were fed with diets pelleted, mashed or pelleted butfeed-restricted to 90% of ad libitum intake. Excreta was collectedand wrapped in aluminum foil trays over 72 h, and driedat 65°C. Samples were assay for gross energy and nitrogenevaluations. The AMEn was significantly different (P < 0.01)among chicks fed crumble (3061 Kcal/kg), mash (2994 Kcal/kg),or feed restricted to 90% of ad libitum crumble intake(3087 Kcal/kg). In broiler chickens at 28 and 48 days of age,there were no significant differences (P > 0.05) in the AMEnwhen fed crumble (3355 and 3357 Kcal/kg), mash (3344 and3348 Kcal/kg) or feed restricted (3332 and 3356 Kcal/kg) to90% of ad libitum texture diets intake respectively. It was concludedthat mild feed restriction does not influence ileal nitrogendigestibility or AMEn in young broilers. Texture of dietsonly affected (P < 0.05) the AMEn at early age of birds 2005 artículo científico 0798-2259 https://www.redalyc.org/articulo.oa?id=95915606 en http://www.redalyc.org/revista.oa?id=959 Revista Científica application/pdf Universidad del Zulia Revista Científica (República Bolivariana de Venezuela) Num.6 Vol.XV |
| title | Apparent ileal nitrogen digestibility and apparent metabolizable energy corrected to zero nitrogen in broiler chickens fed textured diets and feed restricted at different ages |
| topic | Veterinaria AME Broilers nitrogen digestibility feed restriction |
| url | https://www.redalyc.org/articulo.oa?id=95915606 |