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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
10/11/2020 |
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Data da última atualização: |
10/11/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, R. O. F. dos; BASSI, L. S.; SCHRAMM, V. G.; ROCHA, C. da; DAHLKE, F.; KRABBE, E. L.; MAIORKA, A. |
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Afiliação: |
RONAN OMAR FERNANDES DOS SANTOS, UFPR; LUCAS SCHMIDT BASSI, UFPR; VINÍCUIS GONSALES SCHRAMM, UFPR; CHAIANE DA ROCHA, UFPR; FABIANO DAHLKE, UFSC; EVERTON LUIS KRABBE, CNPSA; ALEX MAIORKA, UFPR. |
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Título: |
Effect of conditioning temperature and retention time on pellet quality, ileal digestibility, and growth performance of broiler chickens. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Livestock Science, v. 240, 2020. |
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DOI: |
https://doi.org/10.1016/j.livsci.2020.104110 |
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Idioma: |
Português |
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Conteúdo: |
Abstract: Eight broiler chicken diets were produced by using 2 pellet conditioning temperatures (65 and 85°C) and 4 pellet retention times in the conditioner (3, 9, 14, and 20 s). The effect of dietary treatments on pellet physical quality (intact pellet percentage, pellet hardness, pellet durability index, and water activity), growth performance (0 to 21 and 0 to 42 d), apparent ileal digestibility (CAID) of dry matter, crude protein and starch, and ileal digestible energy (IDE) was evaluated. 1,536 broiler chickens were randomly assigned to 8 dietary treatments (8 replicates of 24 chickens each). On d 42, 2 chickens per replicate were randomly selected for ileal content collection to evaluate dietary CAID and IDE. The greater conditioning temperature (85°C) improved pellet percentage, durability, and hardness (P< 0.001), and promoted greater feed intake, but also increased feed conversion by 1.2% (0 to 42 d, P < 0.05). The retention time of 20 s enhanced both weight gain and feed conversion (P < 0.05). Multiple interactions were observed for digestibility traits (P < 0.001). At 65°C, CAID of dry matter, crude protein and starch, and IDE increased with longer retention times. However, all digestibility coefficients and IDE decreased when diet was conditioned at 85°C and retained for more than 9 s. In conclusion, conditioning at 85°C with longer retention times improved pellet physical quality, but reduced digestibility traits and growth performance of broiler chickens. However, conditioning at 65°C with retention times shorter than 14 s also had detrimental effects on ileal nutrient digestibility, digestible energy, and growth performance. MenosAbstract: Eight broiler chicken diets were produced by using 2 pellet conditioning temperatures (65 and 85°C) and 4 pellet retention times in the conditioner (3, 9, 14, and 20 s). The effect of dietary treatments on pellet physical quality (intact pellet percentage, pellet hardness, pellet durability index, and water activity), growth performance (0 to 21 and 0 to 42 d), apparent ileal digestibility (CAID) of dry matter, crude protein and starch, and ileal digestible energy (IDE) was evaluated. 1,536 broiler chickens were randomly assigned to 8 dietary treatments (8 replicates of 24 chickens each). On d 42, 2 chickens per replicate were randomly selected for ileal content collection to evaluate dietary CAID and IDE. The greater conditioning temperature (85°C) improved pellet percentage, durability, and hardness (P< 0.001), and promoted greater feed intake, but also increased feed conversion by 1.2% (0 to 42 d, P < 0.05). The retention time of 20 s enhanced both weight gain and feed conversion (P < 0.05). Multiple interactions were observed for digestibility traits (P < 0.001). At 65°C, CAID of dry matter, crude protein and starch, and IDE increased with longer retention times. However, all digestibility coefficients and IDE decreased when diet was conditioned at 85°C and retained for more than 9 s. In conclusion, conditioning at 85°C with longer retention times improved pellet physical quality, but reduced digestibility traits and growth performance of broiler chickens. Howe... Mostrar Tudo |
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Palavras-Chave: |
Conditioning time; Desempenho de crescimento. |
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Thesagro: |
Digestibilidade; Frango de Corte. |
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Thesaurus Nal: |
Broiler chickens; Digestibility; Feed formulation; Growth performance; Pellets. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02640naa a2200313 a 4500
001 2126443
005 2020-11-10
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.livsci.2020.104110$2DOI
100 1 $aSANTOS, R. O. F. dos
245 $aEffect of conditioning temperature and retention time on pellet quality, ileal digestibility, and growth performance of broiler chickens.$h[electronic resource]
260 $c2020
520 $aAbstract: Eight broiler chicken diets were produced by using 2 pellet conditioning temperatures (65 and 85°C) and 4 pellet retention times in the conditioner (3, 9, 14, and 20 s). The effect of dietary treatments on pellet physical quality (intact pellet percentage, pellet hardness, pellet durability index, and water activity), growth performance (0 to 21 and 0 to 42 d), apparent ileal digestibility (CAID) of dry matter, crude protein and starch, and ileal digestible energy (IDE) was evaluated. 1,536 broiler chickens were randomly assigned to 8 dietary treatments (8 replicates of 24 chickens each). On d 42, 2 chickens per replicate were randomly selected for ileal content collection to evaluate dietary CAID and IDE. The greater conditioning temperature (85°C) improved pellet percentage, durability, and hardness (P< 0.001), and promoted greater feed intake, but also increased feed conversion by 1.2% (0 to 42 d, P < 0.05). The retention time of 20 s enhanced both weight gain and feed conversion (P < 0.05). Multiple interactions were observed for digestibility traits (P < 0.001). At 65°C, CAID of dry matter, crude protein and starch, and IDE increased with longer retention times. However, all digestibility coefficients and IDE decreased when diet was conditioned at 85°C and retained for more than 9 s. In conclusion, conditioning at 85°C with longer retention times improved pellet physical quality, but reduced digestibility traits and growth performance of broiler chickens. However, conditioning at 65°C with retention times shorter than 14 s also had detrimental effects on ileal nutrient digestibility, digestible energy, and growth performance.
650 $aBroiler chickens
650 $aDigestibility
650 $aFeed formulation
650 $aGrowth performance
650 $aPellets
650 $aDigestibilidade
650 $aFrango de Corte
653 $aConditioning time
653 $aDesempenho de crescimento
700 1 $aBASSI, L. S.
700 1 $aSCHRAMM, V. G.
700 1 $aROCHA, C. da
700 1 $aDAHLKE, F.
700 1 $aKRABBE, E. L.
700 1 $aMAIORKA, A.
773 $tLivestock Science$gv. 240, 2020.
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| 16. |  | IEDE, E. T. Manejo integrado de pragas florestais. In: SEMINARIO FLORESTAL DO SUDOESTE DO PARANA, 2., 1998, Francisco Beltrao. 2. Seminario... Curitiba: Secretaria de Estado do Meio Ambiente e Recursos Hidricos / IAP / Diretoria de Desenvolvimento Florestal. Escritorio Regional de Francisco Beltrao, 1998. 3 p.| Biblioteca(s): Embrapa Florestas. |
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