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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
05/08/2021 |
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Data da última atualização: |
05/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BRITO, C. O.; CUNHA-FILHO, O. G.; SILVA, C. M.; VIEIRA, J. S.; DEL VESCO, A. P.; FEITOSA, V. E. M.; BARBOSA, L. T.; RIBEIRO JÚNIOR, V.; TAVERNARI, F. de C. |
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Afiliação: |
CLAUDSON O. BRITO, UFS; OCTAVIO G. CUNHA-FILHO, UFS; CAMILLA MENDONÇA SILVA, UFS; JODNES S. VIEIRA, UFS; ANA PAULA DEL VESCO, UFS; VICTOR E. M. FEITOSA, UFS; LEANDRO T. BARBOSA, UFS; VALDIR RIBEIRO JUNIOR, UFS; FERNANDO DE CASTRO TAVERNARI, CNPSA. |
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Título: |
Estimate of body growth curve and feed intake of free-range chickens receiving different levels of digestible lysine. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Spanish Journal of Agricultural Research, v. 19, n.1, ed. e0602, 2021. |
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DOI: |
https://doi.org/10.5424/sjar/2021191-15815 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract Aim of study: To adjust nonlinear Gompertz model to describe the body growth and feed intake (FI) of free-range chickens of the CPK (Color Plumé) strain, receiving different levels of digestible lysine (dig-Lys), from 21 to 77 days of age. Area of study: São Cristovão, Sergipe, Brazil. Material and methods: A total of 432 one-day-old unsexed chickens were used in the study. At 21 days of age, the birds were assigned to four treatments (0.85%; 0.97%; 1.09%; 1.21%) of dig-Lys, in a completely randomized design with four replicates, with 27 birds per experimental unit. The Gompertz model was used to estimate bird growth curves related to body weight (BW) and FI at each Lys level. Main results: The tests of comparison between the parameters of the Gompertz model for each Lys level showed that parameter A varied, while parameters B (0.0329) and C (45.819) did not differ significantly. In parameter A, the dig-Lys level of 0.97% provided the highest BW estimate at maturity and maximum BW at the inflection point. Research highlights: Use of non-linear models to predict nutritional requirements, helps farmers to optimize management decisions and, thus, maximize their profit. According to Gompertz model, it was possible to infer that the inclusion of 0.97% dig-Lys in the diet of mixed batches of free-range chickens of the CPK strain meets their nutritional requirements. |
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Palavras-Chave: |
Color Plumé. |
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Thesagro: |
Aminoácido; Condição Corporal; Estimulante de Crescimento Animal; Etapa de Desenvolvimento Animal; Galinha Caipira; Lisina; Nutrição Animal. |
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Thesaurus Nal: |
Amino acids; Animal nutrition; Broiler chickens; Chickens; Lysine; Nonlinear models. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02610naa a2200397 a 4500
001 2133262
005 2021-08-05
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5424/sjar/2021191-15815$2DOI
100 1 $aBRITO, C. O.
245 $aEstimate of body growth curve and feed intake of free-range chickens receiving different levels of digestible lysine.$h[electronic resource]
260 $c2021
520 $aAbstract Aim of study: To adjust nonlinear Gompertz model to describe the body growth and feed intake (FI) of free-range chickens of the CPK (Color Plumé) strain, receiving different levels of digestible lysine (dig-Lys), from 21 to 77 days of age. Area of study: São Cristovão, Sergipe, Brazil. Material and methods: A total of 432 one-day-old unsexed chickens were used in the study. At 21 days of age, the birds were assigned to four treatments (0.85%; 0.97%; 1.09%; 1.21%) of dig-Lys, in a completely randomized design with four replicates, with 27 birds per experimental unit. The Gompertz model was used to estimate bird growth curves related to body weight (BW) and FI at each Lys level. Main results: The tests of comparison between the parameters of the Gompertz model for each Lys level showed that parameter A varied, while parameters B (0.0329) and C (45.819) did not differ significantly. In parameter A, the dig-Lys level of 0.97% provided the highest BW estimate at maturity and maximum BW at the inflection point. Research highlights: Use of non-linear models to predict nutritional requirements, helps farmers to optimize management decisions and, thus, maximize their profit. According to Gompertz model, it was possible to infer that the inclusion of 0.97% dig-Lys in the diet of mixed batches of free-range chickens of the CPK strain meets their nutritional requirements.
650 $aAmino acids
650 $aAnimal nutrition
650 $aBroiler chickens
650 $aChickens
650 $aLysine
650 $aNonlinear models
650 $aAminoácido
650 $aCondição Corporal
650 $aEstimulante de Crescimento Animal
650 $aEtapa de Desenvolvimento Animal
650 $aGalinha Caipira
650 $aLisina
650 $aNutrição Animal
653 $aColor Plumé
700 1 $aCUNHA-FILHO, O. G.
700 1 $aSILVA, C. M.
700 1 $aVIEIRA, J. S.
700 1 $aDEL VESCO, A. P.
700 1 $aFEITOSA, V. E. M.
700 1 $aBARBOSA, L. T.
700 1 $aRIBEIRO JÚNIOR, V.
700 1 $aTAVERNARI, F. de C.
773 $tSpanish Journal of Agricultural Research$gv. 19, n.1, ed. e0602, 2021.
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