Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1154701
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dc.contributor.authorMARX, F. O.
dc.contributor.authorALVAREZ, M. V. N.
dc.contributor.authorBASSI, L. S.
dc.contributor.authorFÉLIX, A. P.
dc.contributor.authorKRABBE, E. L.
dc.contributor.authorOLIVEIRA, S. G.
dc.contributor.authorMAIORKA, A.
dc.date.accessioned2023-06-29T19:27:01Z-
dc.date.available2023-06-29T19:27:01Z-
dc.date.created2023-06-29
dc.date.issued2023
dc.identifier.citationLivestock Science, v. 274, n. 105268, 2023.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1154701-
dc.descriptionAbstract: The formulation of diets that adequately meet energy requirements in the different phases of broiler chicken production is of the utmost importance. The objective of this study was to determine the optimal content of metabolizable energy (ME) for broiler chickens in various production phases using different statistical models. A total of 900 broiler chickens were assigned to 5 treatments with 9 replicates of 20 broiler chickens each from 21 to 42 d of age in a completely randomized design. Experimental diets were based on corn and soybean meal and formulated to meet the nutritional requirements of broiler chickens, except for ME requirements. Dietary treatments consisted of 5 pelleted/crushed diets with increasing levels of ME: T1 to T5 (2,850 to 3,250 kcal/kg), divided into grower (21 to 35 d) and finisher (35 to 42 d) phases. Feed intake (FI), body weight gain (BWG), feed conversion ratio (FCR), total energy intake, efficiency of energy use for BWG, and carcass and cuts yields were determined. The ideal ME content for best FCR was determined with the use of quadratic polynomial (QP), segmented, and linear response plateau models (LRP). In all evaluated periods, BWG was not influenced by ME, whereas FI and FCR decreased linearly with increasing ME. Total energy intake increased and the energy use efficiency for BWG decreased with greater ME (P < 0.05). Neither carcass nor cuts yields were influenced by dietary ME. The ideal dietary ME content differed between statistical models. In conclusion, based on FCR results, the QP regression model presented the best fit of the data in the grower phase, indicating an optimal content of metabolizable energy for feed conversion of 3,264 kcal/kg, whereas LRP presented the best data adjustment in the finisher phase, indicating 3,224 kcal/kg of ME as optimal.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectDesempenho de crescimento
dc.subjectOptimal energy content
dc.titleUse of statistical models to determine the optimal concentration of metabolizable energy for growth performance of broiler chickens.
dc.typeArtigo de periódico
dc.subject.thesagroFrango de Corte
dc.subject.thesagroNutrição Animal
dc.subject.thesagroMetabolismo Energético
dc.subject.nalthesaurusBroiler chickens
dc.subject.nalthesaurusGrowth performance
dc.subject.nalthesaurusMetabolizable energy
dc.subject.nalthesaurusStatistical models
riaa.ainfo.id1154701
riaa.ainfo.lastupdate2023-06-29
dc.identifier.doihttps://doi.org/10.1016/j.livsci.2023.105268
dc.contributor.institutionFRANCIELLE DE OLIVEIRA MARX, Universidade Federal do Paraná; MARCUS VINÍCIUS NIZ ALVAREZ, Universidade Estadual Paulista; LUCAS SCHIMIDT BASSI, Universidade Federal do Paraná; AMANDA PORTELA FELIX, Universidade Federal do Paraná; EVERTON LUIS KRABBE, CNPSA; SIMONE GISELE DE OLIVEIRA, Universidade Federal do Paraná; ALEX MAIORKA, Universidade Federal do Paraná.
Aparece nas coleções:Artigo em periódico indexado (CNPSA)

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