Growth curves of broilers fed different nutritional relationships using the Gompertz model

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dc.creatorLuís Filipe Villas-Bôas de Freitas
dc.creatorAntônio Gilberto Bertechini
dc.creatorAlisson Hélio Sampaio Clemente
dc.creatorFelipe Augusto Fernandes
dc.creatorDiego Bauth
dc.creatorTales Jesus Fernandes
dc.date2023
dc.date.accessioned2026-07-07T03:58:41Z
dc.descriptionThe study aimed to evaluate performance and growth curves of broilers fed different nutritional relations. A total of 1,440 Cobb-500 male day-old chicks were assigned to eight treatments in a 2 x 2 x 2 factorial arrangement with six replicates of 30 birds each. The main factors were nutritional density (control and high), lysine source (HCl and sulfate), and calcium pidolate (presence and absence). Analyses were made for body weight gain (BWG), and feed conversion rate (FCR) at 21, and 42 days of age. The growth curves were adjusted by weighing a bird per plot every three days. Data for BWG were tested by ANOVA to evaluate the effects of treatments and their interactions at 5% significance, and the Gompertz model was adjusted by NLS. Birds fed a high nutritional density had higher BWG and lower FCR. Calcium pidolate and different sources of lysine did not influence the FCR of broilers, however a triple interaction was evidenced for BWG at 1 to 42 days of age. The day with maximum gain adjusted by Gompertz of all treatments was at the 32nd day of age and the maximum weight (A) was around 5.85 kg.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303175504012
dc.identifierhttps://www.redalyc.org/journal/3031/303175504012/
dc.identifierhttps://www.redalyc.org/journal/3031/303175504012/html/
dc.identifierhttps://www.redalyc.org/journal/3031/303175504012/303175504012.epub
dc.identifierhttps://www.redalyc.org/journal/3031/303175504012/movil
dc.identifierhttps://doi.org/10.4025/actascianimsci.v45i1.58287
dc.identifier.urihttp://hdl.handle.net/123456789/449293
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3031
dc.rightsActa Scientiarum. Animal Sciences
dc.sourceActa Scientiarum. Animal Sciences (Brasil) Vol.45
dc.subjectAgrociencias
dc.titleGrowth curves of broilers fed different nutritional relationships using the Gompertz model
dc.typeartículo científico

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Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá