Effects of different egg turning frequencies on incubation efficiency parameters

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorOliveira, Gabriel da Silva-
Autor(es): dc.creatorSantos, Vinícius Machado dos-
Autor(es): dc.creatorRodrigues, Jullyana Carvalho-
Autor(es): dc.creatorNascimento, Sheila Tavares-
Data de aceite: dc.date.accessioned2021-10-14T18:34:11Z-
Data de disponibilização: dc.date.available2021-10-14T18:34:11Z-
Data de envio: dc.date.issued2020-11-25-
Data de envio: dc.date.issued2020-11-25-
Data de envio: dc.date.issued2020-09-
Fonte completa do material: dc.identifierhttps://repositorio.unb.br/handle/10482/39659-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.psj.2020.05.045-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/634767-
Descrição: dc.descriptionThis study aimed to evaluate the effects of different egg turning frequencies on incubation efficiency parameters. Nine hundred sixty brown fertile eggs, with an average weight of 52.20 ± 0.85 g, from 38-week-old CJD (Carijó Pesadão) breeder hens were randomly distributed among 4 treatments before incubation. Each treatment corresponded to a turning frequency, being 24 (control), 12, 6, or 3 times per day, at an angle of 45°, until day 18 of incubation. The experimental design was a randomized complete block design with 4 treatments. Analysis of the incubation parameters was based on 6 replications per treatment. The eggs that were turned 12, 6, and 3 times per day exhibited a decrease in hatchability of the fertile eggs of 6.61, 15.51, and 19.70%, respectively, when compared with the control group (91.84 ± 2.73%). With a decrease in turning frequency, there was a gradual increase in early (2.84 ± 1.89 to 14.31 ± 1.82%) and late (3.57 ± 1.39 to 8.05 ± 1.24%) mortality rates. An egg turning frequency of 24 times per day during incubation provided high hatchability rates. In contrast, the turning frequencies of 12, 6, and 3 times per day showed significant losses in hatchability.-
Formato: dc.formatapplication/pdf-
Publicador: dc.publisherElsevier Inc. on behalf of Poultry Science Association Inc.-
Direitos: dc.rightsAcesso Aberto-
Direitos: dc.rightsThis is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).-
Palavras-chave: dc.subjectFrango de corte-
Palavras-chave: dc.subjectFrango de corte - embrião - mortalidade-
Palavras-chave: dc.subjectOvos - incubação-
Título: dc.titleEffects of different egg turning frequencies on incubation efficiency parameters-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional – UNB

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