Energy and protein requirements of weaned male and female Saanen goats

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorFigueiredo, F. O. M.-
Autor(es): dc.creatorLeite, R. F.-
Autor(es): dc.creatorSt‐Pierre, N. R.-
Autor(es): dc.creatorResende, K. T.-
Autor(es): dc.creatorAlmeida, A. K.-
Autor(es): dc.creatorSouza, A. P.-
Autor(es): dc.creatorTeixeira, I. A. M. A.-
Data de aceite: dc.date.accessioned2026-02-09T12:03:28Z-
Data de disponibilização: dc.date.available2026-02-09T12:03:28Z-
Data de envio: dc.date.issued2019-02-22-
Data de envio: dc.date.issued2019-02-22-
Data de envio: dc.date.issued2017-10-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br//handle/1/32960-
Fonte completa do material: dc.identifierhttps://onlinelibrary.wiley.com/doi/full/10.1111/jpn.12539-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1153394-
Descrição: dc.descriptionThe objective of this research was to estimate the energy and protein requirements for maintenance and growth in male (castrated and intact) and female Saanen goat kids between 15 and 30 kg BW. To determine the net energy requirements for maintenance (NEm) and the net protein requirements for maintenance (NPm), 75 goats (25 castrated and 26 intact males and 24 females) were used. Twenty‐one goats (seven castrated and eight intact males and six females) were randomly assigned for slaughter to estimate the initial empty body composition. The 54 remaining animals (18 castrated and 18 intact males and 18 females) were randomly assigned in a split‐plot design using a 3 × 3 factorial arrangement with three sexes and three levels of intake (ad libitum and restricted feed to 75% or 50% of the ad libitum intake). Within each sex, six blocks (three goats per block) were formed and one goat was randomly assigned to each level of intake. The 75% and the 50% of ad libitum rationing were determined daily, based on the DMI of the animal fed ad libitum on the previous day. All animals within block were slaughtered when the animal fed ad libitum reached 30 kg BW. The net energy requirements for gain (NEg) and the net protein requirements for gain (NPg) were obtained using 58 animals (20 castrated and 20 intact males and 18 females). The animals were fed ad libitum and slaughtered at targeted BW (15, 23 or 30 kg). Sex did not affect NEg and NPm (277.8 kJ/kg0.75 BW day and 2.98 g CP/kg0.75 BW day respectively), as well as NPg (180.9 ± 6.48 g/kg EBW gain) in Saanen goat kids. However, castrated males and females had similar NEg (varied from 12.6 ± 0.424 to 17.9 ± 1.38 MJ/kg EBW gain), greater than intact males (varied from 9.74 ± 0.420 to 10.7 ± 0.984 MJ/kg EBW gain), as the BW increased from 15 to 30 kg.-
Idioma: dc.languageen-
Publicador: dc.publisherBlackwell Verlag GmbH-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Animal Physiology and Animal Nutrition-
Palavras-chave: dc.subjectGoats - Body composition-
Palavras-chave: dc.subjectComparative slaughter-
Palavras-chave: dc.subjectGrowth phase-
Palavras-chave: dc.subjectCabras - Composição corporal-
Palavras-chave: dc.subjectAbate comparativo-
Palavras-chave: dc.subjectFase de crescimento-
Título: dc.titleEnergy and protein requirements of weaned male and female Saanen goats-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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