Total methionine + cystine levels in diets for Muscovy ducks in housing

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dc.creatorJulmar da Costa Feijó
dc.creatorGilberto Batista Viana
dc.creatorFernanda Moura Fernandes Silva
dc.creatorJuliana da Costa Feijó
dc.creatorFrancisco Alberto de Lima Chaves
dc.creatorJoão Paulo Ferreira Rufino
dc.creatorFrank George Guimarães Cruz
dc.date2024
dc.date.accessioned2026-07-07T03:58:43Z
dc.descriptionThe present study aimed to determine the ideal levels of total methionine + cystine for Muscovy ducks in confinement. Two hundred and forty Muscovy ducks of the creole strain were distributed in a completely randomized experimental design where the treatments consisted of six nutritional plans with different levels of total methionine + cystine, and four replicates (two with males only and two with females only), each with 10 Muscovy ducks. The nutritional plans considered the requirements in the initial, growing, and finishing stages. The birds had their performance evaluated weekly, and at 90 days of age, eight birds (four males and four females) from each treatment were slaughtered for the evaluation of carcass traits. Nutritional plan 3 provided a significant (p < 0.05) reduction in feed intake and an increase (p < 0.05) in weight gain, causing a proportional reduction (p < 0.05) in feed conversion. Levels above and below the requirements in this nutritional plan caused a significant (p < 0.05) loss in performance. Muscovy ducks fed with nutritional plan 3 also presented better (p < 0.05) carcass traits. A significant difference (p < 0.05) in carcass development was observed between males and females, with males showing better results.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303179699022
dc.identifierhttps://www.redalyc.org/journal/3031/303179699022/
dc.identifierhttps://www.redalyc.org/journal/3031/303179699022/html/
dc.identifierhttps://www.redalyc.org/journal/3031/303179699022/303179699022.epub
dc.identifierhttps://www.redalyc.org/journal/3031/303179699022/movil
dc.identifier10.4025/actascianimsci.v46i1.68987
dc.identifier.urihttp://hdl.handle.net/123456789/449311
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.46
dc.subjectAgrociencias
dc.titleTotal methionine + cystine levels in diets for Muscovy ducks in housing
dc.typeartículo científico

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Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá