Effects of exogenous amylase on the in vitro digestion kinetics of whole-crop maize silages made from flint or dent grain type at different phenological stages grown in tropical condition

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniv Estadual Sudoeste Bahia-
Autor(es): dc.contributorDSM Nutr Prod SA-
Autor(es): dc.contributorUniv Fed Sul & Sudeste Para-
Autor(es): dc.contributorUniv Fed Sao Joao del Rei-
Autor(es): dc.creatorSilva, Abias Santos [UNESP]-
Autor(es): dc.creatorRibeiro Pereira, Luiz Gustavo-
Autor(es): dc.creatorPedreira, Marcio dos Santos-
Autor(es): dc.creatorMachado, Fernanda Samarini-
Autor(es): dc.creatorCampos, Mariana Magalhaes-
Autor(es): dc.creatorCortinhas, Cristina Simoes-
Autor(es): dc.creatorAcedo, Tiago Sabella-
Autor(es): dc.creatorSantos, Rafael Dantas dos-
Autor(es): dc.creatorPacheco Rodrigues, Joao Paulo-
Autor(es): dc.creatorMauricio, Rogerio Martins-
Autor(es): dc.creatorTomich, Thierry Ribeiro-
Data de aceite: dc.date.accessioned2022-02-22T00:09:39Z-
Data de disponibilização: dc.date.available2022-02-22T00:09:39Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1111/jpn.13234-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/196511-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/196511-
Descrição: dc.descriptionThe effect of exogenous amylase on the in vitro rumen digestion kinetics of whole-crop maize silage made from dent (RB9004) or flint grain type (RB9308) was evaluated at different phenological stages: soft dough (SOD), early dent (EAD), 1/2 milkline (1/2M) and 3/4 milkline (3/4M). Forage was harvested from 70 to 110 days after sowing. Two rumen-cannulated cows receiving or not exogenous amylase (0.7 g/kg dry matter-DM, provided to achieve 396 kilo Novo units of amylase activity/kg of TMR DM) were used as donor of ruminal fluid. The in vitro gas production kinetics was evaluated according to a dual-pool logistic model. The chemical composition and gas production kinetics were affected by the hybrid and phenological stages. The flint hybrid had lower range for chemical analysis among physiological stages. Harvesting at 1/2M and 3/4M improved DM content, bromatological composition and silage quality parameters compared to dent or flint types. Amylase (i) increased methane (CH4) production and in vitro dry matter digestibility (IVDMD) in 1/2M stage, (ii) improved digestion kinetics by reducing lag time and increasing total gas production and fermentation rates of non-fibrous carbohydrates (NFC) and fibrous carbohydrates (FC), and (iii) increased extent and fermentation rate of NFC and increased fermentation rate of FC fraction in whole-crop maize silages produced from dent or flint types in all phenological stages. Harvesting between 1/2M and 3/4M is the best phenological stage to improve chemical composition and silage quality parameters. Exogenous amylase showed improvements on fibre digestion of silages at 1/2M and 3/4M phenological stages in both grain types of corn.-
Descrição: dc.descriptionDSM Nutritional Products S.A. (Sao Paulo, Brazil)-
Descrição: dc.descriptionUniv Estadual Paulista, Dept Anim Prod, Botucatu, SP, Brazil-
Descrição: dc.descriptionEmbrapa Dairy Cattle, Anim Nutr & Precis Dairy Farming, Juiz De Fora, MG, Brazil-
Descrição: dc.descriptionUniv Estadual Sudoeste Bahia, Dept Rural & Anim Technol, Itapetinga, Brazil-
Descrição: dc.descriptionDSM Nutr Prod SA, Sao Paulo, Brazil-
Descrição: dc.descriptionEmbrapa Semiarid, Forage Crops & Anim Nutr, Petrolina, Brazil-
Descrição: dc.descriptionUniv Fed Sul & Sudeste Para, Inst Studies Humid Trop, Xinguara, Brazil-
Descrição: dc.descriptionUniv Fed Sao Joao del Rei, Dept Agr Sci, Sao Joao Del Rei, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Dept Anim Prod, Botucatu, SP, Brazil-
Formato: dc.format76-87-
Idioma: dc.languageen-
Publicador: dc.publisherWiley-Blackwell-
Relação: dc.relationJournal Of Animal Physiology And Animal Nutrition-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectcarbohydrates-
Palavras-chave: dc.subjectdigestibility-
Palavras-chave: dc.subjectenzyme-
Palavras-chave: dc.subjectharvesting time-
Palavras-chave: dc.subjectmethane-
Título: dc.titleEffects of exogenous amylase on the in vitro digestion kinetics of whole-crop maize silages made from flint or dent grain type at different phenological stages grown in tropical condition-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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