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Provedor de dados:  45
País:  Brazil
Título:  Apparent selectivity of sheep in deferred marandu palisadegrass pastures with variable initial heights
Autores:  Santos,M.E.R.
Afonso,L.E.F.
Carvalho,B.H.R.
Rêgo,A.C.
Queiroz,G.J.S.
Medica,J.A.S.
Moraes,L.S.
Carmo,L.L.S.
Data:  2019-10-01
Ano:  2019
Palavras-chave:  Pasture deferment
Forage mass
Hand-plucked sample
Urochloa brizantha syn. Brachiaria brizantha
Resumo:  ABSTRACT The objective of this study was to evaluate the apparent selectivity of sheep in marandu palisadegrass (Urochloa brizantha cv. Marandu) pastures with four heights at the beginning of the deferment period (15, 25, 35 and 45cm). The deferment period was 92 days and started on 03/21/2014. Evaluations occurred in the beginning (first week), middle (45th day) and end (92nd day) of the grazing period, in winter (06/21/2014 to 09/21/2014). Deferred pastures with 15 and 25cm presented lower forage mass (FM), but higher live leaf (LL) percentage in FM than deferred pastures with 35 and 45cm. The live stem percentage in the FM and the apparent selectivity index (ASI) of the LL were superior in the deferred pasture with 45cm. The dead stem (DS) percentage in the grazing simulation (GS) and the ASI of this morphological component were lower in the pasture with 15cm, compared to the deferred pasture with 45cm. The FM and the LL percentages in FM and in the GS sample decreased, while the DS percentages in FM and in GS sample increased with the grazing period. Marandu palisadegrass with 15cm at beginning of the deferment period improves the morphology of the deferred pasture. Selective grazing is difficult during the grazing period.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000501727
Editor:  Universidade Federal de Minas Gerais, Escola de Veterinária
Relação:  10.1590/1678-4162-10750
Formato:  text/html
Fonte:  Arquivo Brasileiro de Medicina Veterinária e Zootecnia v.71 n.5 2019
Direitos:  info:eu-repo/semantics/openAccess
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