Data/hora: 16/06/2024 06:28:59

Provedor de dados: | 96
País: | Brazil
Título: | Structural and morphogenical characteristics of black oats and Italian ryegrass on pasture submitted to two grazing intensities
Autores: | Confortin,Anna Carolina Cerato; Rocha,Marta Gomes da; Quadros,Fernando Luiz Ferreira de; Glienke,Carine Lisete; Rossi,Guilherme Ebling; Moraes,Andréia Barros de.
Data: | 2010-11-01
Ano: | 2010
Palavras-chave: | Intermittent grazing; Leaf lifespan; Marked tillers; Sheep; Trifolium pratense L.
Resumo: | Morphogenical and structural characteristics of black oats (Avena strigosa Schreb.) and Italian ryegrass (Lolium multiflorum Lam.) on pastures managed under two grazing intensities were quantified by using marked tiller technique. The expected intensities of disappearance of forage mass initial value were 35% (low) and 65% (high). Experimental animals were sheep and interval among grazing was determined through 300 degree-day thermal sum. The experimental design was completely randomized with two grazing intensities and two replicates. Leaf blades of oats and ryegrass were removed at an average proportion of 57.5% of their initial length for both grazing intensities. Among the morphogenical characteristics of oats, only elongation rate of defoliate leaf differed between grazing intensities, with values of 0.059 and 0.081 cm/degree-day for low and high intensities, respectively. Grazing intensities did not alter structural characteristics of oats mixed with ryegrass and red clover. High grazing intensity enables maintenance of a higher number of ryegrass expanding leaves (1.7 leaves/tiller), thus it is suggested for management of pastures with oats mixed with Italian ryegrass and red-clover on intermittent grazing.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100007
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982010001100007
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.39 n.11 2010
Fonte: | info:eu-repo/semantics/openAccess