Data/hora: 11/06/2024 05:24:57

Provedor de dados: | 96
País: | Brazil
Título: | Forage mass and stocking rate of elephant grass pastures managed under agroecological and conventional systems
Autores: | Olivo,Clair Jorge; Agnolin,Carlos Alberto; Aguirre,Priscila Flôres; Bem,Cláudia Marques de; Araújo,Tiago Luís da Ros de; Diehl,Michelle Schalemberg; Meinerz,Gilmar Roberto.
Data: | 2014-06-01
Ano: | 2014
Palavras-chave: | Lactating cows; Lolium multiflorum; Pennisetum purpureum; Production systems; Rotational stocking.
Resumo: | The objective was to evaluate elephant grass (Pennisetum purpureum Schum.) pastures, under the agroecological and conventional systems, as forage mass and stocking rate. In the agroecological system, the elephant grass was established in rows spaced by 3.0 m from each other. During the cool season ryegrass (Lolium multiflorum Lam.) was established between these rows, which allowed the development of spontaneous growth species during the warm season. In the conventional system the elephant grass was established singularly in rows spaced 1.4 m from each other. Organic and chemical fertilizers were applied at 150 kg of N/ha/year with in the pastures under agroecological and conventional systems, respectively. Lactating Holstein cows which received 5.0 kg/day supplementary concentrate feed were used for evaluation. The experimental design was completely randomized, with two treatments (agroecological and conventional systems) two replications (paddocks) and independent evaluations (grazing cycles). The pastures were used during the whole year for the agroecological system and for 195 days in the conventional year. The average values of forage mass were 3.5 and 4.2 t/ha and the stocking rates were 2.08 and 3.23 AU/ha for the respective systems. The results suggest that the use of the elephant grass under the agroecological system allows for best distribution of forage and stocking rate to be more uniform throughout the year than the use of elephant grass in conventional system.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000600289
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982014000600002
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.43 n.6 2014
Fonte: | info:eu-repo/semantics/openAccess