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- Title
Produção de cordeiros em pastejo contínuo de azevém anual submetido àadubação nitrogenada.
- Authors
de Pellegrini, Luiz Giovani; Monteiro, Alda Lúcia Gomes; Neumann, Mikael; de Moraes, Aníbal; Filho, Amadeu Bona; Molento, Marcelo Beltrão; de Pellegrin, Ana Carolina Ribeiro Sanquetta
- Abstract
It was evaluated the effect of nitrogen fertilization in ryegrass pasture (Lolium multiflorum Lam.) on the production of meat lamb under continuous grazing. Ryegrass pasture was established under no-tillage cropping in area of animal-crop integration system. The fertilization was held with 60kg of P2O5 ha-1 and 60kg of K2O ha-1. The treatments corresponded to the doses 0; 75; 150 e 225kg of N ha-1, in the urea form (45% de N) in single application, 35 days after seeding. The evaluation period was of 84 days. The forage was influenced quadratic ally by N rates, with minimum point at 182.75kg of N ha-1. However, the supply of leaf blades (LFM) was not influenced by doses of N (3.8kg LFM 100kg-1 live weight) or by the average daily weight gain, averaging 0.133 kg of LW an day. For stocking rate and live weight gain per area the doses of N increased 3.0 kg of LW-1 ha-1 and 1.1kg of LW ha-1, respectively for each kg of N applied. Nitrogen fertilization provides increases in animal productivity which results in increase kg of meat produced in this system.
- Subjects
NITROGEN fertilizers; RYEGRASSES; PASTURE plants; LAMB (Meat); CONSERVATION tillage; SOIL management; NITROGEN excretion
- Publication
Ciência Rural, 2010, Vol 40, Issue 6, p1399
- ISSN
0103-8478
- Publication type
Article
- DOI
10.1590/S0103-84782010005000095