Produção de bovinos de corte em pastagem de aveia preta e azevém submetida à adubação nitrogenada

Gelci Carlos Lupatini; João Restle; Ricardo Zambarda Vaz; Alexandre Vargas Valente; Cledson Roso; Fabiano Nunes Vaz

doi:10.5216/cab.v14i2.21068

BEEF CATTLE PRODUCTION ON BLACK OATS AND ITALIAN RYEGRASS PASTURE UNDER NITROGEN FERTILIZATION

Authors

Gelci Carlos Lupatini Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brasil
João Restle Universidade Federal do Tocantins (UFT), Araguaína, Tocantins, Brasil
Ricardo Zambarda Vaz Universidade Federal de Pelotas (UFPEL), Pelotas, Rio Grande do Sul, Brasil
Alexandre Vargas Valente Universidade Federal de Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brasil
Cledson Roso Universidade Federal de Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brasil
Fabiano Nunes Vaz Universidade Federal de Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brasil

DOI:

https://doi.org/10.5216/cab.v14i2.21068

Keywords:

Cattle production

Abstract

We evaluated animal production on black oats (Avena strigosa Schreb.) and italian ryegrass (Lolium multiflorum) pasture submitted to nitrogen top fertilization of 0; 150 and 300 kg ha^-1, in the form of urea. We used 36 calves with average age and average weight of 10.5 months and 180 kg, respectively, as test-animals. The grazing system used was continuous with variable stocking rate. The block design was completely randomized with three replicates (paddock). Average weight gain was similar for the levels evaluated (0.925; 0.969 and 1.045 kg day^-1, respectively). Stocking rate and live weight gain per hectare showed a linear relation with nitrogen levels. The efficiency of animal production was 2.040 and 1.766 kg of weight gain per kg of nitrogen used for the dose of 150 and 300 of N, respectively. The stocking rate and live weight gain per hectare of beef calves increased with the nitrogen levels, from 0 to 300 kg of N ha^-1. However, the best efficiency in weight gain per unit of nitrogen applied was obtained with the dose of 150 kg of N ha^-1.

KEYWORDS: calves; nitrogen efficiency; pasture; weight gain.

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Published

2013-06-27

How to Cite

LUPATINI, G. C.; RESTLE, J.; VAZ, R. Z.; VALENTE, A. V.; ROSO, C.; VAZ, F. N. BEEF CATTLE PRODUCTION ON BLACK OATS AND ITALIAN RYEGRASS PASTURE UNDER NITROGEN FERTILIZATION. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 14, n. 2, p. 164–171, 2013. DOI: 10.5216/cab.v14i2.21068. Disponível em: https://revistas.ufg.br/vet/article/view/21068. Acesso em: 13 apr. 2025.

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Issue

Vol. 14 No. 2 (2013)

Section

Animal Production

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