Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/46580
Title: Grazing Intensity Impacts on Herbage Mass, Sward Structure, Greenhouse Gas Emissions, and Animal Performance: Analysis of Brachiaria Pastureland
Keywords: Beef cattle
Tropical pasture
Marandu grass
Continuous stocking
Pastagem tropical
Capim-marandu
Gado de corte
Issue Date: Nov-2020
Publisher: Multidisciplinary Digital Publishing Institute - MDPI
Citation: RUGGIERI, A. C. et al. Grazing Intensity Impacts on Herbage Mass, Sward Structure, Greenhouse Gas Emissions, and Animal Performance: Analysis of Brachiaria Pastureland. Agronomy, [S. I.], v. 10, n. 11, 2020. DOI: 10.3390/agronomy10111750.
Abstract: A 7 year experiment (2008–2014) evaluated cattle grazing intensity (sward height) effects on herbage mass, forage quality, and greenhouse gas emissions in continuously stocked pastures containing the tropical ‘Marandu’ palisade grass (Brachiaria brizantha (Hochst. ex A. Rich) Stapf cv. Marandu). The experiment consisted of three sward height treatments (15, 25, and 35 cm) and six replicates. There were four periods each year during the rearing phase. Significant effects were found for herbage mass, proportions of leaf and stem, crude protein, neutral detergent fiber, acid detergent fiber, lignin, animal performance, enteric methane (CH4), and greenhouse gas (GHG) emissions from soils. When the canopy height increased from 15 to 35 cm, the herbage mass rose from 5.23 to 9.86 kg t ha−1, leaf percentage decreased, and stem percentage increased. Crude protein content averaged 14.2%, and neutral detergent fiber averaged 58%. Average daily gain averaged 0.67, 0.81, and 0.90 kg −1 head−1, while live weight gain ha–1 was 649, 530, and 439 kg for the 15, 25, and 35 cm treatments, respectively. The weather variables explained the GHG emissions, interannual herbage mass, and structure variations.
URI: http://repositorio.ufla.br/jspui/handle/1/46580
Appears in Collections:DZO - Artigos publicados em periódicos



This item is licensed under a Creative Commons License Creative Commons