Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture

A three-year-long field experiment was conducted in a continuous grazing system with a variable stocking rate to evaluate effects of increasing nitrogen levels in Marandu grass (Brachiaria brizantha Hochst ex A. Rich Stapf "marandu") on herbage mass, forage accumulation rate (FAR), forage...

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Bibliographic Details
Published in:Scientific reports 2019-05, Vol.9 (1), p.7596-7596, Article 7596
Main Authors: Delevatti, Lutti M, Cardoso, Abmael S, Barbero, Rondineli P, Leite, Rhaony G, Romanzini, Eliéder P, Ruggieri, Ana C, Reis, Ricardo A
Format: Article
Language:English
Subjects:
Animal Feed
Animal Husbandry - methods
Animals
Cattle
Diet
Dietary Fiber - metabolism
Nitrogen
Nitrogen - metabolism
Nutritive value
Nutritive Value - physiology
Pasture
Poaceae - metabolism
Seasons
Stocking
Urea
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Summary:A three-year-long field experiment was conducted in a continuous grazing system with a variable stocking rate to evaluate effects of increasing nitrogen levels in Marandu grass (Brachiaria brizantha Hochst ex A. Rich Stapf "marandu") on herbage mass, forage accumulation rate (FAR), forage quality, stocking rate (SR), average daily gain (ADG), gain per hectare (GPH), and gain per kg of applied N. The experimental design was completely randomized with four treatments (control without application of N, and 90, 180, and 270 kg N ha year ) and three replicates (paddocks per treatment); nitrogen was applied in the form of urea. Herbage mass, crude protein (CP), FAR, SR, GPH, and the nitrogen nutrition index increased with increasing nitrogen level (P 
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-44138-x