$Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass$
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Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass

Abstract The effects of nitrogen (N) fertilization levels on protein and carbohydrate fractions in Marandu palisadegrass pasture [Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] were investigated in a pasture over five years. The experimental design was completely randomized with four levels...

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Autores principales:	Rhaony Gonçalves Leite, Abmael da Silva Cardoso, Natália Vilas Boas Fonseca, Maria Luisa Curvelo Silva, Luís Orlindo Tedeschi, Lutti Maneck Delevatti, Ana Cláudia Ruggieri, Ricardo Andrade Reis
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e5b168e9760d43b783ba1e87162a18f3
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spelling	oai:doaj.org-article:e5b168e9760d43b783ba1e87162a18f32021-12-02T16:17:34ZEffects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass10.1038/s41598-021-94098-42045-2322https://doaj.org/article/e5b168e9760d43b783ba1e87162a18f32021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94098-4https://doaj.org/toc/2045-2322Abstract The effects of nitrogen (N) fertilization levels on protein and carbohydrate fractions in Marandu palisadegrass pasture [Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] were investigated in a pasture over five years. The experimental design was completely randomized with four levels of N (0, 90, 180, and 270 kg N ha-1, as urea) for five years, and with three replicates. The study was conducted in a continuously stocked pasture during the forage growing season (December to April) in a tropical region. The effects of N fertilization were similar across the five years. With increasing N fertilization, the concentrations of crude protein (CP) increased from 103 to 173 g kg−1 (P < 0.001), soluble fractions (Fraction A + B1) increased from 363 to 434 g kg−1 of total CP (P = 0.006); neutral detergent fiber (NDF) decreased from 609 to 556 g kg−1 (P = 0.037); indigestible NDF (P = 0.046), potentially degradable neutral detergent fiber (P = 0.037), and acid detergent fiber decreased (P = 0.05), and total digestible nutrient (TDN) increased (P < 0.001). Increasing N fertilization decreased the concentrations of Fraction C (P = 0.014) and total carbohydrates (P < 0.0001), and increased CP:organic matter digestibility (P < 0.01). Concentrations of neutral detergent fiber free of ash and protein (P = 0.003), indigestible neutral detergent fiber (P < 0.001), neutral detergent fiber potentially degradable (P = 0.11), CP (P < 0.001), Fraction A + B1 (P < 0.001), Fraction B2 (P < 0.001), Fraction B3 (P < 0.01), and non-structural carbohydrates differed (P < 0.001) across years. Therefore, N fertilization can be used to increase CP, soluble protein, and TDN.Rhaony Gonçalves LeiteAbmael da Silva CardosoNatália Vilas Boas FonsecaMaria Luisa Curvelo SilvaLuís Orlindo TedeschiLutti Maneck DelevattiAna Cláudia RuggieriRicardo Andrade ReisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rhaony Gonçalves Leite Abmael da Silva Cardoso Natália Vilas Boas Fonseca Maria Luisa Curvelo Silva Luís Orlindo Tedeschi Lutti Maneck Delevatti Ana Cláudia Ruggieri Ricardo Andrade Reis Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass
description	Abstract The effects of nitrogen (N) fertilization levels on protein and carbohydrate fractions in Marandu palisadegrass pasture [Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] were investigated in a pasture over five years. The experimental design was completely randomized with four levels of N (0, 90, 180, and 270 kg N ha-1, as urea) for five years, and with three replicates. The study was conducted in a continuously stocked pasture during the forage growing season (December to April) in a tropical region. The effects of N fertilization were similar across the five years. With increasing N fertilization, the concentrations of crude protein (CP) increased from 103 to 173 g kg−1 (P < 0.001), soluble fractions (Fraction A + B1) increased from 363 to 434 g kg−1 of total CP (P = 0.006); neutral detergent fiber (NDF) decreased from 609 to 556 g kg−1 (P = 0.037); indigestible NDF (P = 0.046), potentially degradable neutral detergent fiber (P = 0.037), and acid detergent fiber decreased (P = 0.05), and total digestible nutrient (TDN) increased (P < 0.001). Increasing N fertilization decreased the concentrations of Fraction C (P = 0.014) and total carbohydrates (P < 0.0001), and increased CP:organic matter digestibility (P < 0.01). Concentrations of neutral detergent fiber free of ash and protein (P = 0.003), indigestible neutral detergent fiber (P < 0.001), neutral detergent fiber potentially degradable (P = 0.11), CP (P < 0.001), Fraction A + B1 (P < 0.001), Fraction B2 (P < 0.001), Fraction B3 (P < 0.01), and non-structural carbohydrates differed (P < 0.001) across years. Therefore, N fertilization can be used to increase CP, soluble protein, and TDN.
format	article
author	Rhaony Gonçalves Leite Abmael da Silva Cardoso Natália Vilas Boas Fonseca Maria Luisa Curvelo Silva Luís Orlindo Tedeschi Lutti Maneck Delevatti Ana Cláudia Ruggieri Ricardo Andrade Reis
author_facet	Rhaony Gonçalves Leite Abmael da Silva Cardoso Natália Vilas Boas Fonseca Maria Luisa Curvelo Silva Luís Orlindo Tedeschi Lutti Maneck Delevatti Ana Cláudia Ruggieri Ricardo Andrade Reis
author_sort	Rhaony Gonçalves Leite
title	Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass
title_short	Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass
title_full	Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass
title_fullStr	Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass
title_full_unstemmed	Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass
title_sort	effects of nitrogen fertilization on protein and carbohydrate fractions of marandu palisadegrass
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e5b168e9760d43b783ba1e87162a18f3
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Effects of nitrogen fertilization on protein and carbohydrate fractions of Marandu palisadegrass

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