Data/hora: 21/06/2024 00:58:24

Biblioteca(s): 	Embrapa Agrobiologia.	
Data corrente: 	19/11/2021	
Data da última atualização: 	19/11/2021	
Autoria: 	HOMEM, B. G. C.; LIMA, I. B. G. de; SPASIANI, P. P.; BORGES, L. P. C.; BODDEY, R. M.; DUBEUX JUNIOR, J. C. B.; BERNARDES, T. F.; CASAGRANDE, D. R.	
Afiliação: 	BRUNO G. C. HOMEM, UFLA; TALO B. G. DE LIMA, UFLA; PAOLA P. SPASIANI, UFLA; UFLA; ROBERT MICHAEL BODDEY, CNPAB; JOSÉ C. B. DUBEUX JUNIOR, UNIVERSITY OF FLORIDA, USA; THIAGO F. BERNARDES, UFLA; DANIEL R. CASAGRANDE, UFLA.	
Título: 	Palisadegrass pastures with or without nitrogen or mixed with forage peanut grazed to a similar target canopy height. 2. Effects on animal performance, forage intake and digestion, and nitrogen metabolism.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Grass and Forage Science, v. 76, n. 3, p. 413-426, 2021.	
ISSN: 	0142-5242	
DOI: 	10.1111/gfs.12533	
Idioma: 	Inglês	
Conteúdo: 	The lack of nitrogen (N) input on pastures is the main limiting factor to increase animal performance in tropical regions. This 2.5-year study assessed animal performance, forage intake and digestion, and N metabolism responses of three pasture treatments: (1) mixed Marandu palisadegrass-Brachiaria brizantha (Hochst. ex A. Rich.) R.D. Webster (syn. Urochloa brizantha Stapf cv. Marandu)-and forage peanut (Arachis pintoi Krapov. & W.C. Greg. cv. BRS Mandobi) pastures (GRASS + LEGUME), (2) monoculture Marandu palisadegrass pastures with 150 kg of N/ha (GRASS + N), and (3) monoculture Marandu palisadegrass without N fertilizer (GRASS). Continuous stocking with variable stocking rate was used with a target canopy height of 20 to 25 cm. The average daily gain was greatest at GRASS + N and GRASS + LEGUME (p = .081). GRASS + N pasture had greatest stocking rate and liveweight gain per area (p p < .001, respectively), followed by GRASS + LEGUME pasture. No differences between treatments were found for the dry matter forage intake (p = .729); however, GRASS + N and GRASS + LEGUME pastures had greater crude protein and digestible organic matter intakes than GRASS pasture (p = .007 and p = .083, respectively). Greatest microbial protein synthesis and efficiency of microbial synthesis were found for GRASS + N and GRASS + LEGUME pastures (p = .016 and p = .067, respectively). Apparent efficiency of N utilization and microbial protein/CP intake ratio was greatest at GRASS + LEGUME pastures (p = .009 and p = .042, respectively). Nitrogen application or the integration of forage peanut in grass pasture increases animal performance, forage digestibility, and microbial protein synthesis.	
Palavras-Chave: 	Biological nitrogen fixation; Grazing management strategies; Herbage mass.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
Registro original: 	Embrapa Agrobiologia (CNPAB)	
Exemplares: 	CNPAB - (41861-1) - UPC - AP - DD -  -  -  - DIS