Structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periods
SUMMARY This study aimed to evaluate the agronomic, structural traits and chemical composition of andropogon grass subjected to different defoliation intensities and rest periods. Two defoliation intensities (15 and 30 cm) and four rest periods (25; 35, 45 and 55 days) were evaluated in a factorial completely randomized design, with four replications. The rest period promoted a linear decreasing effect (P <0.05) on the dry biomass of leaf blades in the two defoliation intensities. The dry biomass of stems showed an increasing linear effect (P <0.05) according to the rest periods in the two defoliation intensities. Production was recorded at 2427.71; 2907.39; 3325.72 and 3749.45 kg ha−1 for the periods of 25; 35; 45 and 55 days, respectively. The dry matter content showed an increasing linear effect (P <0.05) as a function of the rest periods evaluated in the two defoliation intensities. The rest period indicated a decreasing linear trend (P <0.05) for the crude protein content in the two defoliation intensities. A decrease of 0.9 and 0.7 g kg−1 was verified for each day of the rest period. For each additional day in the rest period, there was an increase of 1.2 and 1.5 g kg−1 DM in the neutral detergent fiber content at intensities of 15 and 30 cm. The andropogon grass pasture managed with a 25-day rest period and defoliation intensity of 30 cm showed high leaf/stem ratio and good nutritional value.
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UFBA - Universidade Federal da Bahia
2017
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oai:scielo:S1519-994020170004004922018-01-23Structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periodsCosta,Clésio dos SantosRodrigues,Rosane CláudiaSantos,Francisco Naysson de SousaAraújo,Ricardo AlvesSousa,Giovanne Oliveira CostaLima,Juliana Rodrigues LacerdaNunes,Diego RibeiroRodrigues,Marcônio Martins forage dry mass nutritive value stem elongation SUMMARY This study aimed to evaluate the agronomic, structural traits and chemical composition of andropogon grass subjected to different defoliation intensities and rest periods. Two defoliation intensities (15 and 30 cm) and four rest periods (25; 35, 45 and 55 days) were evaluated in a factorial completely randomized design, with four replications. The rest period promoted a linear decreasing effect (P <0.05) on the dry biomass of leaf blades in the two defoliation intensities. The dry biomass of stems showed an increasing linear effect (P <0.05) according to the rest periods in the two defoliation intensities. Production was recorded at 2427.71; 2907.39; 3325.72 and 3749.45 kg ha−1 for the periods of 25; 35; 45 and 55 days, respectively. The dry matter content showed an increasing linear effect (P <0.05) as a function of the rest periods evaluated in the two defoliation intensities. The rest period indicated a decreasing linear trend (P <0.05) for the crude protein content in the two defoliation intensities. A decrease of 0.9 and 0.7 g kg−1 was verified for each day of the rest period. For each additional day in the rest period, there was an increase of 1.2 and 1.5 g kg−1 DM in the neutral detergent fiber content at intensities of 15 and 30 cm. The andropogon grass pasture managed with a 25-day rest period and defoliation intensity of 30 cm showed high leaf/stem ratio and good nutritional value.info:eu-repo/semantics/openAccessUFBA - Universidade Federal da BahiaRevista Brasileira de Saúde e Produção Animal v.18 n.4 20172017-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-99402017000400492en10.1590/s1519-99402017000400001 |
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Costa,Clésio dos Santos Rodrigues,Rosane Cláudia Santos,Francisco Naysson de Sousa Araújo,Ricardo Alves Sousa,Giovanne Oliveira Costa Lima,Juliana Rodrigues Lacerda Nunes,Diego Ribeiro Rodrigues,Marcônio Martins |
| spellingShingle |
Costa,Clésio dos Santos Rodrigues,Rosane Cláudia Santos,Francisco Naysson de Sousa Araújo,Ricardo Alves Sousa,Giovanne Oliveira Costa Lima,Juliana Rodrigues Lacerda Nunes,Diego Ribeiro Rodrigues,Marcônio Martins Structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periods |
| author_facet |
Costa,Clésio dos Santos Rodrigues,Rosane Cláudia Santos,Francisco Naysson de Sousa Araújo,Ricardo Alves Sousa,Giovanne Oliveira Costa Lima,Juliana Rodrigues Lacerda Nunes,Diego Ribeiro Rodrigues,Marcônio Martins |
| author_sort |
Costa,Clésio dos Santos |
| title |
Structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periods |
| title_short |
Structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periods |
| title_full |
Structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periods |
| title_fullStr |
Structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periods |
| title_full_unstemmed |
Structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periods |
| title_sort |
structural characteristics and chemical composition of andropogon grass pasture managed under different defoliation intensities and rest periods |
| description |
SUMMARY This study aimed to evaluate the agronomic, structural traits and chemical composition of andropogon grass subjected to different defoliation intensities and rest periods. Two defoliation intensities (15 and 30 cm) and four rest periods (25; 35, 45 and 55 days) were evaluated in a factorial completely randomized design, with four replications. The rest period promoted a linear decreasing effect (P <0.05) on the dry biomass of leaf blades in the two defoliation intensities. The dry biomass of stems showed an increasing linear effect (P <0.05) according to the rest periods in the two defoliation intensities. Production was recorded at 2427.71; 2907.39; 3325.72 and 3749.45 kg ha−1 for the periods of 25; 35; 45 and 55 days, respectively. The dry matter content showed an increasing linear effect (P <0.05) as a function of the rest periods evaluated in the two defoliation intensities. The rest period indicated a decreasing linear trend (P <0.05) for the crude protein content in the two defoliation intensities. A decrease of 0.9 and 0.7 g kg−1 was verified for each day of the rest period. For each additional day in the rest period, there was an increase of 1.2 and 1.5 g kg−1 DM in the neutral detergent fiber content at intensities of 15 and 30 cm. The andropogon grass pasture managed with a 25-day rest period and defoliation intensity of 30 cm showed high leaf/stem ratio and good nutritional value. |
| publisher |
UFBA - Universidade Federal da Bahia |
| publishDate |
2017 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-99402017000400492 |
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