Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows

G.L. Arzate-Vázquez, F.A. Castrejón-Pineda, R. Rosiles-Martínez, S. Carrillo-Pita, S. Angeles-Campos, and E. Vargas-Bello-Pérez. 2016. Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows. Cien. Inv. Agr. 43(3): 476-485. In tropical pro...

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Autores principales:	Arzate-Vázquez,Gerardo L, Castrejón-Pineda,Francisco A, Rosiles-Martínez,René, Carrillo-Pita,Silvino, Angeles-Campos,Sergio, Vargas-Bello-Pérez,Einar
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2016
Materias:	Cows forage nutritive value ruminants trace minerals
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300013
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spelling	oai:scielo:S0718-162020160003000132017-02-03Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cowsArzate-Vázquez,Gerardo LCastrejón-Pineda,Francisco ARosiles-Martínez,RenéCarrillo-Pita,SilvinoAngeles-Campos,SergioVargas-Bello-Pérez,Einar Cows forage nutritive value ruminants trace minerals G.L. Arzate-Vázquez, F.A. Castrejón-Pineda, R. Rosiles-Martínez, S. Carrillo-Pita, S. Angeles-Campos, and E. Vargas-Bello-Pérez. 2016. Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows. Cien. Inv. Agr. 43(3): 476-485. In tropical production systems, dairy cows are rarely supplemented with minerals, which often lead to mineral imbalances. Grasses grown together in the same soil type and sampled at the same growth stage can vary widely in chemical and mineral composition; therefore, the objective of this study was to characterize the chemical and mineral composition of Urochloa spp., Megathyrsus spp., and Andropogon spp. at three different stages of growth in the same soil type. The content of dry matter (DM; g 100 g-1) was higher (P<0.05) in Urochloa spp. than in Andropogon spp. and Megathyrsus spp. Hemicellulose, non-fiber carbohydrates and slowly degraded true protein contents were higher (P≤0.05) in Andropogon spp. than in Urochloa spp. and Megathyrsus spp. Ether extract, crude protein, rapidly degraded true protein and unavailable protein contents were not affected by genus, whereas ether extract, ash, neutral detergent fiber, non-fiber carbohydrates, rapidly degraded true protein and unavailable protein contents were not affected by growth stage. Compared with Urochloa spp. and Andropogon spp., Megathyrsus spp. had higher (P≤0.05) contents of Na and Mg, intermediate (P≤0.05) contents of Mn and lower (P≤0.05) contents of Zn. P, Na, and K contents were affected by growth stage. Compared with Megathyrsus spp. and Andropogon spp., Urochloa spp. was higher (P≤0.05) in P and Na contents. Results from this study may be useful in predicting the nutrient and mineral supply from forages in dairy production systems in tropical areas.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.43 n.3 20162016-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300013en10.4067/S0718-16202016000300013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Cows forage nutritive value ruminants trace minerals
spellingShingle	Cows forage nutritive value ruminants trace minerals Arzate-Vázquez,Gerardo L Castrejón-Pineda,Francisco A Rosiles-Martínez,René Carrillo-Pita,Silvino Angeles-Campos,Sergio Vargas-Bello-Pérez,Einar Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
description	G.L. Arzate-Vázquez, F.A. Castrejón-Pineda, R. Rosiles-Martínez, S. Carrillo-Pita, S. Angeles-Campos, and E. Vargas-Bello-Pérez. 2016. Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows. Cien. Inv. Agr. 43(3): 476-485. In tropical production systems, dairy cows are rarely supplemented with minerals, which often lead to mineral imbalances. Grasses grown together in the same soil type and sampled at the same growth stage can vary widely in chemical and mineral composition; therefore, the objective of this study was to characterize the chemical and mineral composition of Urochloa spp., Megathyrsus spp., and Andropogon spp. at three different stages of growth in the same soil type. The content of dry matter (DM; g 100 g-1) was higher (P<0.05) in Urochloa spp. than in Andropogon spp. and Megathyrsus spp. Hemicellulose, non-fiber carbohydrates and slowly degraded true protein contents were higher (P≤0.05) in Andropogon spp. than in Urochloa spp. and Megathyrsus spp. Ether extract, crude protein, rapidly degraded true protein and unavailable protein contents were not affected by genus, whereas ether extract, ash, neutral detergent fiber, non-fiber carbohydrates, rapidly degraded true protein and unavailable protein contents were not affected by growth stage. Compared with Urochloa spp. and Andropogon spp., Megathyrsus spp. had higher (P≤0.05) contents of Na and Mg, intermediate (P≤0.05) contents of Mn and lower (P≤0.05) contents of Zn. P, Na, and K contents were affected by growth stage. Compared with Megathyrsus spp. and Andropogon spp., Urochloa spp. was higher (P≤0.05) in P and Na contents. Results from this study may be useful in predicting the nutrient and mineral supply from forages in dairy production systems in tropical areas.
author	Arzate-Vázquez,Gerardo L Castrejón-Pineda,Francisco A Rosiles-Martínez,René Carrillo-Pita,Silvino Angeles-Campos,Sergio Vargas-Bello-Pérez,Einar
author_facet	Arzate-Vázquez,Gerardo L Castrejón-Pineda,Francisco A Rosiles-Martínez,René Carrillo-Pita,Silvino Angeles-Campos,Sergio Vargas-Bello-Pérez,Einar
author_sort	Arzate-Vázquez,Gerardo L
title	Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
title_short	Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
title_full	Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
title_fullStr	Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
title_full_unstemmed	Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
title_sort	effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300013
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_version_	1714202175160188928

Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows

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