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Herbage intake, methane emissions and animal performance of steers grazing dwarf elephant grass v. dwarf elephant grass and peanut pastures

Published online by Cambridge University Press:  22 April 2016

E. A. Andrade ,
E. X. Almeida ,
G. T. Raupp ,
M. F. Miguel ,
D. M. de Liz ,
P. C. F. Carvalho ,
C. Bayer  and
H. M. N. Ribeiro-Filho
E. A. Andrade
Affiliation:
Departamento de Produção Animal e Alimentos, Universidade do Estado de Santa Catarina, Av. Luiz de Camões, 2090, Lages, SC 88520-000, Brazil
E. X. Almeida
Affiliation:
Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, Lageado Água Negras, Ituporanga, SC 88400-000, Brazil
G. T. Raupp
Affiliation:
Departamento de Produção Animal e Alimentos, Universidade do Estado de Santa Catarina, Av. Luiz de Camões, 2090, Lages, SC 88520-000, Brazil
M. F. Miguel
Affiliation:
Departamento de Produção Animal e Alimentos, Universidade do Estado de Santa Catarina, Av. Luiz de Camões, 2090, Lages, SC 88520-000, Brazil
D. M. de Liz
Affiliation:
Departamento de Produção Animal e Alimentos, Universidade do Estado de Santa Catarina, Av. Luiz de Camões, 2090, Lages, SC 88520-000, Brazil
P. C. F. Carvalho
Affiliation:
Departamento de Plantas Forrageiras e Agrometeorologia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 7712, Porto Alegre, RS 91540-000, Brazil
C. Bayer
Affiliation:
Departamento de Solos, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 7712, Porto Alegre, RS 91540-000, Brazil
H. M. N. Ribeiro-Filho*
Affiliation:
Departamento de Produção Animal e Alimentos, Universidade do Estado de Santa Catarina, Av. Luiz de Camões, 2090, Lages, SC 88520-000, Brazil
*
†E-mail: henrique.ribeiro@udesc.br
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Abstract

Management strategies for increasing ruminant legume consumption and mitigating methane emissions from tropical livestock production systems require further study. The aim of this work was to evaluate the herbage intake, animal performance and enteric methane emissions of cattle grazing dwarf elephant grass (DEG) (Pennisetum purpureum cv. BRS Kurumi) alone or DEG with peanut (Arachis pintoi cv. Amarillo). The experimental treatments were the following: DEG pastures receiving nitrogen fertilization (150 kg N/ha as ammonium nitrate) and DEG intercropped with peanut plus an adjacent area of peanut that was accessible to grazing animals for 5 h/day (from 0700 to 1200 h). The animals grazing legume pastures showed greater average daily gain and herbage intake, and shorter morning and total grazing times. Daily methane emissions were greater from the animals grazing legume pastures, whereas methane emissions per unit of herbage intake did not differ between treatments. Allowing animals access to an exclusive area of legumes in a tropical grass-pasture-based system can improve animal performance without increasing methane production per kg of dry matter intake.

Keywords

Arachis pintoiaverage daily gaingreenhouse gasesherbage intakePennisetum Purpureum
Type
Short Communication
Information
animal , Volume 10 , Issue 10 , October 2016 , pp. 1684 - 1688
Copyright
© The Animal Consortium 2016 

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