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Titre du document / Document title

Methane production and energy partition of cattle in the tropics

Auteur(s) / Author(s)

KURIHARA M. (1) ; MAGNER T. (1) ; HUNTER R. A. (1) ; MCCRABB G. J. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) CSIRO Tropical Agriculture, Tropical Beef Centre, Rockhampton, Queensland 4702, AUSTRALIE

Résumé / Abstract

The aim of this experiment was to determine CH 4 production and energy partition for a range of diets fed to Bos indicus cattle. Six Brahman cattle were fed on three different diets in a replicated Latin square experiment over three periods. The diets were (1) long-chopped Angleton grass (Dicanthium aristatum) hay ad libitum (DM digestibility (DMD) 41 (SE 2) %; 4 g N/kg), (2) long-chopped Rhodes grass (Chloris gayana) hay ad libitum (DMD 60 (SE 1) %; 14 g N/kg) or (3) 2 kg long-chopped luceme (Medicago sativa) hay/d plus a high-grain diet (ad libitum) (DMD 70 (SE 1) %; 31 g N/kg). CH4 production was measured using confinement-type respiration chambers. Metabolizable energy intake (MJ/d) of cattle fed on Angleton grass (18.4 (SE 2.0)) was lower (P < 0.01) than that for Rhodes grass (54.9 (SE 2.1)), which was lower (P< 0.01) than that for the high-grain diet (76.7 (SE 5.8)). CH4 production (g/d) for cattle fed on Rhodes grass (257 (SE 14)) was higher (P<0.01) than that for cattle fed on both the high-grain diet (160 (SE 24)) and Angleton grass (113 (SE 16)). CH4 conversion rate (MJ CH4 produced per 100 MJ gross energy intake) was not significantly different between cattle fed on Angleton (10.4 (SE 1.1)) and Rhodes (11.4 (SE 0.3)) grass, but was higher (P< 0.01) than for cattle fed on the high-grain diet (6.7 (SE 0.7)). CH4 production (g/kg live-weight gain) was associated (P< 0.001) with both live-weight gain and feed: gain ratio. We conclude that the relationships between CH4 production, energy utilization and live-weight change of cattle fed on tropical forages differ from those of cattle fed on diets based on temperate forages.

Revue / Journal Title

British journal of nutrition    ISSN  0007-1145   CODEN BJNUAV 

Source / Source

1999, vol. 81, no3, pp. 227-234 (30 ref.)

Langue / Language

Anglais

Editeur / Publisher

Cambridge University Press, Cambridge, ROYAUME-UNI  (1947) (Revue)

Mots-clés anglais / English Keywords

Production rate

;

Methane

;

Resource allocation

;

Diet

;

Fodder crop

;

Tropic

;

Domestic animal

;

Animal production

;

Bovine

;

Ruminant animal

;

Chloris gayana

;

Medicago sativa

;

Feeding

;

Artiodactyla

;

Ungulata

;

Mammalia

;

Vertebrata

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Leguminosae

;

Dicotyledones

;

Mots-clés français / French Keywords

Taux production

;

Méthane

;

Allocation ressource

;

Régime alimentaire

;

Plante fourragère

;

Tropique

;

Animal domestique

;

Production animale

;

Bovin

;

Animal ruminant

;

Chloris gayana

;

Medicago sativa

;

Dicanthium aristatum

;

Alimentation

;

Artiodactyla

;

Ungulata

;

Mammalia

;

Vertebrata

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Leguminosae

;

Dicotyledones

;

Mots-clés espagnols / Spanish Keywords

Índice producción

;

Metano

;

Asignación recurso

;

Régimen alimentario

;

Planta forrajera

;

Trópico

;

Animal doméstico

;

Producción animal

;

Bovino

;

Animal rumiante

;

Chloris gayana

;

Medicago sativa

;

Alimentación

;

Artiodactyla

;

Ungulata

;

Mammalia

;

Vertebrata

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Leguminosae

;

Dicotyledones

;

Localisation / Location

INIST-CNRS, Cote INIST : 2404, 35400008427545.0080

Nº notice refdoc (ud4) : 1796088



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