NUTRITIVE VALUE AND IN VITRO METHANE PRODUCTION OF TWO PERENNIAL GRASSES UNDER DIFFERENT STOCKING RATES IN PERIURBAN AREAS OF WEST-AFRICA

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AuteurKOURA, B IVAN
AuteurVASTOLO, ALEXANDRO
AuteurDOSSA, HIPPOLYTE GBENAKPON LUC HIPPOLYTE
AuteurCUTRIGNELLI, MONICA ISABELLA
AuteurMUSCO, NADIA
AuteurHOUINATO, MARCEL ROMUALD BENJAMIN
AuteurCABARO, SERENA
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2021
ResumeBackground. In sub-Saharan Africa, pasture is the most used practice in ruminant production, and grazing areas characteristics varied in different environment. To improve ruminants’ performances, the quality of forages represents one of the most important factors to keep under control. Objective. To quantify the effects of grazing stocking rate on the nutrient composition, energy content and in vitro fermentation characteristics including volatile fatty acids (VFA) and methane production (CH4) of two local perennial grasses Dactyloctenium aegyptium L. and Leptochloa caerulescens L. Methodology. The forage samples were collected in three locations (Zinvié, Gakpé, Adounko) characterized by different stocking rate (low, medium and high). Their chemical composition, energy content and in vitro fermentation characteristics, including CH4 production, were determined. Results. D. aegyptium showed the highest crude protein, energy content, organic matter degradability and VFA production (p<0.01) when collected in Zinvié, whereas the highest (p<0.01) structural carbohydrates (NDF) content was detected in Gakpé area and the highest CH4 production was recorded from the sample collected in Adounko (p<0.01). Contrariwise, L. caerulescens showed the highest level of crude protein and degradability (p<0.01) when collected in Zinvié, whereas it proved the highest NDF content and the lowest lignin values (p<0.01) when collected in Adounko. The highest CH4 level was obtained from the sample collected in area of Gakpé (p<0.01). Higher (p<0.01) in vitro VFA production were recorded in samples collected in Adounko and Gakpé than in the Zinvié. Implications. The results obtained in this study highlight the significant influence of urbanization and herd concentration, as well as of other environmental conditions, on the nutritional value and potential environmental impact of the studied perennial grasses. Conclusion. Samples from high grazing stocking rate locations produced more in vitro methane. Further in vivo studies are needed to confirm these results
Autre identifiantBECDB-12151
URIhttps://dspace.uac.bj/handle/123456789/10516
Languefr
Fait partie deTropical and Subtropical Agroecosystems
Sujetfeed resources
Sujetgreenhouse gas
Sujetnutrient degradability
Sujetruminant production
Sujetvolatile fatty acids
TitreNUTRITIVE VALUE AND IN VITRO METHANE PRODUCTION OF TWO PERENNIAL GRASSES UNDER DIFFERENT STOCKING RATES IN PERIURBAN AREAS OF WEST-AFRICA
TypeArticle

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