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Pakistan Journal of Nutrition
  Year: 2017 | Volume: 16 | Issue: 10 | Page No.: 789-796
DOI: 10.3923/pjn.2017.789.796
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Methane Production Potential and Nutritive Value of Indigenous Browses from mid Rift Valley of Ethiopia

Amsalu Sisay , Tegene Negesse and Ajebu Nurfeta

Objective: This study was conducted to evaluate the chemical composition, in vitro gas and methane (CH4) production of eight tannin-containing browses species from Rift Valley of Ethiopia. Materials and Methods: Leaves of Acacia seyal, Acacia senegal, Acacia tortilis, Prosopis juliflora, Millettia ferruginea, Vernonia amygadalina, Croton macrostachyus and Cordia africana were collected, oven-dried and ground to 1.0 mm for in vitro gas and chemical analysis. General linier model procedure of SAS, Version 9.2 was used for statistical analysis. Results: The highest crude protein (CP) contents of the browses ranged from 13-29% was observed for Acacia senegal and lowest for Acacia seyal. The nutrient detergent fiber (NDF), acid detergent fiber (ADF) and acid detergent lignin (ADL) were highest for Cordia africana and lowest for Acacia seyal. The CT content for Acacia seyal, Acacia tortilis and Millettia ferruginea were higher (p<0.05) than the remaining species. Acacia seyal produced the highest gas volume and Prosopis juliflora produced the lowest. The lowest (p<0.05) CH4 percentage of total gas was recorded from Acacia seyal. The CH4 percentage from Cordia africana was higher (p<0.05) than Acacia seyal and Acacia tortilis. Inclusion of polyethylene glycol (PEG) significantly improved gas production and organic matter digestibility (OMD) of browses. Conclusion: The high gas production and OMD of Acacia seyal, coupled with its lowest percent of CH4 of total gas produced during fermentation would make the browse potential supplement of low quality roughages while reducing enteric CH4 emissions.
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How to cite this article:

Amsalu Sisay, Tegene Negesse and Ajebu Nurfeta, 2017. Methane Production Potential and Nutritive Value of Indigenous Browses from mid Rift Valley of Ethiopia. Pakistan Journal of Nutrition, 16: 789-796.

DOI: 10.3923/pjn.2017.789.796






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