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Published online by Cambridge University Press: 24 November 2017
In recent years considerable attention has been given to Improving the feeding value of low-quality roughages through physiological, biological and chemical processes (Jackson, 1978). Many reviews of chemical treatment methods on the effect of digestibility have previously been undertaken by Homb (1984), Sundstøl (1984) and Wanapat et al (1985), but few have studied the effect on methane production. The values available are very variable. Since the importance of chemically upgrading low-quality forages is also increasing in developing countries, it is essential to investigate further the effect chemical upgrading has on methane production, in order to estimate its impact on global warming.