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Fig. 2 | Journal of Animal Science and Biotechnology

Fig. 2

From: Methodological factors affecting gas and methane production during in vitro rumen fermentation evaluated by meta-analysis approach

Fig. 2

Relationship between gas production (GP) and methane (CH4) proportion (% CH4 on total GP) using the predicted values obtained from the mixed model analysis aimed to removing the study effect (i.e., the heterogeneity of variance among studies) and considering also the correction of raw data for the different accuraciesFootnote

Adjustment for different accuracies of measurements in different studies was carried out by weighting raw data by the inverse of the squared standard error divided by the mean of all the squared standard errors (St-Pierre, 2001) [20].

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Journal of Animal Science and Biotechnology

ISSN: 2049-1891