Data used in the LCA analysis by Cranfield University

The file describes the content, which includes tables of average growth and feed data for the breed B used in the models of the paper plus a table of average mortality data

Mortality data and associated variables

This is an Excel (.xlsx) file derived from an Access database of cumulative mortality data collected in the field from farm records in the UK, Sweden and the Netherlands. Associated data include housing system, flock size and genotype. See Notes sheet for description of abbreviations

Effects of increasing levels of cumulative mortality at 72 weeks on cumulative energy demand (CED) and greenhouse gas emissions (GHGE) for free range egg production.

<p>Levels of up to 30% are modelled. The vertical gridlines show values for the 1st quartile, median, 3rd quartile and upper adjacent value associated with the mean CM of 10%.</p

Box plots for mortality in each housing system between 60 and 80 weeks of age using the full data set from 10 studies (3,851 flocks).

<p>Box plots for mortality in each housing system between 60 and 80 weeks of age using the full data set from 10 studies (3,851 flocks).</p

Predicted CM for a free range flock reaching 72 weeks at different times of year (modelled from 2,848 flocks, on 1,649 farms, from six studies).

<p>Predicted CM for a free range flock reaching 72 weeks at different times of year (modelled from 2,848 flocks, on 1,649 farms, from six studies).</p

Shows the predicted change in mortality over the lifetime of a flock for each breed (or genotype group) represented in the dataset.

<p>Predictions were generated assuming a date of 1st July 2012 for a free range housing system.</p