Oxidative stress and growth rate We found a marginally non-significant positive association between MDA and lamb growth rate across lambs sampled during 2010–2013, but no indication of interactions between growth and year, sex or twin status ( table 1 and electronic supplementary material, table S2; figure 1 ).
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Marker-dependent associations among oxidative stress, growth and survival during early life in a wild mammal.
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We found some evidence of the predicted positive association between MDA and growth rate, but the estimated effect was only marginally statistically significant.
When we refitted our model including the additional MDA data from 2007, we estimated similar effect sizes but the overall effect of growth rate on MDA was marginally significant (estimated slopes of 2.62 ± 1.49 s.e. excluding 2007 and 2.58 ± 1.17 s.e. including 2007; electronic supplementary material, table S3).