Do Hens Use Enrichments Provided in Free-Range Systems?

The total numbers of birds observed, regardless of location, were similar between the different treatments at age 34 weeks, but treatment differences increased with age; at age 70 weeks, the greatest number of birds were observed for PB and the least for R ( Figure 3 b) (marginally significant interaction age.time.treatment, Wald 12 /ndf = 1.94 by GLMM; p = 0.026).

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Due to the large number of tests being carried out, the results focus on highly significant effects and make clear when results were marginal.

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