Social Enrichment Improves Affective State and Foraging Behavior Compared to Physical Enrichment, While Maintaining Growth Performance in Broiler Chickens.

The pen had a marginally significant effect (coefficient: 952.77, p = 0.059), suggesting that the pens may slightly influence feeding behavior.

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Tonic Immobility Test A tendency for higher tonic immobility times was observed in the Control group (physical enrichment) compared to the Social group (social enrichment) on day 20 (t = 1.4281, df = 90.675, p = 0.078), indicating a trend toward significance.

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While the trend observed aligns with our hypothesis that physical enrichment alone may not be sufficient to reduce fear, it is important to note that the difference did not reach statistical significance.

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