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. 2021 Apr 24;100(8):101217. doi: 10.1016/j.psj.2021.101217

Table 3.

Effect of phloretin on growth performance in broilers (22–42 d) exposed to hot environment.

Heat-stressed groups2
 P-Value
Item Control group1 A B C Linear3 Quadratic3
IBW (kg) 0.617 ± 0.004 0.613 ± 0.003 0.614 ± 0.002 0.611 ± 0.004 0.740 0.581
FBW (kg) 2.110 ± 0.052* 1.782 ± 0.017a 1.894 ± 0.034b 1.971 ± 0.031b < 0.001 0.624
BWG (kg) 1.492 ± 0.054* 1.170 ± 0.018a 1.280 ± 0.035b 1.360 ± 0.031b < 0.001 0.669
FI (kg) 3.061 ± 0.091* 2.605 ± 0.025a 2.711 ± 0.071ab 2.833 ± 0.071b 0.016 0.915
FGR 2.054 ± 0.025* 2.228 ± 0.020a 2.118 ± 0.018b 2.082 ± 0.014b < 0.001 0.102

*There were significant difference (P < 0.05) between the control and A groups (n = 60). The t test was performed to compare these 2 groups Value = Means ± SEM.

a,b,cWithout same letters in the same line differ significantly (P < 0.05) in A, B, and C groups (n = 60). A one-way analysis of variation and Tukey's test were used to determine the differences among the 3 heat-stressed groups. Value = Means ± SEM.

1

Control group: Chicken in control group were kept in the normal temperature environment and fed a basal diet.

2

A, B, and C groups: Chicken in these groups were kept in the hot environment and fed a basal diet supplemented with 0, 100, and 200 mg/kg phloretin.

3

The linear and quadratic effects of phloretin were detected by orthogonal polynomials. Abbreviations: IBW, initial body weight; FBW, final body weight; BWG, body weight gain; FI, feed intake; FGR, feed-to-gain ratio.