Table 4 Effects of DPL and DPR supplementation on immune organ index in chickens (mean ± SD, n = 20)

3.17 ± 0.49^a

2.62 ± 0.47^b

2.74 ± 0.52^b

2.81 ± 0.41^b

2.91 ± 0.37^a

2.67 ± 0.36^bc

2.86 ± 0.42^b

2.84 ± 0.49^b

2.25 ± 0.55^a

1.45 ± 0.51^c

1.74 ± 0.46^b

1.89 ± 0.61^b

1.99 ± 0.47^a

1.52 ± 0.39^bc

1.65 ± 0.46^b

1.77 ± 0.51^b

3.53 ± 0.36^a

2.52 ± 0.39^d

2.61 ± 0.37^c

2.84 ± 0. 41^bc

3.09 ± 0.52^b

2.37 ± 0.31^d

2.58 ± 0.38 ^cd

2.74 ± 0.41^c