Table 5.
The effect of dietary minerals (Zn-Cr and organic-Se) supplementation on carcass traits of broilers under heat stress conditions. (n = 8).
| Treatments | Body Weight, g | (g/100 g of Live Body Weight) | |||||
|---|---|---|---|---|---|---|---|
| Carcass Yield | Gizzard | Liver | Heart | Abdominal Fat | Spleen | ||
| (A) Effect of Zn-Cr mixture | |||||||
| Without Zn-Cr | 1815.42 b | 70.08 b | 1.82 b | 2.04 b | 0.53 b | 1.93 a | 0.11 |
| With Zn-Cr | 1996.58 a | 72.30 a | 2.00 a | 2.33 a | 0.59 a | 1.61 b | 0.12 |
| SEM | 14.11 | 0.11 | 0.04 | 0.03 | 0.02 | 0.03 | 0.01 |
| p-value | <0.0001 | <0.0001 | 0.0078 | <0.0001 | 0.0102 | <0.0001 | 0.4426 |
| (B) Effect of organic Se levels | |||||||
| Without Se | 1820.66 b | 70.94 b | 1.92 | 2.11 | 0.55 | 1.82 | 0.11 |
| With LSe ≠ | 1941.11 a | 71.42 a | 1.95 | 2.25 | 0.57 | 1.73 | 0.11 |
| With HSe ≠≠ | 1956.21 a | 71.22 ab | 1.86 | 2.21 | 0.56 | 1.77 | 0.11 |
| SEM | 17.28 | 0.14 | 0.05 | 0.04 | 0.02 | 0.04 | 0.01 |
| p-value | <0.0001 | 0.0745 | 0.4707 | 0.0646 | 0.7044 | 0.2610 | 0.9799 |
| (A × B) Effect of interaction between Zn-Cr mixture and organic Se levels | |||||||
| T1 | 1704.28 d | 69.84 b | 1.80 | 1.89 c | 0.51 | 2.01 a | 0.10 |
| T2 | 1937.05 b | 72.03 a | 2.04 | 2.32 a | 0.58 | 1.63 b | 0.12 |
| T3 | 1840.45 c | 70.22 b | 1.86 | 2.11 b | 0.54 | 1.89 a | 0.11 |
| T4 | 1901.53 cb | 70.18 b | 1.79 | 2.12 b | 0.53 | 1.91 a | 0.11 |
| T5 | 2041.78 a | 72.62 a | 2.04 | 2.39 a | 0.60 | 1.57 b | 0.12 |
| T6 | 2010.90 a | 72.27 a | 1.93 | 2.29 a | 0.59 | 1.63 b | 0.11 |
| SEM | 24.43 | 0.20 | 0.08 | 0.06 | 0.03 | 0.05 | 0.01 |
| p-value | <0.0001 | <0.0001 | 0.0992 | <0.0001 | 0.1643 | <0.0001 | 0.9632 |
a,b,c,d = means with different letters in the same column are significantly different at (p < 0.05). SEM, standard error of the mean. ≠ LSe = low selenium concentration, ≠≠ HSe = high selenium concentration. T1 = (basal diet, no additive), T2 = T1 + 100 mg Zn + 1.5 mg Cr/Kg diet (Zn-Cr), T3 = T1 + 0.6 mg Se/Kg, T4 = T1 + 0.9 mg Se/Kg, T5 = T1 + (100 mg Zn + 1.5 mg Cr + 0.6 mg Se) and T6 = T1 + (100 mg Zn + 1.5 mgCr + 0.9 mg Se).