1) Layers
Studies show that different zinc sources and supplementation levels have no significant effect on laying performance or egg quality in hens. However, adding 40 or 80 mg/kg Hydroxy Methionine Zinc to the diet significantly improves eggshell quality, reduces the broken egg rate, and enhances tibia strength in laying hens aged 66–72 weeks.
Note: Values without common superscripts differ significantly (P < 0.05).
2) Weaned piglets
Studies indicate that supplementing piglet diets with hydroxy methionine zinc (MHA-Zn) instead of zinc sulfate promotes zinc transport and deposition, increases antioxidant enzyme activity and gene expression, and maintains intestinal barrier integrity by reducing inflammatory cytokine expression—thereby supporting normal intestinal function under oxidative stress.
3) Ruminants
In Simmental bulls, dietary supplementation with 80 mg/kg hydroxy methionine zinc significantly improved semen quality, reflected by increased semen volume, sperm density, and motility, along with the lowest deformity rate.
Table 1 Comparison of semen quality of bulls supplemented with zinc hydroxy methionine at different levels
|
Semen index |
Control group | Group L | Group M | Group H |
| precision (mL) | 6.33±0.35a | 6.65±0.47ab | 6.97±0.54b | 6.88±0.4 |
| Sperm density (x10⁸/mL) | 12.36±1.71a | 12.47±1.26a | 13.16±2.91b | 13.06±2.72b |
| Fresh essence vitality (%) | 66.20±2.29a | 67.60±2.36a | 71.67±3.79b | 69.25±3.74b |
| Post-freezing activity (%) | 41.50±11.82a | 44.70±8.44a | 47.33±6.43b | 46.20±9.12b |
| Post-freezing deformity rate (%) | 6.50±2.34 | 4.80±1.37 | 4.30±0.47 | 5.10±1.3 |
4) Aquatic animals
In carp, additional supplementation with 50.5 mg/kg zinc (as MHA-Zn) resulted in a maximum weight gain rate (WGR) of 363.5%. Moreover, as zinc supplementation increased, zinc deposition in vertebrae, intestines, liver, and whole fish also increased significantly (P < 0.01).
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Post time: Mar-23-2026
