Local X-Zelit trial results in Australian dairy cows.
An Australian commercial dairy trial compared X-Zelit with a DCAD transition feeding approach and measured blood minerals, milk production, rumination and fresh cow health events.
X-Zelit vs DCAD
The local trial provides Australian evidence for using X-Zelit in the close-up period before calving, with reported benefits across calcium status, milk yield and rumination.
These results come from an Australian commercial comparison of X-Zelit and a DCAD program. They show what was achieved under the conditions of that trial. Results can vary with ration formulation, cow management and farm conditions.
The broader evidence most consistently supports improved calcium status and reduced milk-fever risk.
Source: Dairy Australia, Transition Cow Management, 2nd edition, 2021.
Reported improvements in calcium status, milk yield and rumination.
The Australian trial reported stronger post-calving blood calcium and milk yield outcomes for cows fed X-Zelit, with positive trends across reproduction, immunity and rumination time.
Reported for the X-Zelit group, compared with 35.6 L in the BIO-CHLOR/DCAD group across all animals.
Reported average rumination time for the X-Zelit group, compared with 428 minutes in the BIO-CHLOR/DCAD group.
Reported milk solids for the X-Zelit group, compared with 2.49 kg in the BIO-CHLOR/DCAD group.
The trial’s mixed model analysis reported a treatment effect of 4.219 L for milk yield across all animals.
What was measured in the Australian trial.
The study looked beyond clinical milk fever alone. It measured blood macro-minerals, production, rumination, reproductive indicators and health events through the transition period and early lactation.
Blood calcium and minerals
The trial tracked serum calcium, phosphorus and magnesium through the pre-calving and post-calving period.
Milk yield and solids
Milk yield, milk fat, milk protein and total milk solids were compared between treatment groups.
Rumination time
Rumination was measured as an indicator of fresh cow recovery, comfort and return to normal intake after calving.
Health and reproduction
Health events and reproductive indicators were recorded, with trends that warrant further study.
What the results mean for transition cow management.
The value of a close-up cow strategy is seen after calving: stronger calcium status, better fresh cow starts and fewer disruptions when the cow enters lactation.
Stronger blood calcium around calving
The report states serum calcium was higher in the X-Zelit group during the pre-calving period and consistently higher at calving and through the first 14 days of lactation.
Higher average daily milk yield
The X-Zelit group had higher average daily milk yield, with milk production consistently greater during the experiment.
Higher rumination time
Average rumination time during lactation was significantly higher in animals fed X-Zelit.
Positive trends worth further study
This trial reported positive trends in reproduction, immunity and rumination time. Independent reviews of zeolite A studies have not shown a consistent effect on milk yield, fertility or immunity, so these are presented as encouraging local trends rather than proven general benefits (Dairy Australia, 2021).
Local evidence matters in Australian dairy systems.
The Australian results note that further studies in pasture-based systems would be beneficial, particularly where DCAD management can be challenging due to high potassium levels in forage.
Prepared before calving
X-Zelit is used before the calcium pressure point, helping the cow prepare for the demand that arrives at calving.
Alternative to DCAD complexity
For farms where DCAD is difficult to manage consistently, X-Zelit offers a different transition feeding approach.
Measured after calving
The trial focused on outcomes that matter after calving: blood minerals, production, rumination and health events.
Australian trial summary.
The full report provides the detailed data, methods and statistical analysis behind the Australian X-Zelit results.
| Area | X-Zelit result | Why it matters |
|---|---|---|
| Blood calcium | Higher serum calcium reported at calving and through early lactation. | Calcium balance is central to reducing fresh cow pressure after calving. |
| Milk yield | Average daily milk yield was higher in the X-Zelit group. | Transition cow performance is measured by how strongly cows start lactation. |
| Milk solids | Total milk solid yield was consistently higher in the X-Zelit group. | Milk solids are commercially important in Australian dairy systems. |
| Rumination | Rumination time was significantly higher in animals fed X-Zelit. | Rumination is a practical fresh cow indicator linked to intake and recovery. |
| Reproduction and immunity | Positive trends were reported, with further study recommended. | These indicators help show whether transition support is carrying through beyond calving. |
Apply the results to your close-up cow program.
Every farm’s transition program is different. Use the Australian trial results alongside ration advice, herd history and practical close-up cow management.
Review calcium-related fresh cow issues
Look at milk fever cases, subclinical hypocalcaemia risk, retained foetal membranes, ketosis pressure and slow fresh cow starts.
Check the close-up ration
Work with your nutrition adviser to understand how X-Zelit fits into the pre-calving diet and feeding system.
Start before calving
X-Zelit is a pre-calving strategy. It is used before the cow reaches the calcium pressure point at calving.
Want to discuss the Australian X-Zelit results?
Talk to the X-Zelit Australia team or your nutrition adviser about how the local trial results relate to your herd, ration and close-up cow program.