UNE Trial Results

University Trials prove the benefits of MegaMin for stock during drought conditionsjohnathon


Drought / Dry Feed Trial Data


Trials performed by Dr Lewis Kahn, at the University of New England have shown that MegaMin Loose Supplement provides a SAFE, ECONOMICAL and EFFECTIVE alternative to the use of UREA for winter and drought feeding as well as a natural alternative to products commonly used as an acidosis preventative in grain rations.


Client testimonials relating to the use of these products have suggested benefits such as improved utilization of low quality feeds; reduced grazing pressure; prevention of acidosis during grain feeding; improved conception rates and improved animal health.


However, in an effort to validate these benefits, Dr Lewis Kahn (BRurSc, PhD Animal Science) was commissioned to conduct independent trials at the University of New England, Armidale.


These trials have quantified and confirmed many of the benefits that farmers using MegaMin Loose Supplement and MegaMin Lick Blocks have reported.  (MegaMin Lick Blocks are based on MegaMin Loose Supplement.)


Trial Objective:

To determine the effectiveness of using MegaMin Loose Supplement as an alternative to feeding Urea during dry weather and drought conditions.


Animals: 27 Hereford weaner steers with 3 pens (each with 3 animals) per diet.  Average weight of stock: 285kg.


Location: Kirby Feedlot, University of New England


Duration: The trial was conducted over two periods with period one being on low quality feed and period two being an even lower quality feed to simulate deepening drought conditions.


Period 1: Low Quality Feed (64 days)

The cattle were fed a roughage mix of 80% Barley Chaff and 20% Lucerne Chaff with three pens receiving MegaMin Loose Supplement (29 grams/day) and three receiving Urea (75grams/day) as a supplement. As a control, three pens received no supplement. During this period all cattle gained a marginal amount of weight.


Period 2: Drought Feed Ration (49 days)

To simulate deteriorating fodder quality as would be experienced during a drought, a reduction in the amount of  lucerne from 20% to 5% of the ration was implemented in the second trial period. Three pens received MegaMin Loose Supplement (44 grams/day) and three receiving Urea (94 grams/day) as a supplement.  As a control, three pens received no supplement. Over the course of the 49-day period, all cattle lost weight with the steers fed MegaMin Loose Supplement having the lowest weight loss.


Average weight loss for total trial period (113 days)

  • Control – 19.8kg
  • Urea – 15.0kg
  • MegaMin – 6.1kg
While the difference in weight loss was not statistically significant, the reduced weight loss in animals using MegaMin is commercially important when cattle are experiencing exposure to low quality feeds.

Trial Results

Proven benefits of Minerals: The results of these trials clearly confirmed that the use of MegaMin can assist stock to maintain condition when grazing dry fodder during Winter or drought conditions.


Over the course of the trial, all cattle lost weight however the steers fed MegaMin Loose Supplement had the lowest weight loss, providing a $19 per head advantage compared to stock supplemented with urea.


Reduced Weight Loss = $$$’s Saved

Steers on MegaMin Loose Supplement lost less weight than the animals on the control and urea rations. Using the sale price of $2.00 / kg, the charts on the right show the substantial cost savings for the animals that were fed MegaMin.

Continued benefits…

Following the trials, the cattle were returned to pasture for two months. Animals that had been fed MegaMin Loose Supplement during  the  trial  period  showed  an  increased  weight  gain  of  67 grams / day compared to the control group.


University Trials: Natural, Economical & Effective alternative to Eskalin (antibiotic) and Rumensin (ionophore) for grain feeding




To evaluate the use of MegaMin Loose Supplement as an acidosis preventative and to evaluate growth performance of feedlot steers.

MegaMin Loose Supplement can help prevent Acidosis

In comparison to the antibiotic Eskalin® and ionophore Rumensin®, UNE research indicated that the use of MegaMin Loose Supplement provided equivalent animal health protection and growth performance.


No evidence of any animal health problems (eg acidosis) were evident during the trials. The level of Volatile Fatty Acids (chart on left) and the rate of digestion (right) indicate that cattle fed MegaMin Loose Supplement performed equally as well as cattle fed Eskalin® or Eskalin® and Rumensin®.

Economical Production...

Growth rates were not significantly different for the various additives however, the lower cost and higher weight gain for cattle fed MegaMin Loose Supplement is of commercial importance. Carcass grading suggested that animals fed MegaMin Loose Supplement performed better than those fed Eskalin® and Rumensin®.

Lot Feeding: I noticed the difference

Claude Pain, ‘Boobilarri’, Jandowae has been using MegaMin Loose Supplement as an acidosis preventative in his feedlot for two years. Here is what he has to say...

“I use Sorghum grown on our property in conjunction with Copra meal, roughage and MegaMin Loose Supplement at the rate of 16kg per tonne.

When I first introduced MegaMin Loose Supplement to the grain I noticed that the cattle had increased energy as well as changes in the manure. 


  • Smell in the feedlot has definitely decreased
  • Manure is darker and firmer
  • Cattle look impressive with a good coat colour


I am more than happy with the weight gain of heifers entering the feedlot at around 300 kg and being turned off at 400-430 kg after a 60-70 day period.


Another key point is that the water troughs in the feedlot are cleaner since using MegaMin Loose Supplement. Because I cleaned the troughs daily, I particularly noticed this change.” Read More>