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Ask The Vet
Mon Aug 11, 2014 06:41 AM CDT

Question:

In a previous column on fly control, you mentioned if you use fly-control minerals, you must remove all other types of minerals. Why is this? Does this also apply to "high-magnesium" minerals?

Answer:

Salt is what drives animals to consume minerals. Cattle will consume about 0.1 pounds of salt per 100 pounds of body weight each day. All mineral supplements are formulated to deliver the proper amount of each mineral and any other medication (for example: insect growth regulators [IGRs], Rabon, antibiotics, ionophores) based on this level of salt consumption.

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