In NSW, pasture and fodder crops generally contain sufficient minerals, in the appropriate balance, for normal ruminant growth.
Most energy and protein supplement feeds (except non-protein nitrogen supplements, such as urea and sulfate of ammonia) contain sufficient minerals for most production requirements associated with supplementation of grazing stock.
This Primefact reports the mineral composition data for feed samples delivered to the then NSW Agriculture Feed Evaluation Service, prior to 1996.