The Importance of Supplements for Cattle in the Wet Season

The Importance of Supplements for Cattle in the Wet Season

With the wet season fast approaching it’s time to think about Phosphorous (P) supplements for your cattle. The majority of Northern Australia’s soils are considered acutely deficient as they have less then 4ppm of Phosphorus. Phosphorus is a vital mineral for many body functions including utilisation of energy and protein, bone formation, high feed intake and improved weight gain and fertility.
Signs of P deficiency include decreased feed intake, poor growth and fertility rates, low weaning rates, peg leg, rough coats, and bone chewing. When bone chewing occurs there is a risk of Botulism which can prove fatal. P deficiency can be identified through testing of soil, plants, dung and blood as well as observations of the cattle.


The recommended intake varies between class of cattle and desired weight gain or lactation. Lactating cows require more P then steers and heifers gaining weight.



During the wet season when the energy and protein levels in the feed are high the need for Phosphorus increases as it becomes the limiting nutrient. When fed Phosphorus during the wet season cattle can show a great response with improved liveweight gain, improved fertility, and increased milk production.



Phosphorus supplementation is available in different forms including- loose lick, blocks, and straight Phosphorus sources. The main sources of Phosphorus used in the feed industry are Dicalcium Phosphate (DCP), Mono-calcium Phosphate (MCP) and Mono-dicalcium Phosphate (MDCP). When choosing a Phosphorus supplement, it is important to look at the percent of Phosphorus provided and the recommended intake to ensure you are getting value for your money.



To discuss your available tests, wet season feeding options, and for a quote please call Susannah on (08) 8971 1293 / 0474 000 319 or email susannah@bilbagroup.com.au.