Do your sheep need a mineral top up?

13 December 2024

Paul Beltz, Senior Veterinary Officer South West

As sheep producers in the south-west move from lambing into weaning during this dry season, it is essential to consider whether there are any nutritional deficiencies occurring.

Deficiencies will impact livestock health right now and production next year, including weight gain in weaners and fertility in rams and ewes if they are not in good condition or have trace element deficiencies.

Firstly, are the stock getting the energy, protein and fibre they need to stay healthy and grow?

Next, are they getting the minerals and vitamins they need to thrive?

Some commonly seen issues:

• Grain supplementation and grazing cereal crops is known to have low calcium, so calcium supplementation through limestone or lick blocks is essential.
• Poor pasture growth will impact the ‘biome’ or mix of bacteria in the rumen and may lead to various deficiencies including vitamin B1 or ‘stargazer’s disease’.
• Along coastal areas selenium (white muscle disease) and copper (swayback) deficiency are known to occur.

Mineral and trace element deficiencies can be diagnosed through a combination of feed tests, soil tests, blood screening and necropsies where abnormalities are identified, and local knowledge of trace element deficiency.

To make the best decision, identify if you have an issue then figure out the best way to fix it.

Remember that trace elements can be toxic if their levels are too high or low, so work with your consultant, nutritionist or veterinarian to ensure you have the right information.

For specific drought management support, visit agriculture.vic.gov.au/dryseasons or call 136 186.

Media contact: Anna Ferguson

Phone: 0499 540 475