In early autumn, be on the lookout for:
- Most common in intensively farmed livestock.
- Stress and high stocking density are common precursors to an outbreak.
- Causes profuse diarrhoea. Sheep may be found dead and pregnant ewes may abort.
- Read more on salmonellosis of sheep.
Ergot alkaloid poisoning (ergotism) in stock
- May occur if stock eat grain contaminated with ergot at greater than 0.02% by weight. (Ergots are part of a fungus that forms in seed heads, especially ryegrass.)
- Ergots may concentrate in the last 20% of silo grain so producers should recheck grain for the level of ergots when it is fed out.
- Common signs of ergotism in WA are heat stress and reduced production.
- Read more on ergots.
Grain overload, acidosis or grain poisoning in stock
- Affects cattle, sheep or goats being fed grain without a gradual introduction or after a sudden change to diet.
- Signs include depressed appearance, diarrhoea, bloating, rapid breathing, dehydration, lying down and deaths.
- Read more on grain overload, acidosis, or grain poisoning in stock.
Summer pneumonia in sheep
- Typically affects weaners and hoggets during late summer/autumn.
- More common in British breeds.
- Brought on by stressors such as entry to a feedlot, dust and cold stress.
- Acute signs include coughing, labored breathing, discharge from the nose or just general ill-thrift.