ONE farmer has lost up to 30 per cent of his young ewes to Phalaris poisoning, according to Central Tablelands Local Land Services (LLS) regional veterinarian Bruce Watts.
Mr Watts said the spike was unusual and urged landholders to remain vigilant after recent rain.
“It’s not unusual to occasionally lose one or two sheep due to phalaris staggers, however, in recent months LLS vets have investigated half a dozen cases between Bathurst and Orange involving significant numbers,” Mr Watts said.
Phalaris is a highly productive pasture species. During rapid growth the plant produces alkaloids which can damage the nervous system.
Characteristic signs of toxicity are head nodding and bunny hopping with a wide based gait.
Mr Watts reminded farmers use caution when bringing new sheep on to a property.
“Animals most at risk are young sheep that have been recently brought on to the property,” he said.
Phalaris poisoning can cause sudden death from either heart failure or brain disease within 48 hours of exposure to Phalaris pastures.
“Exposure can result in permanent brain and nervous system damage, and losses can continue for up to 5 to 6 months after initial exposure,” he said.
“Unfortunately there is no cure, although the application of cobalt bullets before sheep are moved onto Phalaris pastures can prevent the development of Phalaris staggers for at least two years.”
While cows are less susceptible to the problem, cases can occur.
- Local Land Services
