Thursday, 09 November 2023 11:55

Cut out docking drench

Written by  Staff Reporters
Wormwise programme manager Ginny Dodunski. Wormwise programme manager Ginny Dodunski.

In a normal year, lambs do not require a drench at docking/tailing.

A routine drench at this time may not be generating as much value as farmers might imagine.

Wormwise programme manager Ginny Dodunski says the scouring, reduced appetite and poor growth rates associated with worms are partly a result of an animal’s immune response to internal parasites.

She explains that young lambs have no immune response to worm larvae, so don’t suffer the same negative consequences associated with worm burdens.

Many of the worms that young lambs are ingesting cannot complete their lifecycle so cannot build up numbers until the lamb has a fully functioning rumen at around four to five weeks of age.

“So, if you’re drenching at docking you may not be kicking out as many worms as you think you are,” Dodunski adds.

Another reason for not drenching at docking is the presence of a worm called Strongyloides. This worm has a completely different lifecycle to other internal parasites in that lambs will pick these worms up through their skin or from the ewe’s udder. However, lambs do set up a rapid immune response to Strongyloides at four to five weeks of age.

While lambs may appear dirty, they will dry up of their own accord irrespective of whether or not they have been drenched.

Dodunski says the only time lambs may benefit from a drench at tailing is where ewes are in poor condition, are underfed and not milking – so lambs are forced to eat a lot more grass than would be typical and a drench maybe useful in this circumstance.

More like this

Feeding newborn calves

To ensure optimal growth, health, and wellbeing of calves, feeding strategies should be considered carefully.

Featured

Govt Commits $4m to Rural Wellbeing Initiatives

While the District Field Days brought with it a welcome dose of sunshine, it also attracted a significant cohort of sitting members from the Beehive – as one might expect in an election year.

Shane Jordan Beats Brother to Win NZ Timbersports Title

While not all sibling rivalries come to blows, one headline event at the recent New Zealand Rural Games held in Palmerston North certainly did, when reigning World Champion Jack Jordan was denied the opportunity of defending his world title in Europe later this year, after being beaten by his big brother’s superior axle blows, at the Stihl Timbersports Nationals.

National

Machinery & Products

Chinese Tractors Eye Western Europe

Having caused quite a stir at last year’s Agritechnica, Chinese manufacturer Zoomlion is reported to be conducting large-scale field trials…

Franz Grimme Turns 80

Franz Grimme recently celebrated his 80th birthday earlier March and continues to be an entrepreneur with passion and pioneering spirit,…

» Latest Print Issues Online

The Hound

What A Choice!

OPINION: If you ask this old mutt, the choice at the next election isn't shaping up as a contest of…

Your Call!

OPINION: A mate of yours says we're long overdue for a reckoning on what value farmers really get for the…

» Connect with Rural News

» eNewsletter

Subscribe to our weekly newsletter