Video | Agriculture | Confidence | Economy | Energy | Employment | Finance | Media | Property | RBNZ | Science | SOEs | Tax | Technology | Telecoms | Tourism | Transport | Search

 

Deer need a triple drench

Deer need a triple drench

Deer farmers are being strongly advised to use three drench families in combination to keep parasites under control.

This follows four years of research showing that internal parasite resistance is becoming widespread across the industry. Deer Industry New Zealand (DINZ) producer manager Tony Pearse says the use of one drench family – mectins – applied as pour-ons, along with poor application technique, are the cause.

“Replacing a mectin pour-on with an injectable can dramatically improve growth rates, but the best bet – based on recent on-farm trials – is to use a triple mix: a mectin injection, plus a white/clear combination oral drench.”

He knows of farmers who have increased weaner growth rates from 250 g a day to 400 g a day just by switching to a mectin injectable. Better weaner health and a reduction in losses from Yersinia and Johne’s have also been reported.

Importantly, the triple mix helps stave off the inevitable – the day when parasites develop resistance to all three drench families. This is crucial, because trials suggest that two new drenches on the market, Startect and Zolvix, are ineffective in deer.

Before embarking on the preferred triple mix, Mr Pearse says farmers should consult their veterinarian.

“This is because it involves departing from label directions. Once you go off-label, a default withholding period of 91 days kicks-in. With a veterinary prescription this drops to 49 days for Cydectin injection.”

Southland research veterinarian Dave Lawrence, who has conducted the parasite control trials, says deer on all farms tested so far have internal parasites resistant to mectin drenches.

“So far the only treatment shown to be effective against ostertagia-type parasites on these farms is Cydectin injection plus an oral white & levamisole combination drench. Research last year showed that the standard cattle dose of the white drench, oxfendazole, was inadequate for deer and that more than a triple dose is required.“

He says the recommended drench regime is available from deer veterinarians and is posted on the DINZ website, along with detailed internal parasite management advice.
“It is important to get dose rates right. Under-dosing accelerates resistance. Over-dosing can be fatal.”

Dr Lawrence also advises farmers to adopt integrated parasite management practices that reduce both the need for drenching and the risk of resistance developing. This includes quarantine drenching of incoming animals, minimising the drenching of adults and integrated grazing with other livestock species.

“Farmers who are taking an integrated approach to managing internal parasites are absolutely rapt. They are getting their animals away earlier at heavier weights,” he says.

“And don’t think resistance won’t happen to you. Deterioration in drench efficacy can happen rapidly. A 50 per cent reduction in three years is not unheard of.”

The trials have been funded by DEEResearch – the agency that channels farmer levies into research – with additional funding from NZDFA branches and the Elk & Wapiti Society.

[ends]

© Scoop Media

 
 
 
Business Headlines | Sci-Tech Headlines

 

Tourism: Employers Welcome Back Working Holidaymakers

Tourism businesses gearing up for the return of Australian visitors from next week will be relieved to learn that they will also have access to an offshore pool of much-needed job candidates, Tourism Industry Aotearoa says. Tourism employers around ... More>>

Commerce Commission: Latest Broadband Report Confirms Improved Performance Of Premium Fibre Plans

The latest report from the Commerce Commission’s Measuring Broadband New Zealand programme shows that the performance of Fibre Max plans has improved substantially. This follows a collaboration between the Commission, its independent testing partner, ... More>>

Air New Zealand: Capital Raise Deferred

Air New Zealand has decided to defer its planned capital raise to later in 2021 allowing more time to assess the impacts of recent developments on the airline’s path to recovery. 'We’ve seen some clearing of COVID-19 clouds recently, with ... More>>

Commerce Commission: Cartel Conduct Now Punishable By Up To 7 Years’ Jail Time

Cartel conduct can now be punished with a term of imprisonment of up to 7 years, after the Commerce (Criminalisation of Cartels) Amendment Act 2019 came into effect today. Cartel conduct includes price fixing, market allocation and bid rigging (see ... More>>

Stats NZ: New Report Shows Impact Of Demands On Land In New Zealand

A new environmental report released today by the Ministry for the Environment and Stats NZ, presents new data on New Zealand’s land cover, soil quality, and land fragmentation. The land cover data in the report, Our land 2021 , provides the most ... More>>

ALSO:

Stats NZ: March Card Spending Rebounds Despite COVID

There was a lift in retail card spending in March following a fall in the lockdown-disrupted February month, Stats NZ said today. Seasonally adjusted retail card spending rose by $53 million (0.9 percent), compared with February 2021. Visit our website to read ... More>>

PwC: Outcome Of Review Into Air New Zealand Gas Turbines Business

Air New Zealand has received the report into its Gas Turbines business from independent external advisers PwC. Air New Zealand Chairman Dame Therese Walsh says the report identified a range of effective controls in the Gas Turbines revenue contracting ... More>>