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

 

China Shopping: NZ-China FTA Upgrade Agreed Among Slew Of New Deals

New Zealand Prime Minister Bill English and China Premier Li Keqiang signed off a series of cooperation deals spanning trade, customs, travel and climate change and confirmed commencement of official talks on an upgrade to the nine-year old free-trade agreement between the two countries. More>>

ALSO:


Media: TVNZ Flags Job Cuts To Arrest Profit Decline

Chief executive Kevin Kenrick said the changes were aimed at creating "a sustainable future video content business for TVNZ in an ever-changing media market." More>>

ALSO:

Reserve Bank: Wheeler Keeps OCR At 1.75%

Reserve Bank governor Graeme Wheeler kept the official cash rate unchanged at 1.75 percent, as expected, and reiterated his view that the benchmark rate doesn't need shifting for the foreseeable future. More>>

ALSO:

Trade Plans: Prime Minister's Speech To International Business Forum

"The work to improve public services, build infrastructure, and solve social problems is possible only because we have enjoyed sustained, solid economic growth. A big reason for that is the Government’s consistent agenda of economic reform, and our determination to open up more opportunities for trade with the world." More>>

ALSO:

Get More From Scoop

 
 
 
 
 
 
 
 
Business
Search Scoop  
 
 
Powered by Vodafone
NZ independent news