WORMING with Fenbendazole - - How much?

[casportpony]

Is wazine safe for peafowl and pheasants?

Safe for gamebirds, but remember that it treats only large roundworms.

-Kathy

 

[tdwise]

Since it has been several months since I last wormed the chickens with fenbendazole (I use the liquid goat wormer stuff),  I did an internet search for dosage and egg withdrawal for chickens.  I was happy to find this March 2014 announcement on the Merck animal health website:

Here is the link to the entire article:  http://www.merck-animal-health.com/news/2014-3-24.aspx 

In doing some web research last time I used it, which was the first time too,  I found several scientific research pages that basically said you can't easily overdose an animal on this stuff. So I was comfortable with the idea that it was pretty harmless except to parasites.  To find out that there is no withdrawal period for eggs is the icing on the cake.  Fenbendazole saved my rooster who had a bad infestation of gapeworm that developed over the winter.  It is good stuff.  I hope the FDA approves fenbendazole for chicken use in this country soon.

this is so AWESOME!!

 

[casportpony]

Since it has been several months since I last wormed the chickens with fenbendazole (I use the liquid goat wormer stuff),  I did an internet search for dosage and egg withdrawal for chickens.  I was happy to find this March 2014 announcement on the Merck animal health website:

 
SUMMIT, N.J., 24 March 2014 – Merck Animal Health (known as MSD Animal Health outside the United States and Canada) today announced that, following a positive opinion from the Committee for Medicinal Products for Veterinary Use (CVMP), the European Commission has granted the marketing authorization for the veterinary medicinal product PANACUR

AquaSol (fenbendazole 200 mg/mL) for use in chickens.
PANACUR

AquaSol is a highly stable, farm-friendly, water-administered suspension product produced with an innovative wet-milling technology. It is currently available in the EEA for use in swine.
“We are very pleased that the European Commission has approved PANACUR

AquaSol for chickens,” stated Fabio Paganini, Associate Vice President, Merck Animal Health. “PANACUR

has a long history of proven results as a leading dewormer and we are excited to bring this option for convenient water administration to chicken farmers throughout the EEA.”
Approved indication:

PANACUR

AquaSol will be indicated for the treatment of gastro-intestinal nematodes in chickens infected with:

• Ascaridia galli (L5 and adult stages)
• Heterakis gallinarum (L5 and adult stages)

Through the company’s proprietary wet-milling technology, PANACUR

AquaSol is a highly stable suspension which, as a result of smaller more uniform particle size, does not require frequent agitation and provides both a high level of efficacy and convenience.
PANACUR

AquaSol has been proven safe for all types of chickens, including layers, broilers and breeders. It has a zero day withdrawal period for eggs and a six day withdrawal period for meat and offal.

Here is the link to the entire article:  http://www.merck-animal-health.com/news/2014-3-24.aspx 

In doing some web research last time I used it, which was the first time too,  I found several scientific research pages that basically said you can't easily overdose an animal on this stuff. So I was comfortable with the idea that it was pretty harmless except to parasites.  To find out that there is no withdrawal period for eggs is the icing on the cake.  Fenbendazole saved my rooster who had a bad infestation of gapeworm that developed over the winter.  It is good stuff.  I hope the FDA approves fenbendazole for chicken use in this country soon.

Note that it has zero day egg withdrawal in the UK when it's given at 1 mg/kg for several days. That amount will treat large roundworms and cecal worms, but will not treat capillary worms and gapeworms.

-Kathy

 

[tdwise]

OK I'm confused....1mg is equal to 100ml...posters are saying we only need to put 3 to 4 ml per gallon of water....and US is 10% suspension and UK seems to be 20%....are you saying I'm not even worming my chickens at all with 3ml of fenbendazole?

 

[casportpony]

OK I'm confused....1mg is equal to 100ml...posters are saying we only need to put 3 to 4 ml per gallon of water....and US is 10% suspension and UK seems to be 20%....are you saying I'm not even worming my chickens at all with 3ml of fenbendazole?

Welcome to BYC!

Safeguard and Panacur *AquaSol* are 20% (200 mg per ml), and they cost around $300 a liter, so I doubt that many people will be buying it. The stuff most people buy is Safeguard for goats, and is 10% fenbendazole (100 mg per ml), which means:

1 mg = 0.01 ml
10 mg = 0.1 ml
100 mg = 1 ml

3 ml = 300 mg
4 ml = 400 mg

It's true that there are lots of posts that say one can use 3 to 4 ml per gallon for three days, but that amount is unlikely to treat any worms, and I can show you graphic pictures of birds that died because they were treated that way. Additionally, 10% Safeguard is *not* water soluble.

If you think you have worms it would be best to consult with a vet and figure out what worms you need to treat. When I suspect worms I treat with 10% Safeguard @ 0.23 ml per pound orally for 1-5 days. If I suspect roundworms or cecal worms, I would give a six pound hen 1.4 ml once and repeat in ten days, but if I suspected capillary worms, she would get that amount for 5 days.

With Safeguard 10 %, 1 mg/kg = 0.0045 ml per pound, or 0.027 ml for a six pound hen. FWIW, 0.027 ml is probably about a drop.

Does that help?

-Kathy

 

[casportpony]

 

[tdwise]

Maybe lol... so I should treat 6 hens with 8.4ml a day? If it is not water soluble can I inject it into watermelon?

 

[tdwise]

I do not suspect capillary only tape worms... I use DE regularly but we have had soooo much rain that I have been unable to avoid the tape worms... I have also learned a lot more about preventing them, use of ACV, etc... I just need to eradicate them and start fresh. Thank you for your help.

 

[casportpony]

Maybe lol... so I should treat 6 hens with 8.4ml a day? If it is not water soluble can I inject it into watermelon?

I do not suspect capillary only tape worms... I use DE regularly but we have had soooo much rain that I have been unable to avoid the tape worms... I have also learned a lot more about preventing them, use of ACV, etc... I just need to eradicate them and start fresh. Thank you for your help.

If you have tape worms you should treat them with praziquantel. Least expensive way to treat for tapes is with EquiMax horse paste. Give 0.16 ml per 5 pounds orally and repeat in 10 days. Some studies say that Safeguard given orally 3 days in a row will treat *some* species of tapes, but many people have reported that it doesn't, so get some EquiMax paste and try it.




-Kathy

 

[casportpony]

Maybe lol... so I should treat 6 hens with 8.4ml a day? If it is not water soluble can I inject it into watermelon?

How much does each hen weigh? If each hen weighs about 6 pounds, then yes, that about the amount that I use.

-Kathy