Introduction

Chanelle Vet UK Ltd

Address: CBX11 West Wing

382-390 Midsummer Boulevard

Milton Keynes, Bucks MK9 2RG

Telephone: 01908 843636

Fax: 01908 847401

Website: www.chanellevetuk.com

 

Company name: Chanelle Animal Health Limited

7 Rodney Street

Liverpool

L1 9HZ

Tel & Fax: 01568 750432

Website: www.chanellegroup.ie

Presentation

A white to off white powder for incorporation into feedstuffs and for oral administration. 1 g Zerofen 4% Powder contains 0.04 g of Fenbendazole.

Uses

Zerofen 4% is a broad spectrum anthelmintic for the treatment of pigs infected with immature and mature forms of nematodes of the gastro-intestinal and respiratory tracts including:

Hyostrongylus rubidus (red stomach worms)

Oesophagostomum spp. (nodular worms)

Ascaris suum (eel-worm)

Trichuris suis (whipworm)

Zerofen 4% is also effective in the control of Metastrongylus apri (lungworm)

Zerofen 4% Powder has an ovicidal effect on nematode eggs.

Dosage and administration

No dietary control is required before or after treatment. Assess bodyweight as accurately as possible before calculating the dosage.

Zerofen 4% Powder is suitable for herd medication of pigs or individual treatment of animals. The standard dose rate is 5 mg fenbendazole/kg bodyweight.

Zerofen 4% can be safely used during pregnancy and lactation.

Routine treatment - herd medication

Zerofen 4% Powder may be administered to pigs either as a single dose or by divided dosage over 7 days. It may also be administered to sows over 14 days. All methods of treatment are equally effective.

(a) Single dose treatment

For the treatment of growing and finishing pigs, mix 2.5 kg Zerofen 4% Powder into 1 tonne of feed.

If home mixing, it is recommended that the 2.5 kg powder is initially mixed into 25 kg dry feed. This premix should then be mixed into the bulk feed. This quantity of feed will treat on a single occasion:

800 pigs of 25 kg bodyweight each consuming 1.25 kg medicated feed.

400 pigs of 50 kg bodyweight each consuming 2.5 kg medicated feed.

For the treatment of sows of 150 kg bodyweight, each consuming 2 kg medicated feed, mix 9.375 kg Zerofen 4% Powder into 1 tonne of feed. This quantity of medicated feed will treat 500 sows on a single occasion.

For the treatment of sows of 200 kg bodyweight, each consuming 2.5 kg medicated feed, mix 10 kg Zerofen 4% Powder into 1 tonne feed. This quantity of medicated feed will treat 400 sows on a single occasion.

(b) 7 day treatment

The standard dosage (5 mg fenbendazole/kg bodyweight) can be divided and administered in the feed over 7 days. The medicated feed should be prepared as follows:

Pigs	4% powder per tonne of feed	Fenbendazole per tonne of feed	Number of animals treated per tonne of feed
Growing and finishing pigs	360g	14.4g	95
Sows	1340g	53.6g	70

Only to be incorporated by a manufacturer who is approved to mix at a rate of below 2kg per tonne of final feed.

(c) 14 day treatment of sows

The standard dosage (5 mg fenbendazole/kg bodyweight) can be divided and administered to sows in the feed over 14 days. The medicated feed should be prepared as follows:

Pigs	4% powder per tonne of feed	Fenbendazole per tonne of feed	Number of animals treated per tonne of feed
Sows 150kg	670g	26.8g	35
Sows 200kg	714g	28.6g	28

Only to be incorporated by a manufacturer who is approved to mix at a rate of below 2kg per tonne of final feed.

Routine treatment - individual medication

Zerofen 4% Powder may be administered to individual pigs, added to the feed. The dose rate is 5 mg of fenbendazole per kg bodyweight which is equivalent to approximately 3 g of Zerofen 4% Powder per 25 kg bodyweight.

Treatment for specific infections

For the treatment of infections with Trichuris and for control of Metastrongylus apri the dose of 5 mg/kg should be divided and spread over 7 days.

To treat growing and finishing pigs mix 1.5 kg Zerofen 4% Powder into 1 tonne of feed. This can only be incorporated by a manufacturer who is approved to mix at a rate of below 2kg per tonne of final feed. This quantity of medicated feed will treat:

266 pigs of 25 kg bodyweight each consuming 1.25 kg medicated feed per day for 3 days.

133 pigs of 50 kg bodyweight each consuming 2.5 kg medicated feed per day for 3 days.

For the treatment of sows of 150 kg bodyweight, each consuming 2 kg medicated feed per day, mix 5.625 kg Zerofen 4% Powder into 1 tonne feed. This quantity of medicated feed will treat 166 sows for a 3 day period.

For the treatment of sows of 200 kg bodyweight, each consuming 2.5 kg medicated feed per day, mix 6 kg Zerofen 4% Powder into 1 tonne feed. This quantity of medicated feed will treat 133 sows for a 3 day period.

Suggested dosing programmes for pigs

Sows and boars

Treat sows before entering farrowing accommodation and again after weaning. This will maintain the sow's condition and reduce the risk of infection to her piglets.

Boars should be treated every 6 months.

Growing and Finishing pigs

Dose weaners on purchase or on movement to finishing house. Where there is a high risk of Ascariasis (`Milk Spot Liver'), repeat treatment at monthly intervals.

Whole herd treatment

Treatment of the whole herd (all adult and young stock) simultaneously every 6 months will minimise the risk of reinfestation. This should be carried out routinely unless recommended otherwise by a veterinary surgeon. It should also be combined with careful attention to environmental hygiene which is especially important for control of `Milk Spot Liver'.

Outdoor pigs

When clean grazing is available, dose before moving stock onto it. If clean land is not available then pigs should be treated monthly from July to October.

Contra-indications, warnings, etc

Do not use in animals with known hypersensitivity to the active ingredient.

Withdrawal periods

Animals must not be slaughtered for human consumption during treatment. Pigs may be slaughtered for human consumption only after 21 days from last treatment.

Operator precautions

Incorporating into the feed must be performed by a suitably approved manufacturer. Impervious gloves must be worn when handling this product or feed containing this product.

When handling or mixing, care should be taken to avoid direct contact with the skin and inhalation of any dust by wearing protective clothing, rubber gloves and a disposable half-mask respirator conforming to European Standard EN 149 or a non-disposable respirator to European Standard EN 140 with a filter to EN 143.

Wash hands and exposed skin after handling medicated feedstuffs.

Environmental warnings

Dispose of part used and empty containers in the dustbin. Dispose of unused medicated feed with other waste feed.

General precautions

Keep out of the reach of children.

For animal treatment only.

Pharmaceutical precautions

Store in a dry place. Do not store above 25°C. When preparing medicated feed for pigs which are to be administered over a number of days, to ensure thorough dispersion the product should first be mixed with 2.5 kg per tonne of feed before incorporation into the final mix.

The product can be incorporated into pelleted feed preconditioned with steam at a temperature not greater than 45°C.

The product will remain stable in the finished feed for 12 months.

Legal category

POM-VPS

Packaging Quantities

500 g, 1 kg and 10 kg.

Further information

Fenbendazole belongs to the Benzimidazole (1-BZ) class of anthelmintics.

Marketing authorisation number

Vm 11990/4012.