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close this bookBasic Husbandry Practices and Veterinary Care (IIRR, 1996, 60 p.)
View the documentForeword
View the documentBody parts of farm animals
View the documentNames of farm animals
View the documentFarm animals and their young
View the documentLivestock production
View the documentReproduction of poultry
View the documentBreeding
View the documentCare of calves and kids at birth
View the documentCare of piglets
View the documentFeeding orphaned animals
View the documentNutrition
View the documentDeworming
View the documentVaccination
View the documentCastration
View the documentHoof trimming
View the documentDehorning
View the documentClipping milk teeth of piglets
View the documentDisinfection of pen and equipment
View the documentWaste management and disposal
View the documentPesticides


Parasites are a problem in countries with tropical climates like the Philippines. Animals catch parasites from soil and grasses.

Regular deworming with chemical or herbal preparations can reduce the amount of parasites in your animals.

Deworming means removing worms from the digestive system, particularly from the stomach, intestine and liver. Deworming makes the animal more resistant to diseases. It helps the animal grow faster, perform better and produce better milk, meat and eggs.

Symptoms of worm infestation

- Animal lacks vigor.
- It has a poor appetite.
- Its body weight decreases.
- It shows diarrhea with mucus, blood or worms.
- It eats soil or other organic matters.
- It has rough hair coat.
- It has anemia.

Parasites hurt animals by:

- Absorbing digested nutrients.
- Sucking blood.
- Causing mechanical obstruction.
- Destroying tissue.
- Secreting toxins.

Preventing worm infestation in animals

- Proper nutrition.
- Avoid overstocking.
- Practice pasture rotation.
- Avoid keeping several types of livestock together (e.g., goats and cattle).
- Observe cleanliness.

Considerations in deworming animals

Do not deworm animals that are:

- Weak and sick. They need medication; delay deworming.
- Pregnant.
- Lactating.
- Laying.

Common internal parasites


Affect ruminants (cattle, water buffaloes, goats), pigs and poultry.


Affect ruminants, pigs and chicken.

Leaf-shaped worms(liver flukes):

Affect ruminants.

Roundworms, tapeworms and leaf-shaped worms

Guidelines for a deworming program

- Identify the kind of worm present.
- Deworm the animals regularly.
- Deworm young animals 23 times a year, adult animals at least once a year.
- Improve grazing management.

Characteristics of a good dewormer

- It will not easily cause poisoning
- It can kill various worms.
- It is easy to administer.
- It is economical.
- It stays in the tissues for a short period of time.

Common dewormers used


Western drug*



Valbazen, TSD,

Stems of makabuhay

water buffalo,

Latigo 50, 500

(Tinosphora rumpii)



Papaya seeds


Latigo 50, 500

Leucaena seeds




Areca nut or bunga

* The drugs listed in this column are brand names. The generic names for each drug are as follows:

Valbazen and TSD - Albendazole
Latigo 50, 500 - Tetramizole
Pidro - Piperazine

An indigenous way to deworm animals

Beer/Soy sauce. A bottle of beer or soy sauce is given to cattle and water buffalo for deworming. An egg can be mixed with the beer or soy sauce.

Beer/Soy sauce

Deworming program for livestock and poultry


1st dose

2nd dose


Cattle, water buffaloes, goats


1 or 2 months

3-4 months until 1 year

Against all worms

Adult Breeders

Once a year 2 weeks before breeding



Few days after weaning(before vaccination)


Twice a year before breeding and before giving birth



2 months

Repeat after 2 weeks


Before onset of breeding and laying period