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Photo of proper drenching technique

Proper drenching procedure is essential for dewormer efficiency. Make sure the animal’s chin is level and that the nozzle dispenses behind the tongue. Alternatively, use an injectable for internal parasites.

Controlling parasites in sheep and goats
Any producer of sheep or goats who has had to deal with internal parasites (worms), knows how important a strategic attack is for combating these organisms.
First, a few facts about small ruminant parasites:
  1. Livestock pass internal parasite eggs in their manure. Eggs hatch and go through several larval stages until they reach an infective stage (approx. 24–35 days).
  2. About 25% percent of the worm eggs shed last fall survived the winter and will hatch and develop into infective larvae.
  3. Some worms hibernate over winter in the gut and become active egg layers in the spring. So ewes may have some worm load in the spring even though they have not consumed eggs for six months.
  4. Parasites retain enough nutrients that they can survive for long periods in the infective stage (up to 120 days), depending on the climate.
  5. Lactating ewes and young lambs are much more susceptible to internal parasites.
Options for dealing with worms:
  1. Multi-species grazing
    Sheep and goats share many of the same parasites, but cattle and horses do not. Implement a pasture rotation that allows one species to graze. Then after an adequate rest period, the other species grazes the field.
  2. Pasture management
    Most larvae are found in the first 2–3 inches of forage growth. The goal is to move the flock out of a pasture before they graze down to levels where the parasite will be consumed.
Additional Resources:
  1. Dewormers
    When it comes to wormers there are a lot of choices. White wormers such as Valbazen and Safe-guard. Ivermectins such as Cydectin, Ivomec, Dectomax and levamisole, which is marketed as Prohibit or LevaMed. The outliers are Goat Care-2X and Livamol® with BioWorma®.
Internal parasites continue to be a threat to sheep health and productivity. An effective plan will save a lot of money, effort and heartache. Questions? Contact us via Premier’s FREE Ask An Expert advice service, or join the discussion on Premier’s Sheep & Goat Facebook page.
Livamol® with BioWorma®

Livamol® with BioWorma®

A feed supplement to control the spread of parasitic larvae in the pasture

Livamol® with BioWorma® contains a naturally occurring fungus that captures and consumes infective worm larvae (including chemical and anthelmintic resistant larvae) within the manure of grazing animals.

For best results:
  1. Treat animals with a suitable
    oral, injectable, or pour-on wormer/anthelmintic to rid the
    animals of worms.
  2. Move treated animals onto low worm pasture (ideally not grazed by the same animal species for a minimum 6 weeks).
  3. Commence daily use of Livamol® with BioWorma® to minimize pasture infectivity and maintain the animal’s low worm status.
  4. Thoroughly mix Livamol® with BioWorma® with feed or feed supplements. It will begin to work immediately within the manure.
  5. Recommended for strategic use during periods when weather conditions are conducive to larval development and transmission on pasture at temperatures above 5° Celsius (40° Fahrenheit) throughout the year. Use in conjunction with a recommended worm management strategy program for your area.
Livamol® with BioWorma® has been used successfully to eliminate larvae from the pasture in Europe and Australia, but is relatively new to the USA. It does not eliminate parasites present in the animal. Animals need to be treated with a dewormer/anthelmintic to first to rid the animals of worms.
Roundworm Lifecycle
Host Stage diagram
Host Stage
Internal parasites produce thousands of eggs which are distributed via the animals’ feces.
Dung Stage diagram
Dung Stage
Eggs develop and hatch into larvae. Larvae feed on bacteria within the dung.
Pasture Stage diagram
Pasture Stage
Larvae mature into infective stage. They move via moisture (dew) onto plants where they are consumed by livestock.
Management tools to fight parasites
Phillips Auto Drench Gun
Phillips Auto Drench Gun — $144
Most reliable unit from Australia. Cylinder is more durable and ergonomic than others. 0–20 ml.
Auto Syringe & Drencher
Auto Syringe & Drencher — $35
Easy way to vaccinate or drench many animals without having to refill after each animal. 6 ml.
Dectomax® Injectable
Dectomax® Injectable —from $73
An injectable solution that will treat or control 7 types of parasites.
Cydectin® Sheep Drench — from $84
For use in healthy sheep to control 13 types of adult and larval stages of internal parasites.
Ivermectin Sheep Drench
Ivermectin Sheep Drench — $70
For the treatment and control of adult fourth-stage larvae in sheep.
Prohibit® — $23
Broad-spectrum anthelmintic. Effective against the following nematode infections in cattle and sheep: Stomach worms, intestinal worms and lungworms.
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Questions? Call Us.
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Fax: 800-346-7992 or 319-653-6304
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Monday - Friday: 7 am - 5:30 pm CT
(January - December)

Saturday: 8am - 12 noon CT (March - September) and Closed (October - February)

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