WORM CONTROL - ROTATION IS THE KEY TO SUCCESS
Posted by Robert Best, 10 Apr, 2009
The importance of regular worming cannot be understated and as importantly, neither can the need for rotational use
of worming preparations to ensure population resistance does not occur. The effective control of parasite numbers in
the horse and its immediate environment can be achieved through strategic use of effective de-worming preparations
and environmental control utilizing strategic management practices.
Worms and other intestinal parasites are recognized as being potentially detrimental to horse health and wellbeing
and it is therefore a critical welfare issue to ensure a regular and effective worming strategy is employed.
Additionally, due to the nature of intensive stabling, high stocking densities and co-mingling at competitive events,
the chance for contamination and subsequent infestations to take hold is greatly increased.
Types of intestinal worms include; Large roundworm (Parascaris equorum), Large strongyles (bloodworms,
Strongylus spp.)*, Small strongyles (redworms, Cyathostomes)*, Pinworm (Oxyuris equi), Tapeworm (Anoplocephala
perfoliata)*, Immature Trichonema sp., Triodontophorus sp., Strongylus vulgaris along with bots, Hair worms,
Threadworm, Stomach worms and Lung worms. The adverse effects of worm burdens range from persistent diarrhea
and general ill thrift to anaemia, gastro intestinal disturbance ie; colic, persistent coughing and pneumonia.
*The most common species are those marked by asterisk
It is generally recommended that effective de-worming products from several different chemical classes be selected
for use in a ‘rotational' worming program in order to avoid the development of ‘resistance' to worming products. This
rotational program may aid in delaying the onset of potential resistance by worm populations. Furthermore, more
often than not, horses are infected with multiple species and therefore, a broad spectrum wormer is recommended
and should be administered every 6-8 weeks using interval dosing.
The major classes of anthelmintics (de-worming preparations) are categorized into three primary sub-headings which
include;
1. Macrocyclic Lactones (ML's) (Ivermectin and Moxidectin)
2. Benzimidazoles (BZ's)
3. Pyrimidines (PD's) (Morantel and Pyrantel)
In addition, the use of effective environmental management is also recommended and necessary to compliment the
use of medicinal preparations for the control of parasite populations. Practicing the following management practices
will also aid to ensure worm burdens are minimized;
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Since 1960 Ranvet has continued to research the science of horse training and has designed, tested, refined and then marketed products to satisfy the most specific needs of the performance horse. After more than 40 years producing product for the equine athlete, Ranvet has now formulated a range of products for the greyhound racing industry (these products will be listed in 'other'.)
| Contact: | Robert Best |
|---|---|
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| Address: | 774 Ohario Valley Rd, Johnsonville Wellington |
| Phone No. | 044789091 |
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