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close this bookIntegrated Helminth Control - KARI technical note no. 2 (DFID - KARI, 1999, 54 p.)
View the documentABOUT THIS MANUAL
View the documentPART ONE - The Helminth Diseases of Kenya
close this folderPART TWO - Helminth Control Advice, summarised by area
View the documentWestern Kenya Sugar Zone
View the documentWestern Kenya Grain Zone
View the documentWestern Kenya Tea Zone
View the documentCentral Kenya High Altitude Zone
View the documentSemi-arid Zone, Smallholder Farms
View the documentSemi-arid Zone, Pastoralist Producers
View the documentSemi-arid Zone, Large Scale Ranches
View the documentArid Zone, Pastoralist Producers
View the documentCoastal Sub-humid Zone
close this folderPART THREE - Guidelines For Anthelmintic Use
View the document(introduction...)
View the documentSheep And Goat Wormer Guide
View the documentCattle Wormer Guide
close this folderPART FOUR - The Strategies
View the documentTreating only clinical cases
View the documentAnaemia Diagnosis
View the documentSeasonal Anthelmintic Use
View the documentRapid Rotation
View the documentDose & Move
View the documentMedicated Feed Blocks
View the documentToxocara Treatment
View the documentUse of narrow spectrum drugs
View the documentAlternate Grazing
View the documentBoma Rotation
View the documentUse of genetic resistance
View the documentMixed use of broad and narrow spectrum drugs
View the documentCropping Rotation
View the documentSeasonal Fluke Treatment

Semi-arid Zone, Smallholder Farms


Typical Problems In This Area

1. Smaller farms in this zone can seldom manage to support many animals. Feed tends to always be in short supply and animals suffer constant nutritional stress.

2. Worm burdens often build up slowly and coupled with poor feeding lead to a long-term chronic condition.

3. Trichostrongylus, Haemonchus and Oesophagostomum can all be present and contribute to a generalised parasitic gastroenteritis.

4. During the dry seasons invading larvae may enter a period of delayed development in the animal (Inhibited worms).

Features Of The Area That Can Help In Control

1. Transmission is seasonal and a significant portion of the year is too dry for worm larvae to survive on pasture.

2. When inhibited worms are present, drug treatments can be efficiently targeted at these.

Control Methods That May Be Useful

· Frequent observation of individual animals and treating only clinical cases.

· Since rates of infection are seasonal, treatments can be targeted at times of year when there are peaks of infection.

· Since periods of poor grazing and nutritional stress are seasonal, treatments can be timed to alleviate chronic infections.

· At certain times of year a large part of the overall worm population is present as inhibited larvae. By correctly applying an effective drug at this time, infection rates can be reduced for the ensuing dry season.

· Keeping local breeds of animals rather than exotics can lead to higher production at lower treatment costs (Genetic Resistance).