It is economically important to deworm adult cattle at strategic times to improve production and reproduction. The best times would be early summer (Oct-Nov) & before winter season (April/May). Deworming at these strategic times will help to:
Of the 3 internal parasite groups (Roundworms, Tapeworms, Fluke worms), 2 are of major importance in adult cattle:
1. Roundworms and they cause:
Although adult cattle may develop resistance against roundworm species, these parasites may have an influence on production, especially when animals are subjected to stress. Stress can include the transition period (just before and after calving), as well as nutritional (low quality /quantity feed) and environmental (drought and extreme weather) related stress.
2. Liver fluke on the other hand causes liver damage to such an extent, that it:
Although cattle produce “antibodies” that are detectable via an ELISA test, cattle do not develop protective immunity against liver fluke.
Proof of why deworming Cattle is of importance:
A summary of 21 trials in the USA by Taylor (1996) – 6 trials & Bliss (1997) – 15 trials, showed the following ROI (return on investment) on deworming in the following production systems:
With all the above trials one can see why it is important to deworm adult cattle at strategic times to improve production and reproduction. Contact your local Virbac Technical sales adviser to help you choose the correct products that can be used in a program for your farm to reduce the risk and negative impact of internal parasites in cattle on your farm.