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Evaluation of Parasite Control Programmes in Beef Cattle
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2002-06-01
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Hickey, M.C., Earley, B., French, P., Keane, M.G., Evaluation of Parasite Control Programmes in Beef Cattle, End of Project Report, Teagasc, 2002.
Abstract
The objective of this project was to examine the effect of
methods of animal management in a dairy calf to beef (Study 1) and
a suckler beef (Study 2) production system on parasitic burdens of
calves and accompanying animals. Parasitic burdens were defined by
quantifying faecal egg counts and plasma pepsinogen levels (concentrations
greater than 1U/l are an indicator of a possible heavy parasitic
burden).
In the first study three different grazing systems for dairy calves
and steers, were investigated. The leader follower system (L-F1) was
described by calves grazing ahead of steers; the separate (S) system
was described by calves and steers grazing separate areas and thirdly
the combined (T) system where both calves and steers grazed
together. In the second study, two different grazing systems for
suckler cows and calves, and yearling animals were examined. The
leader follower (L-F2) system was described by yearlings grazing ahead of suckler cows with calves at foot or a conventional (C)
system where the cows and calves grazed areas separate to the
yearlings.