Long acting drenches a tool for spring lambing ewes

摘要

Spring-cleaning' for 'low worm-risk' pastures for spring-lambing ewes really begins in autumn. 'Clean' paddocks for lambing ewes is a good idea because of the 'peri-parturient relaxation of resistance' (PPRR). PPRR is a fancy way of saying'ihat ewes lose much of their resistance to worms from just before lambing and for several weeks after.This means lambing paddocks can get quite wormy by the time weaning time comes around.