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Immunity
Goats develop a poor immune
response to worms
they do develop some immunity
but is less than sheep and cattle
experimental work at Massey
showed good immunity to
T.colubriformis but poor to
Haemonchus contortus
goats need additional help to
control their worms throughout
life
Immunity will take about 6 months
to start to develop and about 18
months before it is maximal
Immunity will decline around
kidding (as with the PPR in sheep)