Effects of helminth infection on the pre-weaning production of ewes and lambs: comparison between safe and contaminated pasture.

Abstract

Comparison was made of the performances of cross-bred ewes and their lambs on pastures of low helminth infectivity ("safe" pastures) or contaminated pastures and at high or low stocking rates. Ewes grazing the safe, but not the contaminated, pastures were given a single pre-lambing drench. The largest difference in parasite infection between treatments was… (More)

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