The usefulness of suppressive intra-ruminal drenching for control of gastrointestinal helminths in different cattle breeds

Abstract

Cattle from Fn generations of Brahman (B), Hereford X Shorthorn (HS) and Brahman x HS (BX) that grazed as a single herd from birth to weaning and as separate sexes from weaning to 21 months of age were used to test the effectiveness of intra-ruminal drenching with oxfendazole both in controlling mixed infections of gastrointestinal helminths and in increasing gains as a result of worm control. About half the animals in each breed were treated every 3 weeks starting at about 3 weeks after birth whilst the other half acted as an untreated control.