The control of parasitism in fat lamb production by routine dosing with tetramisole, thiabendazole and a morantel-diethylcarbamazine combination
Cornwell, R.L.; Jones, R.M.; Pott, J.M.
Veterinary Record 89(25): 659-662
1971
ISSN/ISBN: 0042-4900 PMID: 5168552 Document Number: 37918
Field trials involving 720 lambs were carried out on six farms in Kent and Sussex during the months of May, June and July under conditions of subclinical infection with gastro-intestinal nematodes, chiefly moderate numbers of Nematodirus and smaller numbers of Ostertagia. Over a nine-week observation period beginning when the lambs were four weeks old, improvement in weight gain over controls resulted from dosing on three occasions at three-weekly intervals with tetramisole, thiabendaxole, or a morantel/diethylcarbamazine combination. There was no significant difference between the three treatments. The relative cost of treatment in decreasing order was (retail cost in new pence per animal): thiabendazole, 17.5p, tetramisole 13.5p, morantel/diethylcarbamazine 11.5 p.