References
- Brunsdon , R.V. 1973 . The potential role of pasture management in the control of trichostrongvte worm infection in calves with observations on the diagnostic value of plasma pepsinogen determinations . N.Z. vet. J. , 21 : 214 – 220 .
- Brunsdon , R.V. and Vlassoff , A. 1981 . A morantel sustained-release bolus for (he control of gastro-intestinal nematodes in grazing calves . N. Z. vet. J. , 29 : 139 – 141 .
- Hirschowitz , B.I. 1955 . Pepsinogen in the blood . J. Lab. clin. Med , 46 : 568 – 579 .
- Jacobs , D.E. , Fox , M.T. , Walker , M.J. , Jones , R.M. and Bliss , D.H. 1981 . Field evaluation of a new method for the prophylaxis of parasitic gastroenteritis in calves . Vet. Rec. , 110 : 399 – 402 .
- Korot’ko , G.F. and Myamova , M.E. 1963 . Determination of the proteolytic activity of gastric juice, urine and serum . Sb. Nauch. Tr. Andzhansk Med. Inst , 4 : 114 – 126 .
- Tolling , S. , Tornquist , R.M. , Jones , R.M. and Bliss , D.H. 1981 . Further studies on the anthelmintic effect of a sustained release pre-grazing treatment with morantel in grazing cattle in Sweden . Nord. Vet. Med. , 33 : 339 – 348 .
- Vlassoff , A. 1973 . Seasonal incidence of infective trichostrongvle larvae on pastures grazed by lambs . N.Z. J. exp. Agric. , 1 : 293 – 301 .