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Experiments on the Control of Parasitic Gastroenteritis in Calves

  • J. F. Michel (a1) and M. B. Lancaster (a1)

Extract

In three successive years trials were made of measures for the control of parasitic gastro-enteritis in calves, based on the knowledge that the second generation of the worms is the cause of disease and that it becomes available on the herbage in July. A comparison was made between calves which remained on the same pasture throughout the season, calves which were moved in the middle of July to pasture which had not been contaminated since the previous autumn and calves which were given a dose of anthelmintic when moved to such clean pasture. A fourth group consisted of calves which received anthelmintic treatment every week while remaining on infected ground.

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Anderson, N., Armour, J., Jarrett, W. F. H., Jennings, F. W., Ritchie, J. D. and Urquhart, G. M., 1905b.— “A field study of parasitic gastritis in cattle”. Vet. Rec. 77, 11901204.
Keith, R. K., 1953.— “The differentiation of the infective larvae of some common nematode parasites of cattle”. Aust. J. Zool., 1, 223235.
Michel, J. F., 1967a.— “The epidemiology and control of parasitic gastroenteritis in calves”. Proc. 4th International Meeting World Ass.Buiairics, 272287.
Michel, J. F., 1967b.— “Regulation of egg output of populations of Ostertagia osiertagi”. Nature, Lond., 215, 10011002.
Michel, J. F., 1968.— “The control of stomach-worm infection in young cattle”. J. Brit.Grassl. Soc., 23, 165173.
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Michel, J. F., 1969c.— “Observations on the faecal egg counts of calves naturally infected with Ostertagia ostertagi”. Parasitology, 59, 829835.
Michel, J. F., Lancaster, M. B. and Hong, C., 1970.— “A field study of the epidemiology of parasitic gastro-enteritis in calves”. Res. vet. Sci., 11, 255259.
Michel, J. F., AND Sinclair, I. J., 1970.— “The effect of cortisone on the worm burdens of calves infected daily with Ostertagia ostertagi”. Parasitology, 59, 691708.
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Rohrbacher, G. H., 1957.— “The recovery of nematode larvae by Baermann apparatus as affected by a detergent”. Proc. helm. Soc. Wash., 24, 24–25.
Taylor, E. L., 1939.— “Technique for the estimation of pasture infestation by strongyloid larvae”. Parasitology, 31, 473478.

Experiments on the Control of Parasitic Gastroenteritis in Calves

  • J. F. Michel (a1) and M. B. Lancaster (a1)

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