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Studies on the survival of eggs and infective larvae of Ostertagia ostertagi and Cooperia oncophora in liquid cattle manure

, : Studies on the survival of eggs and infective larvae of Ostertagia ostertagi and Cooperia oncophora in liquid cattle manure. Zentralblatt fur Veterinarmedizin 21B(Heft 5): 311-317

In the laboratory tests, all eggs and infective larvae were killed after 28 days at +20 deg C and after 172 and 160 days, respectively, at +3 deg C. In an experimental tank with liquid cattle manure under Swedish conditions eggs and infective larvae were destroyed after 11-44 days in the summer (May-August), but some of them survived for 3-5 months in the autumn and winter. No significant difference in the survival time was noted between eggs and infective larvae. The mean monthly temperature in the tank varied between -1.8 deg C and +22.7 deg C in the surface layer and between +1.8 deg C and +16.8 deg C at the bottom of the tank. To avoid spread of infection with trichostrongyle nematodes from liquid manure, it is recommended that after the last filling of the tank with egg-containing faeces, liquid cattle manure should be stored in the autumn and winter for 4-5 months and in the summer for 1-2 months before the manure is used on pastures where young cattle are going to graze.


PMID: 4858506

DOI: 10.1111/j.1439-0450.1974.tb00505.x

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