Models based on weather for the development phases of the sheep tick, ixodes-ricinus l

Gardiner, W.P. and Gettinby, G. and Gray, J.S. (1981) Models based on weather for the development phases of the sheep tick, ixodes-ricinus l. Veterinary Parasitology, 9 (1). pp. 75-86. ISSN 0304-4017

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Abstract

The milk production of 6 cows infected with 15000 infective trichostrongylid larvae per week for 9 weeks in early lactation was compared with the milk production of 6 uninfected cows. After adjustment for differences in pre-infection milk production by covariance analysis, the infected cows produced 2.16 kg/day less milk than the uninfected cows.