S. H. A. SID AHMED, T. E. ALI*, L. R. SCHAEFFER**

Atbara Animal Production Research Station, P .0 .Box 165, Atbara,
Sudan.

SUMMARY

A total of 938 Butana calves born during the years 1979 to 1989 at

Atbara Research Station were used to study the effect of year, season and

sex of calf on incidences of calf mortality. Weighted least square methodology was used to analyse these data. The overall average of calf mortality was 33% indicating poor level of management year-season-sex of calf interaction was highly significant (p < 0.005). Future research should investi­gate the influence of sire of calf and age of dam on the incidence of calf mortality.

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