Effect of year,-season and sex of calf on pre-weaning calf mortality in Butana dairy cattle

Abstract

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 methodol-  
ogy was used to analyse these data. The overall average of calf mortality  
was 33% indicating poor level of management year-season-sex of calf in- 
teraction was highly significant (p < 0.005). Future research should investi
gate the influence of sire of calf and age of dam on the incidence of calf 
mortality.