Gestation length and birth weight of Kenana cattle under village conditions in the Gezira State

Abstract

198 Kenana calves (114 males and 84 females) in Barakat area of the Gezira Scheme 
were involved in this study during (1990/1992). an overall mean calf birth weight of 
24.60±0.30kg during 283.72±0.21 days of gestation. 
Sex of calf highly affected both gestation length and calf birth weight (P<0.001) 
male calves gestated 2-days longer and about 1kg heavier at birth than females. 
A significant season influences on gestation length and calf birth weight the longest 
gestation (P<0.001) and heaviest weight (P<0.05) by the wet summer calvers in 
contrast to the shortest length of gestation and lightest weight attained by the dry 
summer ones. 
Sex of calf and calving season of this study affects both gestation length and calf 
birth weight, male calves and wet summer longer and have heaviest weight