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volume 29 issue 1 (march 2008) : 68 - 73
REPRODUCTIVE AND PRODUCTIVE PERFORMANCE OF HOLSTEIN-FRIESIAN CATTLE UNDER TROPICAL CONDITIONS WITH SPECIAL REFERENCE TO SUDAN- A REVIEW
1Al zaeim Al azhari University-Khartoum North, 13311-Sudan
ABSTRACT
The reproductive and productive performance of exotic breeds in tropical countries is different
from what they usually achieve in their original home-land. This is due to the harsh environmental
conditions and different climatic conditions beside the rather poor managemental systems. The
Holstein-Friesian (HF) cattle can be bred and maintained in tropical environments, although
performing less well than Friesians maintained in temperate climates. The observed performance of Holstein-Friesian (HF) under Sudan conditions is commendable. The means for age at first calving,calving interval, service period, number of services per conception, lactation milk yield, daily m ilk yield, lactation length and dry period are 29.8 months, 433.1 days, 167.8 days, 2.3, 4605.5 litres, 15.1 litres, 322.1 days and 90.0 days, respectively.
from what they usually achieve in their original home-land. This is due to the harsh environmental
conditions and different climatic conditions beside the rather poor managemental systems. The
Holstein-Friesian (HF) cattle can be bred and maintained in tropical environments, although
performing less well than Friesians maintained in temperate climates. The observed performance of Holstein-Friesian (HF) under Sudan conditions is commendable. The means for age at first calving,calving interval, service period, number of services per conception, lactation milk yield, daily m ilk yield, lactation length and dry period are 29.8 months, 433.1 days, 167.8 days, 2.3, 4605.5 litres, 15.1 litres, 322.1 days and 90.0 days, respectively.
KEYWORDS
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In this Article
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Published In
Agricultural Reviews