University of Khartoum

Culling In Dairy Cattle Farms Of Khartoum, Sudan

Culling In Dairy Cattle Farms Of Khartoum, Sudan

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Title: Culling In Dairy Cattle Farms Of Khartoum, Sudan
Author: Karrar, Moatasim Hassan; Osman, Khadiga Mohammed; Sulieman, Manal Sulum
Abstract: The study aimed to determine the causes and rates of voluntary and involuntary culling in dairy cattle farms in relation to some management factors in five dairy cattle farms with an average farm size of 264.8±153.1 cow/farm in Khartoum State over one year. Monthly visits were performed to each farm to collect data either by reviewing the farm records or directly from animal owners or attendants. The overall culling rate was 15.0% (71.8% voluntary and 28.2% involuntary). The most common causes of voluntary culling were economic reasons (29.1%), low milk yield (23.0%) and aging (19.7%). The common causes of involuntary culling were infertility (17.7%), chronic mastitis (8.5%) and foot injuries (2.0%). In farms where the veterinary supervision was practiced, the overall culling rate (26.4%) was higher than the rate (11.3%) in farms which did not. The highest culling rate (41.9%) where the veterinary supervision was practiced was due to aging, whereas, where the veterinary supervision was not practiced, economic reasons (38.9%) were prevailing. In farms where houses were constructed from fixed materials with adequate shade, the overall culling rate was 13.6% and almost due to low milk yield (35.5%). However, in farms where houses were constructed from local materials the overall culling rate was 17.7% with prevalent culling rate due to economic reasons (53%). In farms where feed was provided from expert companies, the most culling cases were due to economic reasons (53%) whereas when using feed which was prepared within the farm, the most cause of culling was low milk yield (35.5%). it can be concluded that the voluntary culling was the most prevalent type of culling in dairy cattle farms and animals mostly culled for economic reasons.
URI: http://khartoumspace.uofk.edu/123456789/26274


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