Abstract
The mortality and morbidity of young production animals causes serious economic losses. This concerns both the developing countries as well as countries leading in modern animal production. The early postnatal period and weaning period are the most risky phases during the entire production process.
Highlights
The mortality of young animals has an important effect on farm economy
By using the above mentioned mortality rate of 10%, the overall loss is estimeted as 265 millions US $
This cost of 200 US $ represent the equivalent of the revenue of 600L of milk, and near 10% of the annual production of a good dairy cow. This quantity of milk is important and could only compensate the loss of a calf at the expense of considerable effort and not-negligible supplementary costs. This comparison is not necessary because beef cow production is judged by the number of calves produced
Summary
The mortality of young animals has an important effect on farm economy. Dardillat and Vallet (1984) have estimated the mortality of calves in France at about 10% during the first month post-partum. In France, about 4 millions dairy calves and 3.7 millions beef calves are born each year.
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