Résumé

Neonatal calf diarrhoea is the most important disease of neonatal calves and results in the greatest economic losses due to disease in this age group in both dairy and beef calves the objectives of the present study ware to estimate the morbidity and the mortality of neonatal diarrhoea in dairy calves also to determine aetiology and risk factors were caused a diarrhoea in dairy veal under 60 days old. A total of 324 claves, housed in 30dairy breeding were followed during two velage season from January to Juan 2013. The total mortality was 5, 9% and was significantly higher in calves had less than 15 days of age. The incidence rate of diarrhoea was 31, 5% and peaked in the first two week after velage.
The main causes were breeding controls, defect of passive immunity, old of calf, production season, and nutrient of pregnant cattle, veal’s housing and infectious agents.
ELISA test on 22 fecal samples revealed that the 31, 82% of dairy breeding were infected, by cryptosporidium parvum in 13, 6% of study population, E. Coli F5 in 9% and Rotavirus with rate of 4, 5%.
Keywords: Neonatal, diarrhoea, mortality, incidence, risks factors

Information

Item Type:	Journal
Divisions:	» Institut des Sciences Agronomiques et Vétérinaires
ePrint ID:	1664
Date Deposited:	2019-02-27
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/fr/publication/article/1664

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