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Factors affecting the reproductive performance of Awassi sheep flocks in north-east of Jordan: An epidemiological study |
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| Authors: | S. Q. Lafi A. Q. Talafha N. Giadinis E. Kalaitzakis K. Pourliotis N. Panousis |
| Affiliation: | 1. Department of Pathology and Animal Health, Faculty of Veterinary Medicine, Jordan University of Science and Technology, P.O. Box 3030, Irbid, Jordan 2. Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, Jordan University of Science and Technology, P.O. Box 3030, Irbid, Jordan 3. Clinic of Farm Animals, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece |
| Abstract: | A prospective cohort study was conducted using 32 randomly selected Awassi sheep flocks to identify factors hypothesized to be associated with the occurrence of pregnancy, twinning and fetal loss between August 2005 and May 2006 in the region of Al-Safawi (northeast of Jordan). Vitamins A and E and selenium concentrations were determined on 448 blood samples. Using the forward selection procedure of the logistic regression module, models with statistically significant risk factors (P? |
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