17	Effect of Vaccination against Enterotoxaemia of Pregnant Ewes on Antitoxin Alpha and Epsilon Antibodies in Colostrum, Milk and Lambs after Colostrum Intake N. Kirschvink, M. Socié-Jacob, B. Bolkaerts, L. Wiggers, J. Van de Ven Belgium

18	Quantification of Foot and Mouth Disease Virus Excretion and Transmission within Groups of Lambs with and without Vaccination K. Orsel, A. Dekker, A. Bouma, J. Stegeman, M. De Jong The Netherlands

19	Definition of Uncommon Fatal Toxoplasmosis in Newborn Lambs H. Atmaca, O. Kul, N. Ocal, C. Babur, N. Kabakci Turkey

21	The Role of Estradiol and Somatotropin in the Pathogenesis of Ovine Pregnancy Ketosis R. Everts, R. Jorritsma, M. Houweling, L. Van Leengoed, A. Tielens The Netherlands

22	Individual Animal Risk Factors for Ovine Clinical Mastitis S. Waage, S. Vatn Norway

23	Relationship between Bluetongue Virus Infection, Cyclicity and Individual Characteristics of Ewes before Autumnal Breeding in Texel Sheep Flocks in North of France C. Ponsart, N. Pozzi, D. Jeantils, J. M. Camus, M. C. Deloche, S. Bareille, A. Bensmaili, P. Humblot, B. Guerin France