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Featured researches published by R. Hajer.


Veterinary Quarterly | 1994

IN VITRO TRANSPORT OF CARBON IN THE TRACHEA OF VEAL CALVES

Th. S. G. A. M. van den Ingh; R. Hajer; G.H. Wentink

Carbon transport was studied in vitro in preparations of trachea and bronchus from veal calves. The mean velocity varied from 4.2 mm/min in the main bronchi to 6.3 mm/min in the ventral trachea. In some locations no transport was observed. Stereomicroscopic evaluation of Alcian blue-phloxine stained mucosal surfaces revealed differences in the appearance of the mucus layer between locations with and without mucus transport. It is concluded that quality and integrity of the mucus layer play an important role in mucus transport.


American Journal of Veterinary Research | 1984

Effect of somatic growth on pulmonary function values in healthy Friesian cattle

Pierre Lekeux; R. Hajer; H. J. Breukink


American Journal of Veterinary Research | 1984

Pulmonary function testing in calves : technical data

Pierre Lekeux; R. Hajer; H. J. Breukink


Research in Veterinary Science | 1985

Upper airway resistance in healthy Friesian cattle

Pierre Lekeux; R. Hajer; H. J. Breukink


Research in Veterinary Science | 1985

Respiratory syncytial virus pneumonia in Friesian calves: physiological findings.

Pierre Lekeux; J. Verhoeff; R. Hajer; H. J. Breukink


Veterinary Record | 1985

Onion poisoning of young cattle

J Verhoeff; R. Hajer; T.S.G.A.M. van den Ingh


Canadian journal of comparative medicine | 1984

Intrathoracic pressure measurement in cattle: standardized procedure.

Pierre Lekeux; R. Hajer; H. J. Breukink


Canadian journal of comparative medicine | 1985

Physiological effects of experimental verminous bronchitis in Friesian calves

Pierre Lekeux; R. Hajer; J. H. Boon; M. W. Verstegen; H. J. Breukink


American Journal of Veterinary Research | 1985

Longitudinal study of the effects of lungworm infection on bovine pulmonary function

Pierre Lekeux; R. Hajer; H. J. Breukink


American Journal of Veterinary Research | 1985

Pathophysiologic study of 3-methylindole-induced pulmonary toxicosis in immature cattle

Pierre Lekeux; R. Hajer; Tsgam van den Ingh; H. J. Breukink

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