. Veterinary studies for agricultural students. Veterinary medicine. 138 COMMON DISEASES. Summary. —We may summarize the symptoms as follows: In acute cases the disease appears suddenly ; the case develops very rapidly and terminates fatally. The antemortem symptoms are very unsatisfactory from a diagnostic standpoint. The post mortem symptoms are definite and as a rule easily recognized and consist of more or less extensive haemorrhages which are sharply defined when they appear upon the surfaces of the vicera and serous membranes. MENINGEAL TYPE. History.—Cows which have given a normal flow
. Veterinary studies for agricultural students. Veterinary medicine. 138 COMMON DISEASES. Summary. —We may summarize the symptoms as follows: In acute cases the disease appears suddenly ; the case develops very rapidly and terminates fatally. The antemortem symptoms are very unsatisfactory from a diagnostic standpoint. The post mortem symptoms are definite and as a rule easily recognized and consist of more or less extensive haemorrhages which are sharply defined when they appear upon the surfaces of the vicera and serous membranes. MENINGEAL TYPE. History.—Cows which have given a normal flow of milk in the morning may give prac- tically none in the evening. Otherwise they are apparently normal. They may be noticed to be slightly ailing the next morning but showing little aside from dullness. There may be no rise of temperature ; no evidence of pain or discom- fort. When they attempt to walk, the gait is more or less irregular, resembling very much the gait of milk fever in its early stage. This is of course more marked in some FIG- 53- haemorrhagic sep- ticaemia. (.If. H. It.) than in Others. Haemorrhages on endocardium (internal lining of the heart). Symptoms. —The symptoms* during the first 24 to 36 hours are not marked except as to continued dullness, staggering gait and cold extremities. The skin is harsh and lacking in sensation. This loss of skin sensation begins at the posterior extremities and gradually extends forward. The milk flow is checked. After 24 to 36 hours, diarrhea appears, the discharges being dark and thin with very disagreeable odor. Nervous symptoms gradually develop and are quite uniform. The symptoms during this second period are those which be-. *In case of young calves, the cases may he characterized by profound nervous disturbance very early in their histories. Digitized by Microsoft®. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appeara
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