Thirty-five complete oestrous cycles were studied in five nonpregnant camels (Camelus dromedarius) over a period of 15 months. The oestrous cycle did not have a luteal phase. During the cycle of 28 days the ovarian activity was strictly follicular. Follicles matured in six days, maintained their size for 13 days and regressed in eight days. Ovulation was non-spontaneous and required the stimulus of coitus. Manual stimulation of the cervix for 15 minutes did not induce ovulation. The external manifestations of the oestrous cycle as well as the changes in the ovaries and the genital tract were also studied.
The clinical features of pregnancy for each month of gestation were studied and the findings recorded in respect of six pregnant camels which were subjected to rectal and vaginal examinations at weekly intervals over a period of 13 months. A comparison of the findings was made with those previously recorded for the cow.
Summary
In a serological survey of 102 Sudanese female camels, 81.1 per cent were seropositive to bovine parainfluenza‐3 virus (PIV 3) and 15.7 per cent to bovine viral diarrhoea virus (BVDV). No camels showed any serum neutralizing antibodies to infectious bovine rhino‐tracheitis virus (IBRV), 5.9 per cent were positive to Brucella abortus by agglutination and complement fixation tests, and 22.5 per cent showed antibodies to Toxoplasma gondii.
Zusammenfassung
Das Vorkommen von Antikörpern gegen einige Viren, gegen Brucella abortus und Toxoplasma gondii im Serum von Kamelen (Camelus dromedarius) in Sudan
Bei serologischen Untersuchungen von 102 weiblichen, sudanesischen Kamelen reagierten 81,1% der Tiere gegenüber bovinem Parainfluenza‐3‐Virus (PIV3) und 15,7% gegenüber bovinem Virusdiarrhoe‐Virus (BVDV) positiv. Neutralisierende Antikörper gegen infektiöses, bovines Rhinotracheitis‐Virus (IBRV) konnte in keinem Serum gefunden werden. 5,9% der Tiere zeigten in der Agglutinations‐ und der Komplementbindungsreaktion einen Titer gegenüber Brucella abortus. Antikörper gegen Toxoplasma gondii wurden in 22,5% der Seren gefunden.
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