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EMMANUEL, B., Howano, B. R. eNo Eueov, M. 1976. Urea degradation in the camel. Can. J. Anim. .Following a single injection of rnC-urea, the kinetics of urea metabolism have been studied in two female Arabian camels (Camelus dromedarizs) fed roughage diets containing 6.1 (diet A), 9.6 (diet B), and 13.6vc (diet C) crude protein. In general, plasma urea concentration, urea pool size, urea entry rate and urinary urea excretion rate increased as the dietary nitrogen intake increased. The mean extents of urea degradation were approximateiy 86, 7 4 and 47 %' for diets A, B , and C , respectively, as calculated from the ratio of urea degradation rate to urea entry rate, or from the fraction of rt-urea recovered in the urine. The following parameters were linearly related: urea entry rate and urea pool size, urea pool size and plasma urea concentration, percentage urea degraded and urea entry rate, and percentage urea degraded and crude protein intake.Les auteurs ont observ6, aprds injection simple d'urde marqude au raC, la cin6tique du m6tabolisme de I'ur6e chez deux dromadaires femelles (Camelus dromedarius) recevant des rations de fourrage grossier contenant, dans l'ordre, 6.

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Over a period of 12 months, 1006 ovine and 1129 caprine genitalia were collected from an abattoir. 57-5 per cent of the sheep and 89 per cent of the goat specimens were gravid of which 26-9 per cent and 30-2 per cent, respectively, of the total were estimated to be over two months of gestational age. Transuterine migration of the early embryo was a feature in both species although it was more frequent in the goat. Signs of fertilisation failure or embryonic death was most frequently observed if associated with multiple ovulations. Three ovine and two caprine fetuses had severe developmental abnormalities, and a total of 30 specimens had either congenital or acquired abnormalities of the ovaries and uterus.