Abstract
This study was conducted to determine the effect of season on three main
parameters of sexual activity in Rembi rams in Algeria during 12 months
period. The experiment involved a monthly measurement of plasma
testosterone (T) level, scrotal circumference (S.C) and body weight
(B.W) in ten adult rams, aged between 2 and 6 years and raised under
semi-extensive system, in permanent contact with the ewes. The data
collected showed a significant effect of season on the parameters
studied. The seasonal variations have showed higher values during
spring and autumn with a maximum in April for the testosterone levels
(3,45±0,14 ng/ml), in November for the scrotal circumference (34,7±2,00
cm) and the body weight (82,3±1,28 Kg). The lower values were recorded
during periods of very high temperatures in summer, during food
restriction periods and poor grazing in winter, with an annual minimum
in June for the testosterone levels with 0,47±0,02 ng/ml and in July for
the scrotal circumference (31,58 cm) and the body weight 80,93±1,20 Kg.
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