Assessment of contraceptives as a potential chemosterilant for control of rat populations [electronic resource].

Includes reference.

Women contraceptive progestogen (Levonorgestrel) was evaluated as chemosterliant for laboratory & domestic collected female rats in 4 ascending doses as 5.40 ug/rat/day (10 times of rat contraceptive therapeutic doses), 10.8, 16.2 & 21.61lglratlday (as, 20, 30 and 40 time of the rat dose) respectively. These doses were administered for female rats via paraffin bait at a concentration of 154ug, 308ug, 462ug & 616ug Levonorgestrellkg paraffin block during one month. A direct relationship was recorded between the increase in the administered dose and the increase in mean body weight at the end of exposure period. No adverse effect could be recorded in the total or differential leucocytic count of treated groups in comparison with the control rats.

Summary in arabic.

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