EFFECT OF STRATEGIC ANTHELMINTIC TREATMENTS ON GROWTH-PERFORMANCE ANDSURVIVAL RATE OF INDIGENOUS LAMBS IN SUBHUMID MALI

The study was carried out in the sub-humid environment of Mall from Ma y 1989 to April 1990. Djallonke female and male lambs (n = 552) were r andomly allocated at birth to three treatment groups: Fenbendazole (Pa nacur(R), Hoechst, Germany) at 10 mg/kg(-1) BW; Fenbendazole + Amproli um(R) (a coccidiostat) at 10 mg/kg(-1) BW; and control. Depending upon period of birth and season the two first groups were treated one to f our times. Daily weight gain of treated lambs was higher (P < 0.05) th an that of control lambs during the period from September to December corresponding to the end of the rainy season then slightly decreased t hereafter. This reduction in live weight gain was attributed to shorta ge and poor quality of fodder during the dry season. Treatment with Fe nbendazole alone or combined with Amprolium did not affect the rate of lamb mortality as equal number of deaths were observed in all groups.