Tropicultura (Jan 2014)
Induction d'oestrus et insemination artificielle chez les zebus Azawak et zebus Goudali au Burkina Faso
Abstract
Estrus Induction and Artificial Insemination of Zebu Azawak and Zebu Goudali Cattle in Burkina Faso. The efficiency of estrus induction treatment and fertility after artificial insemination were monitored with 88 zebu Azawak and 82 zebu Goudali treated with crestar® implant for a period of 10 days. The tests were carried out in the dry season (naz=42, ngoud=40) and in the rainy season (naz=46, ngoud=42) in semi-intensive farms around Ouagadougou (Burkina Faso). Treatment was completed by two injections of prostaglandin F2α (500 micrograms) and PMSG (400 IU), respectively 8th and 10th days of implant installation. Two artificial inseminations were performed at 48 hours and 72 hours after stopping treatment. The average rate of estrus induction in zebu Azawak and zebu Goudali were respectively 90.9% and 95.1%. The means time from onset of oestrus was 35.9±3.9 and 30.4±4.8 hours respectively for zebu Azawak and zebu Goudali. The average durations of oestrus were 11.3±1.4 hours in the Azawak and 12.1±2.4 hours in Goudali. The average gestation was 21.6% in zebu Azawak against 42.7% in zebu Goudali. The timing of inseminations should be reviewed especially in zebu Azawak.
