Y. Dembarga

Gonadal and extragonadal sperm reserves in Boran and Boran x Friesian bulls raised on two planes of nutrition in the Highlands of Ethiopia.

A. Tegegne, T. Kassa, Y. Dembarga, 1992, Theriogenology.

Effect of plane of nutrition and season on body and testicular growth and on semen characteristics in Boran and Boran × Friesian bulls in Ethiopia

A. Tegegne, T. Kassa, R. Franceschini, 1994 .