Perhaps the greatest single factor influencing cattle production is reproductive rate." (M.B. Willis, Beef Cattle Production in Developing Countries - 1974)
There are good reasons for the Boran being the breed of choice for the cow-component in two-way crossbreeding systems. Kenyan commercial ranchers have long recognised the Boran cow's prolific qualities and small size compared with other Zebu and composite breeds.
Furthermore, by crossing with an appropriate Bos taurus sire, any desirable beef or dairy F1 combination can be custom-made. The genetic completeness of the Boran cow simplifies herd structure; making complicated three-way, terminal or rotational systems unnecessary. The two-way cross is flexible in the face of market demands - the type of sire can be changed according to the product needed.
CARTWRIGHT (Journal of Animal Science, 30, p 706 - 711, 1970) summarizes all traits in beef cattle breeding in the table below: -
0 Neutral or not of great
TRAITS CLASSIFIED ACCORDING TO IMPORTANCE IN COWS, BULLS AND STEERS