This is because of a better reproductive ability, being more robust, and better adapted to local conditions such as heat tolerance and a greater resistance to diseases.
Seno ke ka ntlha ya bokgoni jwa tsadiso, di boitshoko go feta, mme di tlwaela maemo a selegae botoka a a jaaka go itshokelqla mogote le kganano e kgolo ya malwetse.