AGB-0020
QUESTION
Which type of mating should be preferred for the improvement of non-descript animals?
OPTIONS
(A) Inbreeding
(B) Line breeding
(C) Upgrading
(D) All of the above
ANSWER
(C) Upgrading
EXPLANATION
Upgrading is preferred for improving non-descript animals because repeated mating of local females with superior sires of an improved breed progressively increases the proportion of genes from the desired breed while retaining useful local adaptation. Inbreeding and line breeding increase relatedness and homozygosity rather than providing the standard method for upgrading non-descript stock.