Q17 of 805 Page 1

(a) What is inbreeding depression ?

(b) Explain the importance of “selection” during inbreeding in cattle.


(a): Inbreeding- is the crossing of closely related animals within the same breed for 4-6 generations.

The continued inbreeding however, reduces fertility and even the productivity, this is called Inbreeding depression.


(b): The importance of “Selection” during inbreeding of cattle are as follows:


I. BY selection at every step, productivity of inbreed population is increased.


II. It helps in eliminating the harmful recessive genes.


III. It helps in the accumulation of the desired superior genes, so as to obtain more milk per lactation.


IV. It helps in eliminating the less desirable genes from cattle population.


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