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... ample, if you want to breed a suitable hog, then it takes only several generations to introduce crossbreeding, and then batch breeding experiments are conducted in different groups.
It usually takes more than 2 years for one generation of pig breeds. It is not unusual for the fifth or sixth generation to have no results.
That is, agriculture can carry out multiple projects at the same time, otherwise a person's life will be over after a brush.
But today, Chen Sen is very anx ...
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