Animal genetic resources. Strategies for improved use and ...
2021-2-17u2002·u20021 Requires at least 10 additional years to regenerate the breed.. 2 Requires about one generation (3 yrs in cattle) to regenerate the breed. 3 Brem et al., (1984). 4 Smith (1984). 5 1 £ = 3.6 DM. m = males, f = females, d = doses, e = embryos. The returns from breed maintenance are still more difficult to estimate than the costs, because of the difficulties in predicting the future.
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