Genetic components of litter size variability in sheep.
Genetics, selection, evolution : GSE, no. 3 (2001): 249-271
Classical selection for increasing prolificacy in sheep leads to a concomitant increase in its variability, even though the objective of the breeder is to maximise the frequency of an intermediate litter size rather than the frequency of high litter sizes. For instance, in the Lacaune sheep breed raised in semi-intensive conditions, ewes ...更多
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