H Köther

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i days and number of mice littering of the g6 exposed per generation increased significantly (p < o.oi), while number of days from exposure to male to littering decreased (p < o.oi). Litter size at subsequent parities and total number of litters in a 30 8 days production period of mice of the 25 th generation of a line selected for litter size (L line) and(More)
index using the part yields (instead of the 305 day yield) can lead to a substantial increase in selection gain. The statistical problems of cow evaluation are discussed from the point of view of cow selection for breeding bulls. There we have the problem that the average genetic values of the bulls used, and the applied selection intensities on the female(More)
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