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Oestrus synchronisation in weaned sows through self-feeding during the lactation period and by simultaneous weaning. 1. Interval from weaning up to first oestrus and number of synchronised sows



Oestrus synchronisation in weaned sows through self-feeding during the lactation period and by simultaneous weaning. 1. Interval from weaning up to first oestrus and number of synchronised sows



Japanese Journal of Swine Science 17(1): 16-23



In 2 phases of a synchronisation experiment, sows were fed ad lib. from 7 days post partum until weaning. In the 1st phase (July 1975-June 1976), 135 sows were weaned from 17 to 45 days post partum. Oestrus occurred in 90% of sows within 10 days of weaning, and in 94% within 12 days; for 94% of sows, the mean interval between weaning and oestrus was 5.54 plus or minus 1.53 days.

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