Studies on the sexual behaviour of lactating sows and its relationship to breeding performance
Loebel, J.; Schlegel, W., 1972: Studies on the sexual behaviour of lactating sows and its relationship to breeding performance. Monatshefte fur Veterinarmedizin 27(8): 302-304
In 300 lactating sows, oestrus recurred within 10 days of parturition in 28% of animals and between the 11th day and the end of the 8-wk lactation in 7.67%.