9 (AB) crossfostering
(n) Season of Parity (P) birth (SB) Summer Autumn Nulliparous Observations (n) 29 14 42 Fertility rate (%) -- -- -- Average liveweight 4,208 4,214 4,122 (b) at delivery (g) Interval between 61.
Penn D, Potts W: MHC-disassortative mating preferences reversed by crossfostering
The effect could be reversed with crossfostering
, showing it to be a consequence of maternal behavior rather than gestation or genetic inheritance.
To remove this, we used a crossfostering
Lee Johnston, swine scientist with the University of Minnesota Extension Service, says you need to plan carefully to make crossfostering successful.
For crossfostering to be successful, SOWS must farrow within 24 hours of each other.