(Fertilium; JBS United, Inc., Sheridan, IN, USA) in the diet of sows for 5 d prior to farrowing, during a 21-d lactation, and prior to mating post-weaning (approximately 35 d of Fertilium). Moreover, the dietary addition of omega-3 fatty acids, in the form of menhaden oil, increased early embryonic survival in gilts [10]. In contrast, Estienne et al. [11] fed Fertilium to highly fertile gilts and reported no effects on ovulation rate, pregnancy rate, or litter size at d 27 postmating.