Blavi L, Solà-Oriol D, Mallo J J, Pérez J F
J Anim Sci. 2016 Dec;94(12):5262-5271. doi: 10.2527/jas.2016-0760.
The early exposure of the fetus to certain volatiles may result in a further preference for these compounds later in life and could positively affect the acceptance of feed containing a similar flavor and the zootechnical responses. The study consisted of 2 trials to determine if including Fluidarom 1003 (a commercially flavored feed additive containing >25% anethol and cinnamaldehyde and >10% eugenol; Norel S.A., Madrid, Spain, Spain) in sow and postweaning piglet diets 1) provokes the presence or absence of 3 major volatile compounds (anethol, cinnamaldehyde, and eugenol) in amniotic fluid and milk, affecting piglet performance (BW, ADG, ADFI, and feed conversion ratio) after weaning, and 2) modifies creep feed consumption and feed preference in a 2-choice test. The major compounds, anethol, cinnamaldehyde, and eugenol, were detected in amniotic fluid; however, only traces were observed in milk. The inclusion of flavor in the sow diets improved piglet consumption and growth after weaning ( = 0.001). Furthermore, the positive reward associated with the flavor included in the sow diet was stronger when piglets were offered a nonflavored creep feed ( < 0.05). Therefore, early exposure of pigs' fetuses to maternal dietary clues at the end of gestation might allow for conditioning pigs after weaning.
胎儿早期接触某些挥发性物质可能会导致其在日后生活中对这些化合物产生进一步的偏好，并可能对含有类似风味的饲料的接受度以及畜牧学反应产生积极影响。该研究包括2项试验，以确定在母猪和断奶后仔猪日粮中添加Fluidarom 1003（一种商业风味饲料添加剂，含有>25%的茴香脑和肉桂醛以及>10%的丁香酚；西班牙马德里的诺雷尔公司）是否会：1）导致羊水和乳汁中出现或不出现3种主要挥发性化合物（茴香脑、肉桂醛和丁香酚），从而影响断奶后仔猪的性能（体重、平均日增重、平均日采食量和饲料转化率）；2）在双选试验中改变仔猪的开食料采食量和饲料偏好。在羊水中检测到了主要化合物茴香脑、肉桂醛和丁香酚；然而，在乳汁中仅观察到微量。在母猪日粮中添加风味剂可提高断奶后仔猪的采食量和生长速度（P = 0.001）。此外，当给仔猪提供无风味的开食料时，与母猪日粮中所含风味相关的积极奖励更强（P < 0.05）。因此，在妊娠末期让仔猪早期接触母体日粮线索可能会使仔猪在断奶后形成条件反射。
