Orengo Juan, Madrid Josefa, Aragón Juan Luis, Martínez-Miró Silvia, López Miguel J, Hernández Fuensanta
Department of Animal Production, Faculty of Veterinary Science, Regional Campus of International Excellence "Mare Nostrum", University of Murcia, 30100 Murcia, Spain.
Mupesa Pecuaria, S.L., Polígono Ind. Las Salinas, Av. Europa, 29, Alhama de Murcia, 30849 Murcia, Spain.
Animals (Basel). 2021 Apr 26;11(5):1249. doi: 10.3390/ani11051249.
The aim of this study was to evaluate the effect of the inclusion of crude glycerin in post-weaning diets for piglets on growth performance and digestibility. The study was carried out with a total of 360 piglets over a 39 day period. Animals were blocked by body weight (7.7 ± 0.86 kg) and allotted randomly to one of three dietary treatments containing 0, 2.5 or 5% glycerin (G0, G2.5 and G5, respectively). Considering the whole period, glycerin did not affect the average daily gain. However, the average daily feed intake (ADFI) and the feed conversion ratio (FCR) tended to decrease or decreased linearly as the amount of glycerin increased, respectively ( = 0.060 and = 0.039). The apparent total tract digestibility (ATTD) of dry and organic matter (DM, OM) increased linearly with increasing glycerin in both periods ( ≤ 0.05). At the end of the study, there were no differences between treatments for any of the hormones measured. In conclusion, the FCR and digestibility of DM and OM were improved although the ADFI tended to be lower when glycerin was included at 5%. Consequently, crude glycerin could be used as an alternative ingredient to partially replace sweet whey and wheat in post-weaning diets.
本研究的目的是评估在仔猪断奶后日粮中添加粗甘油对生长性能和消化率的影响。本研究共对360头仔猪进行了为期39天的试验。动物按体重（7.7±0.86千克）进行分组，并随机分配到三种日粮处理之一，分别含有0%、2.5%或5%的甘油（分别为G0、G2.5和G5）。在整个试验期内，甘油对平均日增重没有影响。然而，随着甘油添加量的增加，平均日采食量（ADFI）和饲料转化率（FCR）分别呈线性下降趋势或下降（P = 0.060和P = 0.039）。在两个阶段，干物质和有机物（DM、OM）的表观全肠道消化率（ATTD）均随甘油添加量的增加而呈线性增加（P≤0.05）。在研究结束时，所测的任何一种激素在各处理间均无差异。总之，当甘油添加量为5%时，虽然ADFI有降低趋势，但FCR以及DM和OM的消化率得到了改善。因此，粗甘油可作为一种替代成分，部分替代断奶后日粮中的甜乳清和小麦。
