Galassi Gianluca, Battelli Marco, Verdile Nicole, Rapetti Luca, Zanchi Raffaella, Arcuri Sharon, Petrera Francesca, Abeni Fabio, Crovetto Gianni Matteo
Dipartimento di Scienze Agrarie e Ambientali-Produzione, Territorio, Agroenergia, Università degli Studi di Milano, Via Celoria 2, 20133 Milano, Italy.
Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente, Università degli Studi di Milano, Via Celoria 2, 20133 Milano, Italy.
Animals (Basel). 2021 Nov 12;11(11):3241. doi: 10.3390/ani11113241.
The weaning period is a stressful period for the gastrointestinal tract (GIT) of piglets. This work aims to evaluate the effects of the commercial polyphenol-based product GreenFIS on: (1) GIT health and performance of 60 weaned piglets; (2) digestibility in 18 growing pigs. Three diets were tested: a control diet (C), C plus 2.5 g of GreenFIS/kg C (T1), and C plus 5 g of GreenFIS/kg C (T2). After the post-weaning trial three piglets per treatment were sacrificed for the GIT histological analysis. No differences between diets were recorded in terms of growing performance or clinical and biochemical blood parameters. The GIT histological analysis did not show any indicators of inflammation for any of the groups. The feces of the two extreme treatments (C and T2) were analyzed for microbiota, revealing a greater presence of the group, positively associated with starch degradation, in T2. In the second experiment six pigs per treatment were randomly chosen for the digestibility study. The inclusion of GreenFIS at both levels led to a higher fecal digestibility of gross energy (86.2%, 89.1%, and 89.5%, for C, T1, and T2, respectively) and crude protein (87.0%, 90.2%, and 90.0%). In conclusion, the additive did not improve, in the excellent experimental hygienic conditions, the gut health, but it did increase nutrient digestibility.
断奶期对仔猪的胃肠道（GIT）来说是一个压力时期。本研究旨在评估基于商业多酚的产品GreenFIS对以下方面的影响：（1）60头断奶仔猪的胃肠道健康和性能；（2）18头生长猪的消化率。测试了三种日粮：对照日粮（C）、C+2.5 g GreenFIS/kg C（T1）和C+5 g GreenFIS/kg C（T2）。断奶后试验结束后，每种处理处死3头仔猪进行胃肠道组织学分析。在生长性能、临床和生化血液参数方面，日粮之间未记录到差异。胃肠道组织学分析未显示任何组有炎症指标。对两种极端处理（C和T2）的粪便进行微生物群分析，结果显示T2中与淀粉降解呈正相关的菌群含量更高。在第二个实验中，每种处理随机选择6头猪进行消化率研究。添加两个水平的GreenFIS均导致粪便总能消化率更高（C、T1和T2分别为86.2%、89.1%和89.5%）以及粗蛋白消化率更高（87.0%、90.2%和90.0%）。总之，在良好的实验卫生条件下，该添加剂并未改善肠道健康，但确实提高了养分消化率。
