Stamilla Alessandro, Messina Antonino, Sallemi Sabrina, Condorelli Lucia, Antoci Francesco, Puleio Roberto, Loria Guido Ruggero, Cascone Giuseppe, Lanza Massimiliano
Dipartimento di Agricoltura, Alimentazione e Ambiente (Di3A), University of Catania, Via Valdisavoia, 5, 95123 Catania, Italy.
DVM consultant poultry specialists, via Cava Gucciardo Pirato, 12, 97015 Modica, Italy.
Animals (Basel). 2020 Mar 6;10(3):442. doi: 10.3390/ani10030442.
The goal of the trial was testing the effects of a blend of organic acids and essential oils dietary supplementation on growth performance and gut healthiness in broiler chickens. In total, 420 male Ross 308 chicks (1-day old) were randomly assigned to two dietary treatments: basal (BD) and organic acids and essential oils (OA&EO) diets (three replicates/treatment; 70 broilers/replicate). BD group received commercial diets whereas OA&EO group basal diets + 5 g/kg of microencapsulated organic acids and essential oils. OA&EO treatment improved the average daily gain ( < 0.01) and feed conversion ratio at 37-47 days compared to BD treatment. OA&EO treatment improved gut morphology mostly at ileum and duodenum levels in terms of villi height, crypt depth, number of villi, mucosa thickness and villi area at 24 and 34 sampling days. A certain selective action against in ileum of OA&EO group was shown at 33 ( = 0.053) and 46 days ( = 0.09) together with lower median values for , , and at ceca level. Overall, organic acids and essential oils supplementation improved growth performance in the final growth stage and some morphological gut traits and reduced to a certain extent count in ileum.
该试验的目的是测试日粮中添加有机酸和精油混合物对肉鸡生长性能和肠道健康的影响。总共420只1日龄雄性罗斯308雏鸡被随机分配到两种日粮处理组：基础日粮组（BD）和有机酸与精油日粮组（OA&EO）（每组3个重复；每个重复70只肉鸡）。BD组饲喂商业日粮，而OA&EO组饲喂基础日粮+5 g/kg微囊化有机酸和精油。与BD处理相比，OA&EO处理在37至47日龄时提高了平均日增重（P<0.01）和饲料转化率。在24和34个采样日，OA&EO处理在回肠和十二指肠水平上，在绒毛高度、隐窝深度、绒毛数量、黏膜厚度和绒毛面积方面，大多改善了肠道形态。OA&EO组在33日龄（P = 0.053）和46日龄（P = 0.09）时，对回肠中的某种细菌显示出一定的选择性作用，同时盲肠水平上的大肠杆菌、沙门氏菌、产气荚膜梭菌和弯曲杆菌的中位数较低。总体而言，添加有机酸和精油改善了肉鸡后期生长阶段的生长性能和一些肠道形态特征，并在一定程度上减少了回肠中的细菌数量。
