Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
Department of Microbiology, Faculty of Veterinary Medicine, Matrouh University, Matrouh, Egypt.
Poult Sci. 2021 Dec;100(12):101493. doi: 10.1016/j.psj.2021.101493. Epub 2021 Sep 17.
To investigate the effects of dietary fumaric acid (FUA) on performance, carcasses, nutrient digestibility, blood metabolites, digestive enzymes, and cecal microbiota in Japanese quail chicks. Three hundred unsexed Japanese quail (1-wk-old) were randomly assigned to 5 groups. Supplementation of FUA in the diet of Japanese quail chicks exhibited a significant improvement in growth performance through the different experimental periods studied compared with those receiving unsupplemented one. The digestibility of crude protein (CP) and metabolizable energy (ME) were improved with 10 and 15 g/kg FUA, respectively. Apart from lipase enzyme, birds fed 5 and 15 g/kg FUA recorded higher activity of amylase. There were no significant changes among experimental groups on the relative weights of carcass, gizzard, heart, and dressing. Dietary supplementation of FUA at different levels (P> 0.05) increased total protein (TP) and globulin (GLB) concentrations and A/G % compared with control group. A significant (P < 0.01) decrease in plasma low density lipoprotein (LDL) and total cholesterol (TC) levels and increase in high density lipoprotein (HDL) concentrations were observed in chicks fed with FUA containing diets. Immunoglobulin G (IgG) (P = 0.0026) and M (IgM) (P = 0.0007) levels were greater in groups treated with either 10 or 15 g FUA/kg diet. A significant increase in plasma Ca concentration was noticed in chicks received 15 g FUA/ kg compared with the other groups. Quail chicks received diets containing FUA at different levels exhibited reduced cecal count of coliform, E. coli, and Salmonella as compared with control group. In conclusion, supplementation of fumaric acid (especially 15 g/kg diet) in quail chick diets improved their growth, digestibility of nutrients, immune response, antioxidant status, digestive enzyme, and intestinal health.
为了研究膳食富马酸（FUA）对肉仔鸡生长性能、胴体、养分消化率、血液代谢物、消化酶和盲肠微生物区系的影响。将 300 只雌雄不分的日本鹌鹑（1 周龄）随机分为 5 组。与未添加 FUA 的日粮相比，日粮中添加 FUA 可显著提高不同试验期日本鹌鹑的生长性能。添加 10 和 15 g/kg FUA 可分别提高粗蛋白（CP）和代谢能（ME）的消化率。除脂肪酶外，饲喂 5 和 15 g/kg FUA 的鸟类记录的淀粉酶活性更高。各组间的相对胴体、肌胃、心脏和屠宰重量无显著变化。日粮中添加不同水平的 FUA（P>0.05）可提高总蛋白（TP）和球蛋白（GLB）浓度以及 A/G%，与对照组相比。添加 FUA 可显著降低（P<0.01）血浆中低密度脂蛋白（LDL）和总胆固醇（TC）水平，增加高密度脂蛋白（HDL）浓度。添加 FUA 日粮处理组的免疫球蛋白 G（IgG）（P=0.0026）和 M（IgM）（P=0.0007）水平更高。与其他组相比，15 g FUA/kg 日粮组的血浆 Ca 浓度显著增加。与对照组相比，日粮中添加不同水平的 FUA 可显著降低盲肠大肠菌群、大肠杆菌和沙门氏菌的数量。总之，日粮中添加富马酸（特别是 15 g/kg 日粮）可提高肉仔鸡的生长性能、养分消化率、免疫反应、抗氧化状态、消化酶和肠道健康。
