畜牧与兽医2025，Vol.57Issue(8)：7-12,6.
牛至精油与益生菌联用对黄羽肉鸡生长性能、营养物质表观消化率和抗氧化功能的影响
Effects of oregano essential oil and probiotics on growth performance,nutrient apparent digestibility and antioxidant function of yellow-feathered broilers
摘要
Abstract
The aim of this experiment was to study the effects of oregano essential oil in combination with probiotics on growth performance,apparent digestibility of nutrients and antioxidant function of yellow-feathered broilers.Four hundred and twenty 1-day-old chicks were col-lected and equally distributed into 7 groups,with 6 replicates in each group and 10 chickens in each replicate.The control group of yellow-feathered broilers was fed with a basic diet,while the six experimental groups were subjected to a 2×3 two-factor randomized design,the testⅠ,Ⅱ,Ⅲ groups were fed with basal diet supplemented with 50 mg/kg of oregano essential oil and 100,200 and 300 mg/kg of probiotic bacteria,respectively,and the test Ⅳ,Ⅴ,Ⅵ groups were fed with basal diet supplemented with 100 mg/kg of oregano essential oil and 100,200 and 300 mg/kg probiotics,respectively.The feeding test lasted for 56 days.At the end of the test,three yellow-feathered broilers were randomly selected from each replicate for a 4-day metabolic examination.The results showed that the final weight and average daily gain of the yellow-feathered broilers in Groups Ⅱ and Ⅲ were significantly higher than those in the control group(P＜0.05).The average daily feed intake in Groups Ⅳ,Ⅴ and Ⅵ was considerably lower than that in the control group(P＜0.05).The feed to weight ratio of the yellow-feathered broilers in Groups Ⅱ,Ⅲ and Ⅳ was considerably lower than that in the control group(P＜0.05).It was understood that oregano essential oil had significant effects on average daily gain and average daily feed intake(P＜0.05)of the broilers,probiotics had significant effects on their final weight,average daily gain and feed to weight ratio(P＜0.05),and oregano essential oil and probiotics combined had in-teraction on their average daily gain(P＜0.05).The apparent digestibility of dry matter of the yellow-feathered broilers in Groups Ⅱ,Ⅲand Ⅳ was significantly higher than that of the control group(P＜0.05).The apparent digestibility of crude protein,crude ash and total en-ergy of Groups Ⅱ,Ⅲ,Ⅳ,Ⅴ and Ⅵ was significantly higher than that of the control group(P＜0.05).The apparent digestibility of crude fat of Groups Ⅱ and Ⅲ was significantly higher than that of the control group(P＜0.05).These data indicated that oregano essential oil had significant effects on the apparent digestibility of dry matter,on crude protein,crude fat,crude ash and total energy(P＜0.05)of the broil-ers.Probiotics had significant effects on their apparent digestibility of crude protein,crude fat,crude ash and total energy(P＜0.05);and oregano essential oil and probiotics combined had interactive effects on their apparent digestibility of dry matter,crude protein,crude fat,crude ash and total energy(P＜0.05).The GSH-Px in the serum of the yellow-feathered broilers in Groups Ⅱ,Ⅲ,Ⅳ,Ⅴ and Ⅵ was sig-nificantly higher than that in the control group(P＜0.05),and the MDA in their serum was significantly lower than that in the control group(P＜0.05).The activity of SOD in the serum of the yellow-feathered broilers in all the experimental groups was significantly higher than that in the control group(P＜0.05).The serum T-AOC of the yellow-feathered broilers in Group Ⅵ was significantly higher than that of the con-trol group(P＜0.05).These results suggested that oregano essential oil had a significant effect on the levels of GSH-Px,SOD,T-AOC and MDA in the serum of the broilers(P＜0.05),probiotics had a significant effect on the content of GSH-Px in their serum(P＜0.05),and probiotics had an interaction with oregano essential oil(P＜0.05).In conclusion,the combined addition of oregano essential oil and probiot-ics to the diets of yellow-feathered broilers effectively improved the growth performance,the digestion and absorption capacity of nutrients,and the antioxidant function of the organism in yellow-feathered broilers.The recommended dosages of oregano essential oil and probiotics were 50 mg/kg and 200 mg/kg,respectively.关键词
牛至精油/枯草芽胞杆菌/乳酸杆菌/黄羽肉鸡/生长性能Key words
oregano essential oil/Bacillus subtilis/Lactobacillus/yellow-feathered broilers/growth performance分类
农业科技引用本文复制引用
邓留坤,赵振国..牛至精油与益生菌联用对黄羽肉鸡生长性能、营养物质表观消化率和抗氧化功能的影响[J].畜牧与兽医,2025,57(8):7-12,6.基金项目
陕西省科学技术厅2023年陕西省重点研发计划项目(2023-YBNY-111) （2023-YBNY-111）
