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The antioxidative properties of thyme, cinnamon, and pomegranate oils in heat-stressed broilers

文献类型： 外文期刊

作者： Wang, Dingfa 1 ; Sayed, Mohamed Abdelhameed Mohamed 2 ; Galal, Ali Elsayed 2 ; Attaai, Abdelraheim Hassan 3 ; Makled, Mohamed Nabil 2 ; Ali, Abdalla Hassan Hussein 4 ; Wei, Chen 5 ; Habib, Mohamed Ahmed 2 ; Abdelfattah, Mostafa Galal 2 ; Abouelezz, Khaled 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571101, Peoples R China

2.Assiut Univ, Fac Agr, Dept Poultry Prod, Assiut 71526, Egypt

3.Assiut Univ, Fac Vet Med, Dept Anat, Assiut 71529, Egypt

4.South Valley Univ, Fac Agr, Qena, Egypt

5.Minist Agr & Rural Affairs, Inst Anim Sci, Guangdong Acad Agr Sci, Key Lab Anim Nutr & Feed Sci South China, Guangzhou 510640, Peoples R China

关键词： Thermal stress; Villus morphology; Antioxidative capacity; Phytogenic supplement; Broiler chicken

期刊名称：POULTRY SCIENCE （ 影响因子：4.2； 五年影响因子：4.5 ）

ISSN： 0032-5791

年卷期： 2025 年 104 卷 7 期

页码：

收录情况： SCI

摘要： This study evaluated the effects of different feed additives on growth performance and heat stress mitigation in broiler chickens. Three hundred 1-d-old Cobb broiler chicks were randomly allocated into five treatments, each treatment contained six replicates (10 birds/replicate). Treatment 1 (-Control) was fed a basal diet (BD) under thermo-neutral conditions between d 1 and 42 of age. Treatment 2 (+Control) also fed the BD under thermo-neutral conditions from d 1 to 28 of age, followed by exposure to cyclic heat stress (HS; 36 degrees C between 0900 and 1700 h, then to 24 degrees C between 1700 and 0900 h daily) during the fifth week. During the fifth week, Treatments 3, 4, and 5 underwent the same HS regime and fed the same BD containing 15g/kg of thyme oil (TO), cinnamon oil (CO), and pomegranate oil (PO) from d 1 to 42, respectively. Compared to the thermoneutral control, HS control exhibited lower ADFI, higher FCR, increased mortality rate, altered plasma biochemicals, and reduced anti-oxidant capacity. Broilers supplemented with PO showed a 14.4 % increase in final BW and a 25.8 % in ADG during recovery period. FCR was improved by 16.9 %, and mortality dropped to 6 % compared to 10 % in the HS control, suggesting reduced losses under heat stress. TO and CO treatments also showed beneficial effects compared to the HS control group. The supplemented feed additives decreased plasma cholesterol, triglycerides, and malondialdehyde content, while increasing plasma glutathione peroxidase activity and total antioxidant capacity relative to the HS control. TO, CO, and PO treatments exhibited higher plasma superoxide dismutase activity compared to the HS control. All supplemented treatments showed lower H/L ratio compared to HS control (P < 0.05). The PO and TO treatments exhibited an increased jejunal villus/crypt ratio relative to the control groups. In conclusion, supplementing broiler diets with PO, TO, and CO can alleviate heat stress effects, improve growth performance, and potentially boost profitability for poultry farmers, with PO providing the most significant benefits in both thermoneutral and heat stress conditions.

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