Inclusion of vegetable oils in diets of broiler chicken raised in hot weather and effects on antioxidant capacity, lipid components in the blood and immune responses

Abstract

The aim of this study was to assess the effects of vegetable oils on the antioxidant capacity, blood lipid components and immune responses in chickens raised in hot climate. In a completely randomized design, 300 chicks were assigned to four treatments and five replicates with 15 chicks per each. The highest concentration of malondialdehyde was found in broilers fed palm oil (p < 0.05). Chickens fed corn oil had the lowest and those fed flaxseed oil had the highest antioxidant enzymes activities (p < 0.05). The highest hepatic Alanine-transferase and Aspartate-transferase was found in chickens fed corn oil and the lowest levels in those received flaxseed and olive oils (p < 0.05). The highest hypersensitivity was in chickens fed palm oil and the lowest was for olive oil. The highest antibody titer against sheep red blood cells was found in chickens fed flaxseed oil and the lowest titer was for those received palm oil (p < 0.05). The highest triglyceride, cholesterol and very low density lipoprotein and the lowest high density lipoprotein was found in chickens fed palm oil and vice versa for flaxseed and olive oils. Olive and flaxseed oils had beneficial effects on antioxidant activity and lipid attributes and palm oil had detrimental effects on these parameters that related to the poultry health.

Thermal Comfort, Growth Performance and Welfare of Olive Pulp Fed Broilers during Hot Season

“…According to Mujahid et al [45], the addition of 6.7% olive oil to the diet of broiler chickens reared under thermo-neutral or heat-stress conditions reduced mitochondrial ROS production and decreased oxidative damage in the birds. Recent feedings trials performed in broilers reared at high ambient temperatures revealed the antioxidant effect of olive oil and the improvement of the birds' immune system [46], the improvement of hormonal indicators and chickens' performances as well as the increased activity of heat tolerance genes in chickens [47].…”

“…On the other hand, the review of the literature shows that there are currently no data available on the dietary impact of OP on the thermal comfort of broilers. In contrast, there are a few studies on the nutritional effects of various by-products such as olive oil [45][46][47] and olive leaves [48,49] on heat stress in chickens. Recent nutritional studies in broilers reared at high ambient temperatures have demonstrated the antioxidant effect of olive oil [45,46], improved birds' immune system [46], improved hormonal indicators and chick performance and the increased activity of genes responsible for the birds' thermal resistance [47].…”

“…In contrast, there are a few studies on the nutritional effects of various by-products such as olive oil [45][46][47] and olive leaves [48,49] on heat stress in chickens. Recent nutritional studies in broilers reared at high ambient temperatures have demonstrated the antioxidant effect of olive oil [45,46], improved birds' immune system [46], improved hormonal indicators and chick performance and the increased activity of genes responsible for the birds' thermal resistance [47]. Similarly, the addition of olive leaf extract to broiler water or feed has been shown to alleviate the negative impact of heat stress and improve performance and antioxidant status in heat-tressed chickens [48,49].…”

Nutritional Strategies to Improve Meat Quality and Composition in the Challenging Conditions of Broiler Production: A Review

“…Oil and fat sources are important energy sources, and they are normally included, at levels of up to 5%, in broiler feed [ 103 ]. The freshness of oil and fat sources is important in poultry feed because oxidized oil and fat can induce lipid peroxidation and oxidative stress in animals [ 104 ].…”