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.
Highlights
Major poultry production industry has been located in the zones with hot and humid climate (Daghir, 2008)
Researchers (Sadeghi et al, 2013; Alagawany et al, 2019) reported that high levels of oils containing n-6 poly unsaturated fatty acids (PUFA) resulted in a decrease antibody response against antigens or immunoglobulin production
There was no differences for MDA level among chickens fed oils containing Pufa (p > 0.05)
Summary
Major poultry production industry has been located in the zones with hot and humid climate (Daghir, 2008). In these areas, producers have to utilize systems or nutritional management for control of housing or body temperature, to ameliorate the harmful effects of heat stress on the performance and health of chickens (Lara & Rostagno, 2013). The type of Pufa can affect some immune parameters in animals In this regard, researchers (Sadeghi et al, 2013; Alagawany et al, 2019) reported that high levels of oils containing n-6 PUFA resulted in a decrease antibody response against antigens or immunoglobulin production
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