2020
DOI: 10.21608/mjapfp.2020.172397
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Effect of Dietary Supplementation With Some Feed Additives on the Performance of Laying Hens

Abstract: One hundred and eighty (180), 28 weeks old Gimmizah laying hens were used in the experiment. Hens were distributed at random into 6 treatment groups and divided into 3 replicates of 10 layers each in a completely randomized design. The experiment was performed at a private farm in, Tanta, Gharbia a Governorate, Egypt. The objective of this investigation was to study the effect of some feed additives as oxidized palm oil and different levels of probiotic supplementation on the performance of Gimmizah laying hen… Show more

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“…Although low levels of ROS are essential for many biochemical processes, their accumulation due to over-production or a decreased antioxidant defense, leads to damage of biological macromolecules and disruption of normal cell metabolism (Spurlock and Savage, 1993). During heat stress, the few antioxidants in the body are depleted and induce oxidative stress (Abou-Ashour et al, 2004).…”
Section: Introductionmentioning
confidence: 99%
“…Although low levels of ROS are essential for many biochemical processes, their accumulation due to over-production or a decreased antioxidant defense, leads to damage of biological macromolecules and disruption of normal cell metabolism (Spurlock and Savage, 1993). During heat stress, the few antioxidants in the body are depleted and induce oxidative stress (Abou-Ashour et al, 2004).…”
Section: Introductionmentioning
confidence: 99%
“…This causes imbalance between oxidative and antioxidant defense systems causing an oxidative damage to proteins and DNA (Droge, 2002). The few antioxidants in the body exhausted and led to oxidative stress (Abou-Ashour et al, 2004). T Heat stress in rabbits modifies their digestive behavior as the metabolic rate increased by about 20% in rabbits to keep a constant internal body temperature (Rakes et al, 1988).…”
Section: Introductionmentioning
confidence: 99%