Effect of Natural Antioxidants Supplementation as Feed Ingredients in Laying Hen Diet

Abstract

This study was conducted to elucidate the effect of two types of antioxidants containing compounds on some physiological components of laying hens for 8 weeks as well as egg quality with special reference to egg yolk cholesterol concentration. Ninety six adult Shaver White laying hens were randomly divided into six groups ,each contained sixteen birds , control group, two garlic groups (fed on basal diet plus 1g or 3g/kg), two yeast groups (fed on basal diet plus 2g or 4g /kg), and the last group received basal diet plus a mixture of 3g garlic and 4g yeast /kg. Feed intake significantly increased in groups received garlic (3g/kg) and that received garlic and yeast together, while egg weight , Haugh unit and egg mass, were not significantly affected but egg production percent significantly improved. Egg yolk cholesterol significantly declined in all treated groups, especially in that given both garlic and yeast. serum total lipids, triglycerides, cholesterol as well as LDL-C significantly declined in most treated groups while serum HDL-C significantly increased in the groups receiving garlic (3g/kg) or both garlic and yeast. Also serum total protein and albumin levels increased in the group supplemented with both garlic and yeast. Serum levels of estrogen and progesterone significantly increased in the group receiving both garlic and yeast. In conclusion dietary garlic and yeast powder can be used for laying hens to increase egg quality , since, they have a cholesterol-lowering effect.

Effects of dietary methyl sulfonyl methane and selenium on laying performance, egg quality, gut health indicators, and antioxidant capacity of laying hens

“…Dry matter 3) 88.20 Crude protein 3) 14.49 Crude fat 3) 4.01 Crude ash 3) 14.84 Calcium 4) 4.10 Sulfur 3) 0.15 Available phosphorus 4) 0.28 Lysine 4) 0.65 Methionine 4) 0.32 Methionine+cysteine 4) 0.60 Methyl sulfonyl methane 3) 0.03 1) Mineral mixture provided the following nutrients per kg of diet: Fe, 50 mg; Cu, 24 mg; Zn, 90 mg; Mn, 96 mg; I, 12 mg. the daily feed intake per bird. Egg production and egg weight were recorded daily and used to calculate the egg mass.…”

“…Antioxidants play important roles in maintaining the health and performance of laying hens [1] by protecting the host from the detrimental effects of free radicals and toxic products of lipid peroxidation [2]. Thus, it has been common practice to add synthetic or natural antioxidants into the diets of chickens to alleviate oxidative stress during production [3,4].…”

Effects of Dietary Organic and Inorganic Sulfur on Laying Performance, Egg Quality, Ileal Morphology, and Antioxidant Capacity in Laying Hens

“…There are demands for using natural products that can prevent lipid oxidation in fat-enriched animal foods due to consumer preferences for natural substances and toxicological concerns about synthetic antioxidants [ 4 ]. The natural antioxidant can fully replace the synthetic antioxidant function and be used as a valuable source for reducing oxidative stress [ 5 , 6 ]. Thus, dietary natural antioxidants could be beneficial in limiting the deleterious effects of oxidative stress in chickens [ 7 , 8 ].…”

Effects of Dietary Organic and Inorganic Sulfur on Laying Performance, Egg Quality, Ileal Morphology, and Antioxidant Capacity in Laying Hens

“…There are demands for using natural products that can prevent lipid oxidation in fat-enriched animal foods, due to consumer preferences for natural substances and toxicological concerns of synthetic antioxidants [4]. The natural antioxidant can fully replace the synthetic antioxidant function and be used as a valuable source for reducing oxidative stress [5,6]. Thus, dietary natural antioxidants could be beneficial in limiting deleterious effects of oxidative stress in chickens [7,8].…”