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Information Journal Paper

Title

Influence of different levels of omega-3 fatty acids on the performance of laying hens under physiological stress induced by dexamethasone

Pages

  55-65

Abstract

 The effect of Omega-3 fatty acids on Performance and physical characteristics of eggs in laying hens under physiological stress was evaluated using 96 LSL-Lite layers in a 2 × 3 factorial experiment with two levels of stress (stress and non-stress) and three levels of Omega-3 fatty acids (0, 0. 24 and 0. 48% of diet) in a completely randomized design for 70 days. From age of 35 to 40 weeks, birds were fed with basal diet and various levels of Omega-3 fatty acids, at 41 weeks of age. Physiological stress was induced by adding 1. 5 mg Dexamethasone/kg of diet for one week. Dexamethasone was then removed from the diet and the birds were fed with pre-stressed diets for three weeks (post-stress period). Percentage of production, feed intake, Egg mass, as well as physical traits of eggs in stress and post-stress periods were evaluated. During the stress period, the percentage of egg production, weight and Egg mass, Shell thickness decreased under stress while feed conversion ratio increased (P<0. 05). Feed intake of stressed birds fed diets containing different levels of Omega-3 fatty acids was lower than other groups (P<0. 05). The lowest yolk index was observed in the stressed birds fed diets containing levels of 0. 24 and 0. 48 % Omega-3 fatty acids. In the post-stress period, the egg production, Egg mass, feed intake in birds that experienced stress was lower than non-stressed birds and had higher feed conversion ratio (P<0. 05). During this period, the Shell thickness of the stressed birds receiving level of 0. 48% of the Omega-3 fatty acids was lower than other groups (P<0. 05). In general, the use of Omega-3 fatty acids in stressed laying hens with the intensification of reduced feed intake can increase adverse effects of stress on the Performance and egg quality.

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    APA: Copy

    BERENJIAN, A., SHARIFI, S.D., MOHAMMADI SANGCHESHMEH, A., & BAKHTIARIZADEH, M.R.. (2020). Influence of different levels of omega-3 fatty acids on the performance of laying hens under physiological stress induced by dexamethasone. ANIMAL PRODUCTION RESEARCH, 9(2 ), 55-65. SID. https://sid.ir/paper/369120/en

    Vancouver: Copy

    BERENJIAN A., SHARIFI S.D., MOHAMMADI SANGCHESHMEH A., BAKHTIARIZADEH M.R.. Influence of different levels of omega-3 fatty acids on the performance of laying hens under physiological stress induced by dexamethasone. ANIMAL PRODUCTION RESEARCH[Internet]. 2020;9(2 ):55-65. Available from: https://sid.ir/paper/369120/en

    IEEE: Copy

    A. BERENJIAN, S.D. SHARIFI, A. MOHAMMADI SANGCHESHMEH, and M.R. BAKHTIARIZADEH, “Influence of different levels of omega-3 fatty acids on the performance of laying hens under physiological stress induced by dexamethasone,” ANIMAL PRODUCTION RESEARCH, vol. 9, no. 2 , pp. 55–65, 2020, [Online]. Available: https://sid.ir/paper/369120/en

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