The effect of dietary protein and lysine on egg quality and production of laying hens during 28-42 weeks of age

پژوهشهای علوم دامی ایران

Article 6, Volume 6, Issue 4 - Serial Number 20, December 2014, Pages 333-341   

Document Type: Poultry Nutrition

DOI: 10.22067/ijasr.v6i4.45421

Authors

Hasan Mohammadi Emarat^{* 1}; Abolghasem Golian²; Abdolmansour Tahmasebi³; Hasan Kermanshahi²

¹Department of Animal Science, Zabol Faculty of Agriculture, Zabol, Iran

²Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

³Dept. of Animal Science, College of Agri. Ferdowsi University of Mahhad, Mashhad, Iran

Abstract

An experiment was conducted to evaluate the effect of dietary crude protein and lysine levels on quality and quantity of egg production. Fifteen diets consisted of 3 levels of protein (14, 15 and 16%) and 5 levels of lysine (0.71, 0.74, 0.77, 0.80 and 0.83 %) in a 35 factorial arrangement were provided. Each diet was randomly fed to 4 replicates of 12 birds, during four periods of 4 weeks (28-44wks of age). Egg number and mortality was recorded daily, whereas feed consumption determined for each period. Eggs from each replicate were weighed at the end of three consecutive days of each period and six eggs were used to measure the egg quality characteristics. Although the feed intake did not affected by dietary protein but the egg production, egg mass and feed conversion were improved significantly (p

Keywords

Protein; Lysine; Egg production; Laying hen; Egg quality

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