DefinePK

Abstract

This study was carried out in The Department of Animal Production, College of Agriculture, University of Basrah, has a poultry hall. The research spanned from November 22, 2022, to January 21, 2023, having the main goal of figuring out how laying hens' ability to produce eggs is affected by the amount of astaxanthin they consume in their diet. At the age of 60 weeks, 60 ISA Brawn laying hens were divided into five treatment groups at random, with 12 laying hens per treatment, and the birds of each treatment were divided into four replicates (3) chickens per (repeater). The birds were fed a productive diet containing 17.5% crude protein, and a representative energy of 2735.20 kcal/kg feed, for the T1, T2, T3, T4, and T5 parameters, astaxanthin was administered at amounts of 0, 3, 6, and 12 mg/kg feed, respectively. The results showed that the addition treatments T2, T3, T4, T5 to a significant superiority (P<0.05) in each of the number of eggs produced, egg production ratio, egg mass, the quantity of food consumed and improved nutritional conversion efficiency for all addition parameters compared to T1 treatment. This study discovered that feeding astaxanthin to laying hens improved their ability to produce.