The effect of different levels of dietary protein on productive performance and some blood parameters in Japanese quail

Authors
Saleh Tabatabaei Vakili
Vahid Darabi
Khalil Mirzadeh
Ali َAghaei
Abstract
The aim of this study was to investigate the effect of different levels of dietary protein on production and some blood parameters in Japanese quail. This experiment was carried out in a completely randomized design with ? treatments, ? replicates and ?? adult Japanese quail in each replicate for ?? days. Treatments consisted of ? dietary protein levels include the ??, ??, ??, ?? and ?? percent, which were set in the basal diet of corn and soybeans meal. After ? weeks of the experimental diets consumption, egg production rate, egg weight, feed intake and feed conversion ratio were measured and recorded weekly for ? weeks. Every ? weeks, ? eggs were selected randomly from each replicate, and quality characteristics of eggs were evaluated. At the end of experiment, ? birds from each replicate were selected randomly and blood collection was done for evaluation the blood parameters. The results showed that dietary protein levels had a significant effect on some productive and blood characteristics of Japanese quails including shell strength, albumen weight, albumen diameter, yolk weight, yolk height, as well as blood values of triglycerides and LDL (p
Keywords
Blood metabolites
Egg quality
Japanese quail
Protein