List of Articles Open Access Article Abstract Page Full-Text 1 - Investigation of Economies of Scope for Laying Hen Industrials Units in Iran Reza Esfanjyari kenari Mansoor Zibaee Open Access Article Abstract Page Full-Text 2 - Profitability investigation of poultry farms in Mazandaran province Using Behavioural profit and Stochastic Frontier Approaches Mohammad Ahmadpor Borazjani Saman Ziaee Reza Esfanjyari kenari Open Access Article Abstract Page Full-Text 3 - Effect of commercial organic acids and essential oils on morphology , microbial population and blood parameters of laying hens Hosein Salehi Abolfazl Zarei Banafshe Gholamhoseini Open Access Article Abstract Page Full-Text 4 - The effects of different levels of protein in pre-starter diet on performance of broiler Alireza Safamehr Veise Mahmood Nejad Yousef Mehman navaz Open Access Article Abstract Page Full-Text 5 - Estimation of Variance Components for Body Weight and Hatchability Traits in Domestic Zone Fowls (Mazandaran Province) Saman Sharifi asadi malfe Mohammad Ali Kamali Sarvestani Abolghasem Lavvaf Open Access Article Abstract Page Full-Text 6 - The effects of processed apple peel waste (APW) in grower and finisher diet on performance and carcass traits of broiler chicks Navab Ghobadi Zahara Heidari safar Ghorbanali Sadeghi