_____________________________________________________________________________________________________ ++ Associate Professor; # Sr. Scientist & Head; † Subject Matter Specialist (Animal Sc.); ‡ Associate Director of Extension Education; ^ Director of Extension Education; ## Asst. Prof.; *Corresponding author: E-mail: ashim.saikia@aau.ac.in; Int. J. Environ. Clim. Change, vol. 13, no. 8, pp. 2111-2117, 2023 International Journal of Environment and Climate Change Volume 13, Issue 8, Page 2111-2117, 2023; Article no.IJECC.101619 ISSN: 2581-8627 (Past name: British Journal of Environment & Climate Change, Past ISSN: 2231–4784) Comparative Performances of Improved Poultry Varieties under Backyard Rearing System in Dhemaji District of Assam Ashim Kumar Saikia a++* , Gunjan Gogoi b# , Prajwalita Pathak b† , Manoranjan Neog c‡ , Prasanna Kumar Pathak d^ and Rafiqul Islam e## a Lakhimpur College of Veterinary Science, Joying, Assam Agricultural University, North Lakhimpur, India. b Krishi Vigyan Kendra, Dhemaji, Assam Agricultural University, Simen Chapori, India. c DEE, Assam Agricultural University, Jorhat, India. d Assam Agricultural University, Jorhat, India. e Biswanath College of Agriculture, Assam Agricultural University, Biswanath Chariali, India. Authors’ Contributions This work was carried out in collaboration among all authors. Authors AKS and GG conceptualized the study, data collection and drafted the original manuscript. Authors PP, MN, AKS and RI analyzed, reviewed and edited the manuscript. Authors MN and PKP supervised the entire study. All authors discussed the findings and contributed to the final manuscript. All authors read and approved the final manuscript. Article Information DOI: 10.9734/IJECC/2023/v13i82169 Open Peer Review History: This journal follows the Advanced Open Peer Review policy. Identity of the Reviewers, Editor(s) and additional Reviewers, peer review comments, different versions of the manuscript, comments of the editors, etc are available here: https://www.sdiarticle5.com/review-history/101619 Received: 11/04/2023 Accepted: 13/06/2023 Published: 22/06/2023 Original Research Article