Sittiya J, Yamauchi K- en, Yamauchi K, Phuchivatanapong P. Effects of a Mixture of Wood Charcoal Powder and Wood Vinegar Solution on Escherichia coli, Ammonia Nitrogen, Vitamin C and Productive Performance of Laying Hens. Int. J. Poult. Sci. [Internet]. 2018 Oct. 15 [cited 2025 Sep. 22];17(11):552–559. Available from: https://ijpsjournal.org/index.php/ijps/article/view/2459