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

Janjira Sittiya, Koh-en Yamauchi, Kohsyo Yamauchi and Phunnathorn Phuchivatanapong

International Journal of Poultry Science 17 ( 11 ): 552 - 559 , 2018