Panja, P. (1999) “A Study on the Appropriated Level of Protein on the Performance of Indigeneous Chickens in Various Period of Ages”, Agriculture and Natural Resources. Bangkok, Thailand, 33(4), pp. 543–553. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/240407 (accessed: 18 September 2026).