The number of chickens in Thailand increased substantially between 1992 and 2003
(from 135 to 253 million birds). It then dropped to 180 million in 2004 following the outbreak
of HPAI. The chicken stock recovered to 254 million birds in 2005 (Table 2a) but fell
again to 184 million birds in 2006 (Table 2a). Total production fell drastically in 2004 and
has not yet returned to the pre-HPAI levels (Table 2b).