The characteristic changes at necropsy were swelling, hyperemia, hemorrhage and atrophy of proventriculus papillae and with mucus on the surface of papillae.
剖检可见腺胃乳头肿胀、充出血、或乳头凹陷，并附有大量黏液；
理
者;的;，恐
;
;The characteristic changes at necropsy were swelling, hyperemia, hemorrhage and atrophy of proventriculus papillae and with mucus on the surface of papillae.
剖检可见腺胃乳头肿胀、充出血、或乳头凹陷，并附有大量黏液；
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