Proventriculus and gizzard lesion in embryos and chicks of broiler.
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The time of appearance and subsequent transformation of proventriculus and gizzard lesions were studied in embryos and chicks of broiler.<BR>In proventriculus, only a small number of erosions with haemorrhage were observed just before and after hatching. On the other hand, haemorrhages and erosions in gizzard were observed at a high rate. Haemorrhages occured at a high rate in newly hatched chicks, and the incidence of this lesion were remarkably reduced after 2 days old. Gizzard erosion appeared after 2 days of age and the incidence increased from 6 days old chicks. Haemorrhages appeared mainly at site IV and occasionally at sites I and II, while erosions, at site I. Histopathologically, congestion of the cappillaries and desquamation of surface epithelial cells were seen in haemorrhagic lesion. Haemorrhagic lesion was restored immediately. At the first stage of erosion, cavitation in the horizontal koilin layer caused by a depression of secretion of surface epithelial cells and an increase of desquemated cells was observed. Ulceration occured in severe cases.<BR>The gizzard haemorrhagic lesions showed no correlation with the occurrence of erosion.
- 公益社団法人 日本獣医師会の論文
公益社団法人 日本獣医師会 | 論文
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