Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/45208
標題: The development of gastrointestinal tract and pancreatic enzymes in white roman geese
作者: Shih, B.L.
系統管理者
Yu, B.
Hsu, J.C.
許振忠
余 碧
關鍵字: geese
gastrointestinal tract
pancreatic enzymes
development
newly-hatched chick
posthatch development
digestive organs
small-intestine
young turkeys
body-weight
growth
broiler
lipase
age
期刊/報告no:: Asian-Australasian Journal of Animal Sciences, Volume 18, Issue 6, Page(s) 841-847.
摘要: The objective of this experiment was to investigate the development of gastrointestinal tract and activities of pancreatic enzymes in White Roman geese. Thirty developing embryos at the 22th, 24th and 26th day of incubation and at hatching, and sixteen or eight goslings, half males and half females, at the 1, 3, 7 or 11, 14, 21 and 28 days of age were sampled, respectively. The weights of the yolk, gastrointestinal tract and intestinal length, and the activities of pancreatic enzymes were measured. Residual yolk weight decreased rapidly during late-incubation and was nearly depleted,at 3 days of age. The protein and energy contents in the residual yolk of goslings at 3 days of age were significantly (p < 0.05) less than those at the late incubation. From 6 days before hatching to 28 days of age, the absolute weights of gizzard, proventriculus, liver, pancreas, small intestine and large intestine in goslings increased by 48, 457, 94, 2334, 89 and 76 times, respectively. The relative weights of proventriculus, gizzard, liver, pancreas, small intestine and large intestine reached peaks at 3, 3, 14, 14, 11 and 11 days of age, respectively, and then decreased gradually. However, the relative lengths of small intestine and large intestine reached peaks at 3 days of age and at hatching, respectively. The activities of pancreatic trypsin and chymotrypsin increased sharply from hatching to 14 day of age, and then decreased gradually until 21 days of age. The activity and specific activity of pancreatic amylase were increased following by age and peaked at 7 to 11 and 21 days of age, respectively. The activity and specific activity of pancreatic lipase reached a plateau from 11 to 28 days of age. These results indicate that the gastrointestinal tract and activities of pancreatic enzymes developed more rapidly than body weight through the early growing period of goslings.
URI: http://hdl.handle.net/11455/45208
ISSN: 1011-2367
Appears in Collections:動物科學系

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