• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
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WU Bin, FAN Hai-ping, ZHONG Quan-fu, WENG Zu-tong, LIANG Ping, CHEN Du-huang. Studies on the Digestive Tube Index and the Activity Distribution of Two Digestive Protease Activity in NEW GIFT Tilapia(Oreochromis niloticus)[J]. Fujian Journal of Agricultural Sciences, 2013, 28(8): 727-730. DOI: 10.19303/j.issn.1008-0384.2013.08.001
Citation: WU Bin, FAN Hai-ping, ZHONG Quan-fu, WENG Zu-tong, LIANG Ping, CHEN Du-huang. Studies on the Digestive Tube Index and the Activity Distribution of Two Digestive Protease Activity in NEW GIFT Tilapia(Oreochromis niloticus)[J]. Fujian Journal of Agricultural Sciences, 2013, 28(8): 727-730. DOI: 10.19303/j.issn.1008-0384.2013.08.001

Studies on the Digestive Tube Index and the Activity Distribution of Two Digestive Protease Activity in NEW GIFT Tilapia(Oreochromis niloticus)

  • Digestive tube index and the activity distribution of pepsin and trypsin In NEW GIFT Tilapia (Oreochromis niloticus) were studied.It was found that Oreochromis niloticus had intestinal length (IL) /total length (TL) of 4.921 ± 0.187, intestinal weight (IW) /body weight (BW) of 0.018 ± 0.002, and hepatopancreas weight (HW) /BW of 0.014±0.003, splanchnic weight (SW) /BW of 0.039±0.007.The result showed that Oreochromis niloticus was a kind of heterophagous fish with partial phytophagy food habit.After starvation and refeeding, Pepsin activity increased to a maximum of 167.872Uat 12h.However, it reduced from12hto 96h;especially 12hto 24h, the decrease rate was significant.Trypsin activities of hepatopancreas, foregut, midgut and hindgut were tested.The specific activity of trypsin in four organs was in the order of hepatopancreas<midgut<foregut<hindgut.The Trypsin activities in four parts increased up to a maximum during the first stage, then decreased smoothly.trypsin activity of each tissues was significant difference (P<0.05) 。
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