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湯鯉繁養殖技術開發

  • 日期:111-10-21
  • 計畫編號:110農科-6.2.4-水-A1(1)
  • 年度:2021
  • 領域:漁業科技研發
  • 主持人:陳富美

大口湯鯉(Kuhlia rupestris )為臺灣原生淡水魚 ,可作為觀賞魚、食用魚及遊釣魚。為利於後續人工繁殖試驗時辨識魚隻個體,本研究進行晶片標識試驗,進行標識的大口湯鯉體全長(TL)範圍在10.0-22.7 cm,體重(BW)範圍在15-227 g,體全長及體重的迴歸方程式為BW=0.0084×TL3.2528 (R2=0.9829,n=40)。晶片植入一個月後,魚隻的死亡率及晶片標識脫落率為0%。採樣量測大口湯鯉腸道長與體全長之比小於1,且觀察到有幽門垂的構造。目前大口湯鯉無專用飼料,本研究以3種市售飼料(代號A飼料、B飼料及C飼料)餵飼大口湯鯉稚魚,結果攝食C飼料的魚隻增重率較攝食A飼料者佳。將C飼料以3種投餵頻率餵飼大口湯鯉稚魚,結果為日投餵3次組的魚隻增重率顯著高於日投餵1次組及日投餵2次組。

研究報告摘要(英)


Kuhlia rupestris is a native freshwater fish in Taiwan, which can be used asornamental fish, food fish and game fish. In order to facilitate the identification of individual fish during the subsequent artificial reproduction test, this study conducted a chip identification test. The total length (TL) and body weight (BW) of the fish undergoing chip identification test ranged from 10.0 to 22.7 cm and from 15 to 227 g, respectively. The relationship between TL and BW was estimated as BW=0.0084×TL3.2528 (R2=0.9829,n=40). One month after the chip was implanted, the mortality rate of the fish and the chip identification drop-off rate were 0%. The ratio of intestinal length to total body length of K. rupestris was less than 1, and the structure of pyloric caeca was observed. At present, there is no special feed for K. rupestris. In this study, three commercial feeds ( A feed, B feed and C feed) were used to feed K. rupestris juveniles. As a result, the weight gain rate of fish fed with C feed was better than those fed with A feed. Then we fed C feed to K. rupestris juveniles at 3 feeding frequencies. The results showed that the weight gain rate of the fish in the three-meals-daily group was significantly higher than that of the one-meal-daily group and the two-meals-daily group.