水产科学
水產科學
수산과학
Fisheries Science
2015年
10期
629-633
,共5页
杨振江%肖汉兵%田海峰%孟彦%胡乔木%王芳
楊振江%肖漢兵%田海峰%孟彥%鬍喬木%王芳
양진강%초한병%전해봉%맹언%호교목%왕방
大鲵%适宜投喂频率%特定生长率%饵料系数%消化酶活性
大鯢%適宜投餵頻率%特定生長率%餌料繫數%消化酶活性
대예%괄의투위빈솔%특정생장솔%이료계수%소화매활성
A ndrias dav idianus%suitable feeding frequency%special grow th rate%feed conversion ratio%digestive enzyme activity
在温度可人为控制在（19±1）℃的室内，于内壁光滑的面积为193 cm ×167 cm的水泥池中，按照每个池内80尾的密度人工饲养幼体大鲵。测量大鲵试验始末体长体质量，通过生长指标，组织营养成分及消化酶活性对比分析，探究大鲵幼体的适宜投喂频率。结果表明：饥饿处理使大鲵摄食率增加，消化酶活性增强。投喂频率为饥饿6d再连续投喂6d，特定生长率和质量增加率出现最大值，显著高于其他组（P＜0．05），且饵料系数最低。投喂频率为饥饿2d再连续投喂2d，蛋白含量高且脂肪含量低。投喂频率为饥饿6d再连续投喂6d、饥饿8d再连续投喂8d，存活率略低于其他组。若对存活率和组织营养成分要求比较高则饥饿2d再连续投喂2d为适宜投喂频率，如果对此没有严格要求则饥饿6d再连续投喂6d为大鲵幼体适宜投喂频率，采用该频率投喂可使存活率、生长性能和营养成分都能达到较高水平。
在溫度可人為控製在（19±1）℃的室內，于內壁光滑的麵積為193 cm ×167 cm的水泥池中，按照每箇池內80尾的密度人工飼養幼體大鯢。測量大鯢試驗始末體長體質量，通過生長指標，組織營養成分及消化酶活性對比分析，探究大鯢幼體的適宜投餵頻率。結果錶明：饑餓處理使大鯢攝食率增加，消化酶活性增彊。投餵頻率為饑餓6d再連續投餵6d，特定生長率和質量增加率齣現最大值，顯著高于其他組（P＜0．05），且餌料繫數最低。投餵頻率為饑餓2d再連續投餵2d，蛋白含量高且脂肪含量低。投餵頻率為饑餓6d再連續投餵6d、饑餓8d再連續投餵8d，存活率略低于其他組。若對存活率和組織營養成分要求比較高則饑餓2d再連續投餵2d為適宜投餵頻率，如果對此沒有嚴格要求則饑餓6d再連續投餵6d為大鯢幼體適宜投餵頻率，採用該頻率投餵可使存活率、生長性能和營養成分都能達到較高水平。
재온도가인위공제재（19±1）℃적실내，우내벽광활적면적위193 cm ×167 cm적수니지중，안조매개지내80미적밀도인공사양유체대예。측량대예시험시말체장체질량，통과생장지표，조직영양성분급소화매활성대비분석，탐구대예유체적괄의투위빈솔。결과표명：기아처리사대예섭식솔증가，소화매활성증강。투위빈솔위기아6d재련속투위6d，특정생장솔화질량증가솔출현최대치，현저고우기타조（P＜0．05），차이료계수최저。투위빈솔위기아2d재련속투위2d，단백함량고차지방함량저。투위빈솔위기아6d재련속투위6d、기아8d재련속투위8d，존활솔략저우기타조。약대존활솔화조직영양성분요구비교고칙기아2d재련속투위2d위괄의투위빈솔，여과대차몰유엄격요구칙기아6d재련속투위6d위대예유체괄의투위빈솔，채용해빈솔투위가사존활솔、생장성능화영양성분도능체도교고수평。
Chinese giant salamander (Andrias davidianus) juveniles (18 months old) were reared in 193 cm × 167 cm cement tanks at a rate of 80 individuals per tank and fed in various feeding regimes at water tem‐perature of 19 ± 1 ℃ to evaluate the suitable feeding frequency via grow th performance ,body composition and digestive enzyme activity in an intensive aquaculture .The results showed that there were elevated food intake and digestive enzyme activity in the fasted salamander .The maximal weight gain rate (WGR) and specific growth rate (SGR) and minimal food conversion ratio (FCR) were observed in the salamander fed and fasted alternatively in a 6 day interval ,significantly higher or lower than those in the other groups(P<0.05) .The salamander fed and fasted alternatively in a 2 day interval(S2F2) had high protein content and low fat content ,and there was lower survival rate in the salamander fed and fasted alternatively in a 6 or 8 day interval (S6F6 and S8F8) than that in other groups .When very high survival rate and body nutri‐ents were hoped ,the suitable feeding frequency was of feeding and fasting alternatively in a 2 day interval . If not ,suitable feeding frequency was of feeding and fasting alternatively in a 6 day interval ,which the ju‐venile salamander had relatively high survival rate ,grow th performance and body nutrients .
