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- Title
Effects of delayed first feeding on growth and survival of Hucho taimen larvae.
- Authors
ZHANG Yong-quan; YIN Jia-sheng; DU Jia; ZHANG Ying; TONG Guang-xiang
- Abstract
This paper studied the effects of delaying first breeding Hucho taimen larvae for different days on the larvae growth, survival, and body size. Five treatments were installed, i. e., feeding begins on the first eating day (control, S0) and on the 9th, 12th, 15th, and 18th days after the first eating day (S1 -S4) at 10. 4-14. 9 °C, respectively. By the end of the experiment (36-day), the growth rate and initial feeding rate in S1 was higher than that in S0, and the overall mortality rate in S1 was lower, but the body size and mass in S1 and S0 had no significant difference. Compared with S0, S2 had higher growth rate, initial feeding rate, total mortality, and self-mutilation mortality, the body mass was significantly lower, but the body size had less difference. S3 had higher first feeding rate, body size, total mortality, and self-mutilation mortality, but significantly lower body mass than S0, whereas the growth rate had less difference. In S4, the growth rate and body mass were lower, and the total mortality and self-mutilation mortality were higher than those in S0. It was suggested that under the same conditions, delaying first feeding for 9 days would induce H. taimen larvae presenting "completely compensatory growth", and this feeding way could be applied for the culture of H. taimen larvae in their initial feeding period.
- Subjects
FISH larvae; TAIMEN; FISH breeding; FISH feeds; ANIMAL mortality
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2013, Vol 24, Issue 4, p1125
- ISSN
1001-9332
- Publication type
Article