Growth Performance, Body Lipid, Brood Amount, and Rearing Environment Response to Supplemental Neutral Phytase in Zebrafish (Danio Rerio) Diet

Zebrafish ◽  
2013 ◽  
Vol 10 (3) ◽  
pp. 433-438 ◽  
Author(s):  
Liwei Liu ◽  
Jianmei Su ◽  
Xu-Fang Liang ◽  
Yuliang Luo
Keyword(s):  
Growth Performance ◽  
Danio Rerio ◽  
Body Lipid ◽  
Rearing Environment ◽  
Neutral Phytase

Vitamin C supplementation improves growth performance and caudal fin regeneration in zebrafish ( Danio rerio )

2021 ◽  
Author(s):  
Pedro Luiz Pucci Figueiredo Carvalho ◽  
Pedro Henrique Ventura Almeida ◽  
William dos Santos Xavier ◽  
Igor Simões Tiagua Vicente ◽  
Matheus Gardim Guimarães ◽  
...  
Keyword(s):  
Vitamin C ◽  
Growth Performance ◽  
Danio Rerio ◽  
Caudal Fin ◽  
Fin Regeneration ◽  
Vitamin C Supplementation

scholarly journals Dietary Available Phosphorus Affected Growth Performance, Body Composition, and Hepatic Antioxidant Property of Juvenile Yellow CatfishPelteobagrus fulvidraco

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Qin Tang ◽  
Chunfang Wang ◽  
Congxin Xie ◽  
Jiali Jin ◽  
Yanqing Huang
Keyword(s):  
Body Composition ◽  
Growth Performance ◽  
Lipid Content ◽  
Antioxidant Property ◽  
Available P ◽  
Available Phosphorus ◽  
Body Lipid ◽  
Yellow Catfish ◽  
P Content ◽  
P Utilization

An 8-week feeding trial was carried out with juvenile yellow catfish to study the effects of dietary available phosphorus (P) on growth performance, body composition, and hepatic antioxidant property. Six pellet diets were formulated to contain graded available P levels at 0.33, 0.56, 0.81, 1.15, 1.31, and 1.57% of dry matter, respectively. Triplicate tanks with each tank containing 60 juveniles (3.09 ± 0.03 g) were fed one of the six experimental diets for 8 weeks. Specific growth rate, feeding rate, and protein efficiency ratio were significantly higher at 0.81% dietary available P. Efficiency of P utilization distinctly decreased with increasing P level. Body lipid content significantly decreased while body ash and feces P content significantly increased with increasing P level. Quadratic regression analysis indicated that vertebrae P content was maximized at 1.21% dietary available P. Fish fed 1.57% dietary available P had highest activity of hepatic superoxide dismutase and catalase and malonaldehyde content. In conclusion, decreasing dietary available P increased P utilization efficiency and body lipid content while decreased vertebrae P content. Juvenile yellow catfish were subjected to oxidative damage under the condition of high dietary P content (1.57%), and the damage could not be eradicated by their own antioxidant defense system.

scholarly journals Rapid-warming tolerance correlates with tolerance to slow warming but not growth at non-optimal temperatures in zebrafish

2020 ◽  
Author(s):  
Eirik Ryvoll Åsheim ◽  
Anna H Andreassen ◽  
Rachael Morgan ◽  
Fredrik Jutfelt
Keyword(s):  
Global Warming ◽  
Thermal Stress ◽  
Growth Performance ◽  
Danio Rerio ◽  
Thermal Tolerance ◽  
Optimal Temperature ◽  
Medium Term ◽  
Physiological Mechanisms

Global warming is predicted to increase both acute and prolonged thermal challenges for aquatic ectotherms. Severe short and medium-term thermal stress over hours to days may cause mortality, while longer sub-lethal thermal challenges may cause performance declines. The interrelationship between the responses to short, medium and longer thermal challenges is unresolved. We asked if the same individuals are tolerant to both rapid and slow warming challenges, a question which has so far received little attention. Additionally, we investigated the possibility of a thermal syndrome where individuals in a population are distributed along a warm-type to cold-type axis. We tested whether different thermal traits correlate across individuals by acclimating 200 juvenile zebrafish (Danio rerio) to sub- or supra- optimal temperatures for growth (22 and 34°C) for 40 days and measured growth and thermal tolerance at two different warming rates. We found that tolerance to rapid warming correlated with tolerance to slow warming. However, individual tolerance to neither rapid nor slow warming correlated with growth at the supra-optimal temperature. We thus find some support for a syndrome-like organisation of thermal traits, but the lack of connection between tolerance and growth-performance indicates a restricted generality of a thermal syndrome. The results suggest that tolerance to rapid warming may share underlying physiological mechanisms with tolerance to slower heating, and indicate that the relevance of acute critical thermal tolerance extends beyond the rapid ramping rates used to measure them.

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