Voluntary timing of food intake increases weight gain and reduces basal plasma cortisol levels in common carp (Cyprinus carpio L.)

2013 ◽  
Vol 122 ◽  
pp. 120-128 ◽  
Author(s):  
Peter H.M. Klaren ◽  
Stephanie C.M. van Dalen ◽  
Wim Atsma ◽  
F.A. Tom Spanings ◽  
Jasper Hendriks ◽  
...  
Keyword(s):  
Weight Gain ◽  
Food Intake ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Plasma Cortisol ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Basal Plasma ◽  
Cortisol Levels

scholarly journals Stress responsiveness of the pituitary-interrenal axis during early life stages of common carp (Cyprinus carpio)

1998 ◽  
Vol 157 (1) ◽  
pp. 127-137 ◽  
Author(s):  
AJ Stouthart ◽  
EC Lucassen ◽  
FJ van Strien ◽  
PH Balm ◽  
RA Lock ◽  
...  
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Whole Body ◽  
Mechanical Pressure ◽  
Stage Of Development ◽  
Endogenous Production ◽  
Common Carp Cyprinus Carpio ◽  
Prohormone Processing ◽  
Carp Cyprinus Carpio ◽  
Cortisol Levels

Whole-body levels of ACTH, alpha-MSH and cortisol in eggs and larvae of the common carp (Cyprinus carpio) were determined periodically up until 168 h after fertilisation. ACTH, alpha-MSH and cortisol immunoreactivity was detected in unfertilised eggs, and endogenous production of ACTH and alpha-MSH was observed 24 h after fertilisation and that of cortisol 36 h after fertilisation. ACTH immunoreactivity reached peak levels before hatching (56-72 h after fertilisation) and remained relatively stable thereafter, while alpha-MSH immunoreactivity started to increase after hatching. At 36 h after fertilisation, whole-body cortisol levels increased rapidly reaching peak levels at the end of hatching (72 h after fertilisation), remaining stable until the end of the experiment. From 50 h after fertilisation onwards, embryos and larvae increased their whole-body cortisol levels when subjected to handling (mechanical pressure during egg stage or netting during the larval stage). It is concluded that the pituitary-interrenal axis in carp is fully functional at the time of hatching. No indications of a stress non-responsive period after hatching were observed. To characterise ACTH and alpha-MSH immunoreactivities in carp larvae, whole-body homogenates were analysed by HPLC, with pituitary homogenates of adult carp serving as a reference. ACTH and alpha-MSH immunoreactivity in carp larvae homogenates consisted of three and two products respectively. HPLC of adult carp pituitaries revealed the presence of two ACTH immunoreactive products, which may represent a phosphorylated and a non-phosphorylated ACTH variant, while the three alpha-MSH peaks most likely represent des-acetylated, mono-acetylated and di-acetylated alpha-MSH, the latter being the predominant form. In carp larvae, however, one of the ACTH immunoreactive products co-eluted with the non-phosphorylated ACTH, while the two alpha-MSH products identified co-eluted with des-acetylated and mono-acetylated alpha-MSH, indicating that POMC processing at this stage of development is different from prohormone processing in adult fish.

scholarly journals Effect of dietary supplementation of selenium nanoparticles on growth performance and nutrient digestibility of common carp (Cyprinus carpio Linnaeus 1758) fingerlings fed sunflower meal based diet

2019 ◽  
Vol 66 (3) ◽  
Author(s):  
Syed Makhdoom Hussain ◽  
Anam Khalid ◽  
Muhammad Mudassar Shahzad ◽  
Azhar Rasul ◽  
Afia Muhammad Akram ◽  
...  
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Crude Protein ◽  
Nutrient Digestibility ◽  
Sunflower Meal ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Gross Energy

Sunflower meal based diet supplemented with selenium nanoparticles (Se NPs) atlevels of 0, 1, 2, 3, 4 and 5 mg kg-1 were fed common carp (Cyprinus carpio Linnaeus 1758) fingerlings in a seventy days feeding trial, to examine the effects on growth, nutrient digestibility and heamatology. Triplicate tanks were used and each tank contained 15 fingerlings that were subjected to experimental feeding at 4% of their live wet weight. A non-digestible marker, chromic oxide was added in the feed at 1% level. Growth performance in terms of weight gain %, feed conversion ratio (FCR) and specific growth rate (SGR) as well as nutrient digestibility (crude protein, crude fat, gross energy) were estimated following standard methods/standard formulae. Maximum weight gain% (210%), SGR (1.26) and best FCR (1.26) as well as highest nutrient digestibility (crude protein 71%, crude fat 72% and gross energy 70%) were observed in fish fed test diet III supplemented with 2 mg kg-1 Se NPs These results showed that, Se nanoparticles supplementation at the rate of 2 mg kg-1 level is beneficial for improvement of growth in C. carpio fingerlings.

scholarly journals Increased Leptin Expression in Common Carp (Cyprinus carpio) after Food Intake But Not after Fasting or Feeding to Satiation

Endocrinology ◽  
2006 ◽  
Vol 147 (12) ◽  
pp. 5786-5797 ◽  
Author(s):  
Mark O. Huising ◽  
Edwin J. W. Geven ◽  
Corine P. Kruiswijk ◽  
Sander B. Nabuurs ◽  
Ellen H. Stolte ◽  
...  
Keyword(s):  
Food Intake ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Leptin Expression
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