We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of dietary protein-to-energy ratio on reproduction in female redclaw crayfish Cherax quadricarinatus.
- Authors
Rodríguez-González, Hervey; Villarreal, Humberto; Hernández-Llamas, Alfredo; García-Ulloa, Manuel; Vázquez-Boucard, Celia; Serrano-Pinto, Vania
- Abstract
The effect of eight diets with different protein-to-energy ratios (P-E ratio=10, 11, 14, 16, 18, 20, 22, 24 mg kJ−1) on reproduction of female redclaw crayfish Cherax quadricarinatus was tested under laboratory conditions. After 75 days, there was a significant effect of the P-E ratio on final weight, spawning females and the number of juveniles per female. Using the broken-line and quadratic equations, optimal values for the P-E ratio were: 16.0, 17.1 and 16.0 mg kJ−1. The P-E ratio significantly affected protein and carbohydrate content and energy in the hepatopancreas. The broken-line model indicated that the respective recommended values of the P-E ratio for these parameters were: 21.8, 16.7 and 18.6 mg kJ−1. The concentration of carbohydrates and energy in muscle tended to significantly diminish as the P-E ratio increased. From broken-line regression analysis, the recommended P-E ratio was 16.6 and 20.2 mg kJ−1 respectively. No significant differences were found in survival, fecundity, vitellin content in eggs, protein and lipid content in muscle and lipids in the hepatopancreas. We concluded that, overall, a P-E ratio of 18±2 mg kJ−1 is optimal for reproductive activity of female redclaw crayfish.
- Subjects
LOW-protein diet; CRAYFISH; CHERAX; SPAWNING; FISH weight; QUADRATIC equations; REPRODUCTION
- Publication
Aquaculture Research, 2011, Vol 42, Issue 12, p1840
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/j.1365-2109.2010.02787.x