M Saeed Heydarnejad

Title : Survival and growth of common carp (cyprinus carpio l) exposed to different water ph levels

Abstract:

The aim of the present study was to examine the survival and growth performance of common carp (Cyprinus carpio L.) in water with different pH values. Carp (17.8 ± 1.21 cm; 52.14 ± 7.13 g) were transferred to 21 tanks previously adjusted with 7 different pH values: 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, and 9.0. Each value had 3 replicates, and all experiments lasted for 21 days. The survival and growth of carp were assessed at days 7, 14, and 21. At the end of the 21 days, greater weight, length, survival, and biomass were found for pH values of 7.5 and 8.0. The coefficient variations of weight were significantly different among the treatments. The results suggest that the best range for the survival and growth of carp is pH 7.5-8.0.

Audience Take Away Notes:

• The importance of pH in good fish production
• Common carp as one of the most widely cultured species in the world
• pH variations may control the modulation of enzyme activity under physiological and pathological conditions
• An increase or decrease in pH disturbs the acid-base balance, ion regulation, and ammonia excretion
• Growth parameters of carp increase as water pH increases from 6.0 to 8.0, and the best growth performance occurs at water pH 7.5-8.0.

Biography:

Dr. M. Saeed Heydarnejad (PhD, Australia), currently at the University of Shahrekord working as a member of academic staff and associate professor. He graduated from Tasmania University (Australia) in the Aquaculture area (2006) and interested in fish behavior. He is one of the elites of the country and the first rank of the university, who has more than 100 articles and conferences and has guided more than 40 graduate students. He is very interested in aquaculture and wishes to have international relations.