Effect of four rearing water temperatures on some performance parameters of larval and juvenile crucian carp,Carassius carassius, under controlled conditions

Abstract

The performance of larvae and juveniles of the crucian carp, Carassius carassius, held at temperatures of 22, 25, 28 and 31°C was evaluated in terms of growth, survival and, only in juveniles, haematological indices. The best growth in both larvae and juveniles was recorded at 28°C (relative growth rate (RGR) of 27.52% and 3.50%/day, respectively). The highest final survival rates were found at temperatures of 25–28°C, exceeding 99% in larvae and equal to 100% in juveniles. Haematopoietic activity and leucocyte count were significantly disturbed at temperatures of 28 and 31°C. These temperatures were stressing to the juveniles, as shown by the lymphopaenia and neutrophilia found in their peripheral blood and haematopoietic kidney. Thus, the optimum temperature for growth of larval and juvenile crucian carp is close to 28°C. However, stress indicators found at this temperature in juvenile fish strongly suggest that the most favourable temperature range for long‐term rearing is below 28°C and near to 25°C.

Nuclear and Cellular Abnormalities of Erythrocytes in Response to Thermal Stress in Common Carp Cyprinus carpio

“…Significant increase of WBC content in the highest temperature (35 • C) in the present investigation indicated that fish exhibited stress responses at this temperature. Leukocyte counts have been increased in the crucian carp exposed to the higher temperature (Sikorska et al, 2018) is good agreement with our results. These increase of WBC content might be due to the production of higher antibody (Raphael and Kuttan, 2003), a remedial response during exposure to stressed environments (Begg and Pankhurst, 2004;Beyea et al, 2005).…”

“…This is surprisingly supported by the increased numbers of Ebs in the blood cells of fish exposed to higher temperature ( Table 2). Hematopoietic system has been disturbed in the crucian carp (Carassius carassius) exposed to higher temperature (Sikorska et al, 2018). The higher temperature also altered the morphology (nuclear and cellular) of erythrocytes in the current investigation.…”

Elevated temperature affects growth and hemato‐biochemical parameters, inducing morphological abnormalities of erythrocytes in Nile tilapiaOreochromis niloticus

“…The substantial rise in WBC content at the acclimation temperature of (37°C) recorded in the present study suggests increased antibody production to mediate adaptation to stressed conditions (Shahjahan et al., 2018). High temperature increased leucocyte counts in the crucian carp (Sikorska et al., 2018), and common carp (Shahjahan et al., 2020) is good agreement with our results.…”

“…RBC and Hb levels are significantly reduced in response to elevated temperatures. Similar results were observed in the crucian carp ( Carassius carassius ) exposed to higher temperature (Sikorska et al., 2018). Specific responses of fish to high temperature stress are highly species‐dependent, varying substantially with the exposure time and the adaptative capability of species.…”

Effects of dietary fermentation products of kitchen waste on growth, apparent digestibility, digestive enzyme activities and serum biochemistry in juvenile allogynogenetic gibel carp (Carassius auratus gibelio) var. CAS III

“…The high FCR of fish could be attributed to two factors that include differences in terms of water temperature and growth rhythm. This experiment was conducted in autumn and winter, the maximum water temperature could only be controlled at about 20 C during the cultivation period, and the optimum culture temperature for allogynogenetic gibel carp was 25 $ 30 C, so the feed utilization was relatively low (Justyna et al, 2018).…”