Growth and Survival Performance of Labeo rohita Fingerlings under Temperature Gradients
M. Sathiamoorthi *
Department of Animal Science, Manonmaniam Sundaranar University, Tirunelveli-627012, Tamil Nadu, India.
*Author to whom correspondence should be addressed.
Abstract
Worldwide heating is expected to affect the aquatic environment and aquaculture industry. In the current experiment, we have observed growth and water quality of Indian major carp (Labeo rohita) exposed to three different temperature regimes, 28°C, 30°C, and 32°C on the growth and development of L. rohita fingerlings housed in aquariums for 31 days were examined. The fish were given pelletized food continuously. Fish kept in water at 32°C grew significantly (P<0.05) more rapidly (SGR and FCR) than fish kept at other temperatures. This simple growth model produced a consistent growth (SGR 2.27%/day) between 28 and 32°C. At 30 to 32°C, the highest body weight increase and lowest feed conversion ratio (FCR) were observed 30 to 32°C was shown to have the highest specific growth rate. A temperature rise of around 28 °C is optimum, with 30 °C and 32 °C being the ideal range for manufacturing. Survival rate 100.00±0.00, 100.0±0.00 and 100.0±0.00. This further implies that suitable measures must be implemented to maintain the optimal temperature in aquaculture farms in order to avert the adverse consequences of climate change.
Keywords: Aquaculture, environmental temperature, Labeo rohita, survival, growth