Ahalavat, ShikhaPooja Rani2022-01-192022-01-192021https://krishikosh.egranth.ac.in/handle/1/5810181020Efficacy of different dietary protein sources on the growth performance and carcass composition of common carp, Cyprinus carpio L. was evaluated in a 90 days of experimental period. Nine distinct types of feed ingredients with different protein content in Rice bran (RB) 12.70%, Mustard oil cake (MOC) 35.10%, Soyabean meal (SM) 44.75% and Fish meal (FM) 46.24% respectively were taken. All the feed stuffs were formulated as T1 (RB+MOC), T2 (RB+28% SM), T3 (RB+32% SM), T4 (RB+36% SM), T5 (RB+40% SM), T6 (RB+28% FM), T7 (RB+32% FM), T8 (RB+36% FM) and T9 (RB+40% FM) using Pearson square method. Twenty-seven uniformly sized experimental aquaria of 60*30*30 cm3 size taken in triplicate for each treatment were used. C. carpio L. experiment was started with fingerlings having an average weight and length of (1.71g) and (2.69cm) respectively. The growth rate of C. carpio was maximum for T9 (RB+40% FM) (15.52 g) followed by T5 (RB+40% SM) (15.16 g) however no significant difference was recorded between these two treatments. Body weight after 90 days was in order T9 (RB+40%FM) followed by T5 (RB+40% SM), T4 (RB+36% SM) and T8 (RB+36% FM), T7 (RB+32% FM) and T3 (RB+32% SM), T2 (RB+28% SM) and T6 (RB+28% FM) minimum in T1 (RB+MOC). The lowest FCR was obtained from T9 (1.42) and highest in T1 (1.70). Economics of feed containing 40% dietary protein of soyabean meal (Rs.0.047/g) was considered better than all the other diets including control diet T1 (RB+MOC) (Rs. 0.087/g). Moisture, crude fibre and crude lipid were in decreasing trend as the dietary proteins increased. However, carcass protein content was in increasing trend as protein percentage in feed increase. After 90 days of feeding trial, percentage of protein was ranged from 66.88% in T1 (RB+MOC) to 69.42% in T5 (RB+40% SM). The water quality parameters (pH, temperature, dissolved oxygen, total alkalinity, total hardness, conductivity, total dissolved solids) monitored during the experimental period showed that they were well within conductive limits and no significant (p<0.05) difference observed between them except ammonia and nitrite. Ammonia (0.20ppm) and nitrite (0.12 ppm) concentration was highest in T1 (RB+MOC). From the present study it can be concluded that fish meal and soyabean meal have similar efficacy on growth performance and carcass composition without affecting survivality and water parameters in C. carpio fingerlings.EnglishThesis