17 M. M. Shahzad F. Khalid S. M. Hussain M. Hussain Z. Hussain R. A. Rehman M. Y. Zahoor Journal of Animal and Plant Sciences JAPS 20232023/02/22 33 1 211-219 1018-7081 https://doi.org/10.36899/JAPS.2023.1.0611 <p>In intensive culture fish cannot digest the plant-based diets properly and negatively affects their overall performance. Addition of organic acids in plant-based diets and their salts improves the performance of&nbsp;<em>C. carpio</em>. Current research was conducted to estimate the influences of dietary Tau addition in linseed meal-based diet on growth, hematological indices and carcass composition of common carp fingerlings.&nbsp;<em>C. carpio</em>&nbsp;fingerlings were fed (@4% of live wet body weight) on linseed meal-based diet supplemented with graded levels (0, 2, 4, 6, 8 and 10 gkg^-1) of dietary taurine for 60 days. The linseed meal-based diets were given to triplicate groups of fish fingerlings (6.22 g average initial body weight) twice a day. Fish fed with linseed meal supplemented with Tau at 4gkg^-1&nbsp;indicated maximum retention of CHO, CP as well as gross energy as compared to fish in control treatment. Growth performance of fish was significantly improved (<em>p</em>&lt;0.05) by dietary Tau up to optimal level of 4gkg^-1, after which a noticeable decline in fish growth was observed due to poor retention of various essential nutrients and minerals while, EE absorption was maximum at 6gkg^-1&nbsp;diet. Maximum weight gain (18.31) and survival (97.78) were found maximum at 4gkg^-1&nbsp;level based diet. Similarly, best values of various hematological indices i.e., RBCs, Hb, PCV, MCHC, MCH were also found at 4gkg^-1&nbsp;diet. These results indicate that the taurine supplementation at 4gkg^-1&nbsp;level is most suitable for highest fish performance as well as its ability to combat various pathogens.</p> Cyprinus carpio, Linseed meal, Taurine, growth performance, whole body composition, hematology Pakistan Agricultural Scientists Forum https://thejaps.org.pk/AbstractView.aspx?mid=Fish-21-0004