首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Dietary lipid influences gonadal maturation,digestive enzymes and serum biochemical indices of Cyprinus carpio reared in biofloc system
Authors:Peer Saba Manzoor  Kiran Dube Rawat  Virendra Kumar Tiwari  Nalini Poojary  Babitha Rani Asanaru Majeedkutty
Abstract:An experiment was conducted for 120 days to evaluate optimum dietary lipid requirements for gonadal maturation of Cyprinus carpio fed with varying dietary lipid levels under biofloc‐based systems (BFT). About 180 fingerlings (22 g ± 0.05) were randomly distributed in 15 tanks (300 L) at the rate of 48 no./m2 and fed with varying lipid levels (T1—4% lipid with BFT, T2—6% lipid with BFT, T3—8% lipid with BFT, T4—10% lipid with BFT, control—10% lipid without BFT). The C/N ratio of 20:1 was maintained using tapioca flour as carbon source. Biofloc units supplemented with 8% dietary lipid (T3) showed advanced maturation in terms of absolute fecundity (9,913 ± 7.62), relative fecundity (229.0/g ± 11.92), gonadosomatic index (24.47% ± 1.27), hepatosomatic index (1.97% ± 0.07), condition factor (0.02 g/cm3 ± 0.00) compared with control (clear water with 10% lipid) (p < .05). Histological observations of gonads also revealed that the biofloc groups with supplementation of 8% dietary lipid promoted gonadal maturation for female oocyte and 6% dietary lipid promoted maturation for males, compared with control (clear water with 10% lipid). The results obtained in this experiment elucidate that the biofloc improves gonadal maturation of common carp broodstock at a dietary supplementation with 8% lipid compared with conventional system of broodstock management.
Keywords:biofloc technology  common carp  dietary lipid  histology  maturation
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号