Effect of feeding management of broodstock on breeding performance of bata (Labeo bata)
Keywords:effect, feeding management, broodstock, breeding performance, bata
Labeo bata is one of the important minor carps in Bangladesh with great demand as good table fish. The study was conducted to observe the breeding performance at different management practices in Mafatema, Rupali, Modhumoti and Anan fish hatchery and disinfection treatments of water, eggs and fry in Jessore, Bangladesh during 10 March 2014 to 15 May 2015. An improvement in broodstock nutrition and feeding has been shown to greatly improve seed production. Protein and lipid percentage of broodstock diet have been identified as major dietary factors. Protein level was 24.77%, 23.47%, 18.08%, 17.78% and lipid level was 11.07%, 9.50%, 7.74%, 8.14% in Mafatema, Rupali, Modhumoti and Anan fish hatchery respectively. Three concentrations of four chemical-formalin (10, 20, 30 mg/L), malachite green (1, 3, 5 mg/L), NaCl (1, 2, 3 g/L) and methylene blue ( 1, 3, 5 mg/L) treatment regimes and a control were compared for efficacy in treating L. bata eggs to prevent fungus and bacterial infection and improve hatch and survival rate of fry. Highest correlation value between absolute fecundity and body weight (r=.938, p<.05) and total length (r=.891, p<.05) and gonadosomatic index (26.2%) were found in Mafatema fish hatchery among four experimental hatcheries at 24.77% protein and 11.07% lipid level. Better fertilization rate (84.2±5.17%) and hatching rate (82.0±4.30%) were found in Mafatema and Rupali fish hatchery respectively that has significant difference (P<0.05) from that of Modhumoti and Anan fish hatchery at higher protein and lipid level. Lowest deformity rate (6.05+2.65) was observed in Mafatema fish hatchery that was significantly different (P<0.05) from that of Modhumoti fish hatchery. In case of disinfection treatment, methylene blue at 1mg/L bath treatment daily for 4 days showed significantly higher hatching rate (92.33±3.51%) and survival rate (94.33±4.73%).
Asian J. Med. Biol. Res. December 2015, 1(3): 553-568
How to Cite
Authors who publish with this journal agree to the following terms / The author(s) affirm(s) that:
- The manuscript submitted is based on authors own research and is original work.
- Authors certify that we all participated in the research work and preparation of the manuscript in a substantive way.
- Authors also declare that they have read and approved the manuscript.
- Authors further declare that the manuscript has not been published in part or full and is not being submitted or considered for publication in part or full elsewhere.
- Any material included in the manuscript does not violate copyright or other rights of anyone.
- Authors also affirm that the article contains no vilifying or unlawful statements and does not contain material or instructions that might cause harm or injury to the Editor-in-Chief/Editors of the Journal and the public.
- Authors assure Asian J. Med. Biol. Res. and the Editor-in-Chief/Editors of the Journals, and hold them harmless from any loss, expense or damage occurred by a claim or suit by a third party for copyright violation, or any suit arising out of any violation of the foregoing warranties as a result of publication of my/our article.
- In consideration of authors manuscript submitted, authors hereby grant Asian J. Med. Biol. Res. unlimited, worldwide, permanent royalty-free, right to publish, use, dispense, license, transmit, display, exhibit, record, store, translate, digitize, broadcast, reproduce and archive, in any format or medium, whether now known or developed hereafter.
All materials related to manuscripts, accepted or rejected, including photographs, original figures etc., will be kept by Asian J. Med. Biol. Res. for one year following the editors decision. These materials will then be destroyed.