Biological Performance in Black Fin Seabream, Acanthopagrus berda (Forsskal, 1775) by Using Two Different Protein-Based Diets in Seawater Earthen Ponds
Biological Performance in Black Fin Seabream, Acanthopagrus berda (Forsskal, 1775) by Using Two Different Protein-Based Diets in Seawater Earthen Ponds
Sajid Ali1, Ghulam Abbas1, Shahnaz Rashid1, Asma Fatima1*, Abdul Malik1, Dilawer Ali1, Muneer Hussain Bijoro1, Ushra Batool Hashmi1, Rumaisa Abdul Rahim1, Shahid Hussain2, Kashif Ali3, Jabbar Memon4 and Javeria Khourshid1
ABSTRACT
This research focuses on the biological performance in blackfin seabream, Acanthopagrus berda (Forsskal, 1775) by using different protein-containing diet i.e., soybean meal and fishmeal. The dietary efficacy was monitored in seawater earthen ponds designated into four nylon meshed hapa (3.7×9.5×9.5 feet) for 60 days. Juveniles (35.75±3.2g) were collected with the help of cast net from Sakro creek and transferred into the earthen fish ponds located at Garho, Thatta, Sindh. Juveniles were acclimatized for more than two weeks (15 days) to the experiment conditions. After acclimatization period, juveniles (n=15) were distributed into each treatment hapa (T1 and T2) with two replicates. Two iso-nitrogenous diets were prepared consisting of Diet-1 soybean meal was used as main source and Diet-2 consist of fishmeal. Feed was given twice daily by 3% of total wet body weight. Results indicated a slightly higher weight gain (WG) in T2 (44.6±0.42g) than T1 (41.6±0.49g). The condition factor was non-significant (p ˃ 0.05) among both treatment groups, whereas, food conversion ratio was significantly different (p<0.05). No mortality was observed (100% survival ratio) in both treatments. Relative growth of black fin seabream juveniles (A. berda) remained significantly different while regression values were found to be non-significant (P>0.05; R2= 0.95) among both treatments. The physiochemical parameters of seawater ponds were found in the optimum range throughout the trial period. Therefore, it is suggested that soybean meal can be replaced and used as an alternative cost-effective source of fishmeal in the fish diet.
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