Amelioration of growth, blood physiology and water quality by exogenous dietary supplementation of pepsin in striped catfish, Pangasianodon hypophthalmus

Aquaculture ◽  
2021 ◽  
Vol 530 ◽  
pp. 735840
Author(s):  
Md Moudud Islam ◽  
Zenia Ferdous ◽  
Md. Main Uddin Mamun ◽  
Fatema Akhter ◽  
Md. Mahiuddin Zahangir
Author(s):  
Monica Naomi ◽  
Zahidah Hasan ◽  
. Sumadi ◽  
Herman Hamdani ◽  
Yuli Andriani ◽  
...  

This study aims to determine the growth of Striped Catfish fingerlings (Pangasianodon hypophthalmus) and using Fine Bubbles (FBs) application with various pressures in the aquaponic system. The study was conducted at the Laboratory of Aquaculture, Ciparanje, Faculty of Fisheries and Marine Sciences, Padjadjaran University from 18th September to 18th October 2019. The method used in this study was the experimental method using Completely Randomized Design (CRD) with four treatments and three replicates. Treatment A: Control (without FBs), Treatment B: FBs with pressure 4.5 atm, Treatment C: FBs with pressure 5 atm, and Treatment D: FBs with pressure 5.5 atm. This research used water spinach as biofilter. The measured parameters in this study were fish growth, plant productivity, and water quality which includes levels of temperature, dissolved oxygen, nitrate, ammonia and phosphate. The results showed that the highest fish specific growth rate in treatment D is 6.68 ± 0.43%/day with a survival rate of 100 ± 0.00%, the highest plant productivity, with a stem length of 115.03 cm, a weight of 62.75 g, and leaf growth of 30 strands. While the water quality parameters including temperature, dissolved oxygen concentrations ranged from 24.2-27°C, 7.72-7.94 mg / l, nitrate 0.243-0.602 mg /, ammonia 0.001-0.010 mg / l and  phosphate 0.147-0.229 mg / l respectively.


2018 ◽  
Vol 10 (1) ◽  
pp. 16-21
Author(s):  
Xuan Thinh Le ◽  
Xuan Hien Dang ◽  
Ngoc Trinh Truong

Striped catfish (Pangasianodon hypophthalmus) is freshwater fish that is raising mainly in the Mekong Delta. The research was implemented at the Model Farm (College of Aquaculture and Fisheries), Can Tho University during 6 months from May to November of 2016 and aimed to evaluate the water quality between two treatments of feed in the pangasius production for proposing a better environmental management method. The treatment 1 (control treatment, CT) has two ponds used feed without adding phytase and treatment 2 (experiment treatment, ET) includes two ponds used feed with adding phytase. The results showed that the temperature, pH, DO, TSS, COD, BOD, N-NO2-, N-NO3-, TKN, TAN were not significantly different (p>0.05) between the CT and ET ponds. At the experiment pond (EP), the factors (TP: 2.28 mg/L; P-PO43-: 1.24 mg/L) which has P release to the environment are less than control pond (CP) (TP: 2.62 mg/L; P-PO43-: 2.13 mg/L). These results suggested that the addition of phytase in feed could contribute to reducing the nutrient to the water body of pangasius pond. Cá tra (Pangasianodon hypophthalmus) là loài thủy sản nước ngọt được nuôi chủ yếu ở các tỉnh Đồng bằng sông Cửu Long. Nghiên cứu được thực hiện trong 6 tháng từ tháng 05 – 11/2016 tại Trang trại mẫu đặt tại Khoa Thủy sản, Trường Đại học Cần Thơ nhằm đánh giá chất lượng nước giữa 2 nghiệm thức thức ăn trong giai đoạn nuôi cá thịt để đề xuất biện pháp quản lý chất lượng nước ao nuôi tốt hơn. Nghiệm thức 1 (nghiệm thức đối chứng, CT) gồm 2 ao nuôi sử dụng thức ăn không bổ sung enzyme phytase, nghiệm thức 2 (nghiệm thức thí nghiệm, ET) gồm 2 ao nuôi sử dụng thức ăn có bổ sung enzyme phytase. Kết quả thí nghiệm cho thấy giá trị nhiệt độ, pH, DO, TSS, COD, BOD, H2S, N-NO2-, N-NO3-, TKN, TAN ở mức phù hợp cho ao đối chứng (CT). Tại ao thí nghiệm (ET) (TP:2,28 mg/L; P-PO43-: 1,24 mg/L) lượng P thải ra ít hơn so với ao CT (TP: 2,62 mg/L; P-PO43-: 2,13 mg/L) chứng tỏ việc bổ sung enzyme phytase trong thức ăn đã góp phần làm giảm lượng lân thải ra môi trường nước trong nuôi cá tra.


Aquaculture ◽  
2021 ◽  
pp. 737446
Author(s):  
Zhuo-hao Ruan ◽  
Liang-sen Jiang ◽  
Yi-fu Li ◽  
Zhi-qiang Lu ◽  
Xian-can Chen ◽  
...  

2017 ◽  
Vol 24 (1) ◽  
pp. 616-624 ◽  
Author(s):  
N. Daniel ◽  
A.P. Muralidhar ◽  
P.P. Srivastava ◽  
K.K. Jain ◽  
K. Pani Prasad ◽  
...  

Aquaculture ◽  
2010 ◽  
Vol 306 (1-4) ◽  
pp. 92-100 ◽  
Author(s):  
Tam M. Bui ◽  
Lam T. Phan ◽  
Brett A. Ingram ◽  
Thuy T.T. Nguyen ◽  
Geoff J. Gooley ◽  
...  

2021 ◽  
Vol 20 (1) ◽  
pp. 61-72
Author(s):  
Thawanrat Puttipong ◽  
◽  
Sinlapachai Senarat ◽  
Jes Kettratad ◽  
Chitchai Chantangsi ◽  
...  

Khlong Saen Saep is one of the most important and large canal systems in Bangkok, Thailand. However, the emergence of heavily polluted water has occasionally been reported due to the domestic sewage and industrial effluents discharged into the system. This situation may affect the reproductive status of aquatic lives residing in this canal. To evaluate the reproductive status of the canal inhabitant, the striped catfish Pangasianodon hypophthalmus (Sauvage, 1878)—a common dweller of the Saen Saep Canal—was collected from two selected stations, the Bumpen Nua Temple and the Kamalun Islam Mosque. The fish gonads were then anatomically and histologically examined. The results indicated that neither parasites nor ovary with external abnormality were found. Nevertheless, several histological alterations were detected, including vacuolar degeneration of previtellogenic oocytes, accumulation of melanomacrophage centers (MMCs), and atretic oocytes. Moreover, severe histopathological changes, such as the eosinophilic cytoplasm of spermatogonia, MMCs, blood congestion, and syncytium of spermatozoa, were observed in the fish testis. Our study suggested that the environmental stress and pollutions previously reported from the Saen Saep Canal possibly underpin the gonadal impairments of P. hypophthalmus examined and may have adverse impact on the reproductive health of others living in this canal system


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