scholarly journals Effect of adding microalgae to whiteleg shrimp culture on water quality, shrimp development and yield

2022 ◽  
Vol 22 ◽  
pp. 100916
Author(s):  
Chen Huang ◽  
Yuanyuan Luo ◽  
Guoquan Zeng ◽  
Penglong Zhang ◽  
Ruibing Peng ◽  
...  
Keyword(s):  
Water Quality ◽  
Shrimp Culture ◽  
Whiteleg Shrimp

scholarly journals Effects of Supplement of Marichromatium gracile YL28 on Water Quality and Microbial Structures in Shrimp Mariculture Ecosystems

Genes ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 40
Author(s):  
Liang Cui ◽  
Bitong Zhu ◽  
Xiaobo Zhang ◽  
Zhuhua Chan ◽  
Chungui Zhao ◽  
...  
Keyword(s):  
Water Quality ◽  
16S Rrna ◽  
Relative Abundance ◽  
Animal Health ◽  
Denitrifying Bacteria ◽  
Nitrite Reduction ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Sequencing Analysis ◽  
Shrimp Culture

The elevated NH3-N and NO2-N pollution problems in mariculture have raised concerns because they pose threats to animal health and coastal and offshore environments. Supplement of Marichromatium gracile YL28 (YL28) into polluted shrimp rearing water and sediment significantly decreased ammonia and nitrite concentrations, showing that YL28 functioned as a novel safe marine probiotic in the shrimp culture industry. The diversity of aquatic bacteria in the shrimp mariculture ecosystems was studied by sequencing the V4 region of 16S rRNA genes, with respect to additions of YL28 at the low and high concentrations. It was revealed by 16S rRNA sequencing analysis that Proteobacteria, Planctomycete and Bacteroidetes dominated the community (>80% of operational taxonomic units (OTUs)). Up to 41.6% of the predominant bacterial members were placed in the classes Gammaproteobacteria (14%), Deltaproteobacteria (14%), Planctomycetacia (8%) and Alphaproteobacteria (5.6%) while 40% of OTUs belonged to unclassified ones or others, indicating that the considerable bacterial populations were novel in our shrimp mariculture. Bacterial communities were similar between YL28 supplements and control groups (without addition of YL28) revealed by the β-diversity using PCoA, demonstrating that the additions of YL28 did not disturb the microbiota in shrimp mariculture ecosystems. Instead, the addition of YL28 increased the relative abundance of ammonia-oxidizing and denitrifying bacteria. The quantitative PCR analysis further showed that key genes including nifH and amoA involved in nitrification and nitrate or nitrite reduction significantly increased with YL28 supplementation (p < 0.05). The supplement of YL28 decreased the relative abundance of potential pathogen Vibrio. Together, our studies showed that supplement of YL28 improved the water quality by increasing the relative abundance of ammonia-oxidizing and denitrifying bacteria while the microbial community structure persisted in shrimp mariculture ecosystems.

scholarly journals The Influence of Giving Probiotic with Different Periodicon Decreasing of Ammonia And Total Organic Matter in White Shrimp Culture Media (Litopenaeus Vannamei)

2020 ◽  
Vol 7 (2) ◽  
pp. 68
Author(s):  
Vega Chrisnawati ◽  
Boedi Setya Rahardja ◽  
Woro Hastuti Satyantini
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Research Method ◽  
Culture Media ◽  
Quality Parameters ◽  
White Shrimp ◽  
Total Organic Matter ◽  
Ammonia Content ◽  
Shrimp Culture ◽  
Key Factor

Water quality is a major factor in shrimp culture so maintenance that water quality system is the key factor of success of white shrimp culture. This research was conducted to determine the commercial probiotic on white shrimp (L. vannamei) culture media to decrease ammonia content and TOM. Research method used experimental testwithdifferent type of probiotic and giving periodic which are P0 (without probiotic). Probiotic A; P1 (3 days), P2 (5 days) and P3 (7 days). Probiotic B; P4 (3 days), P5 (5 days) and P6 (7 days). Probiotic C; P7 (3 days), P8 (5 days) and P9 (7 days).The results showed that probiotic bacteria influence the content of ammonia and total organic matter culture media of white shrimp. The lowest ammonia obtained in P4 (Probiotic B 3 days) is 0.05 mg/L and TOM is 53,72 mg/L in last week.The highest ammoniaand TOM in P0 (Control). All treatments with addition of probiotic give lowers ammonia in culture media. Survival Rate (SR) in P4 give significantly different results (P <0.05) to P0. Other water quality parameters measured during maintenance among other 27-30oC temperature, pH 7.0 to 7.9, Dissolved Oxygen (DO) from 3.1 to 7.6 mg/l and 15-19 ppt salinity.

scholarly journals Autonomous water-cleaning machine using solar energy in shrimp ponds

2012 ◽  
Vol 3 (1) ◽  
pp. 30-33
Author(s):  
Thien Ngon Dang
Keyword(s):  
Water Quality ◽  
Water Exchange ◽  
Water Quality Management ◽  
Shrimp Farming ◽  
Coliform Bacteria ◽  
Viet Nam ◽  
Shrimp Culture ◽  
Shrimp Ponds ◽  
Water Cleaning ◽  
Cleaning Machine

Limited water exchange shrimp culture technology is commonly used today in many shrimp farms in Vietnam to reduce water usage, input of diseases and discharge of nutrient-rich effluents into environment as well as to increase the production per unit area. However, a remaining problem in this technology is that the water quality in shrimp ponds will be reduced due to limitation of water exchange for a long period. The accumulation of inorganic components such as waste feed, bacterial deposits or other biological debris at the pond bottom will lead to low dissolved oxygen, high ammonia-nitrogen level, high fecal coliform bacteria and high turbidity which cause a severe degradation of water quality and detriment to shrimp growth and survival. To solve this remaining problem, an autonomous water-cleaning machine for shrimp ponds was designed to control the waste accumulation in the pond. This is an effective solution to replace manual cleaning methods for water quality management in shrimp farming in the coastal area of the Mekong delta of Vietnam. Especially, this technique can be used for biosecure shrimp production systems according to GMP standards to meet the objectives for sustainable development of shrimp aquaculture in Vietnam. Kỹ thuật nuôi tôm không thay nước đang được sử dụng rộng rãi ở các trại nuôi tôm Việt Nam vì giúp giảm lượng nước sử dụng, hạn chế thải nước vào môi trường và giúp tăng diện tích nuôi trồng tôm. Tuy nhiên, bản thân kỹ thuật này cũng tạo nên một sản phẩm chất thải là phân tôm, thức ăn và chế phẩm sinh học xử lý nước dư thừa. Chất thải này dần dần tích tụ dưới đáy ao tạo thành lớp bùn độc, rất thiếu ôxy và chứa nhiều chất gây hại như ammonia, nitrite, hydrogen sul-fide. Để tránh làm giảm diện tích ao nuôi do chất thải tích tụ làm tôm lảng tránh và tăng mật độ tôm nuôi trồng, thiết bị tự hành thu gom chất thải làm sạch nước trong vuông nuôi tôm đã được nghiên cứu, thiết kế và chế tạo thành công. Thiết bị đã thay thế các hoạt động làm sạch chất thải thủ công của con người, không sử dụng các nguồn năng lượng gây ô nhiễm, giảm nhu cầu về điện góp phần phát triển sản xuất tôm sạch đạt chuẩn GMP và phát triển bền vững ở các tỉnh ven biển miền Tây Việt Nam.

scholarly journals PENGENALAN PENGGUNAAN BIOFILTER SEBAGAI UPAYA MENGATASI PENCEMARAN BAHAN ORGANIK DI PERAIRAN TAMBAK DI KELURAHAN LAKKANG, KOTA MAKASSAR

2020 ◽  
Vol 4 (1) ◽  
pp. 119
Author(s):  
Nita Rukminasari ◽  
Nadiarti Nurdin ◽  
Khusnul Yaqin ◽  
Moh. Tauhid Umar ◽  
Irmawati Irmawati ◽  
...  
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Organic Pollutant ◽  
Water Source ◽  
Fish Pond ◽  
Shrimp Culture ◽  
Income Source ◽  
High Organic Matter ◽  
Brackishwater Pond

Introducing Biofilter as a Technique for Solving a Problem of Organic Pollutan at Brachiswater Pond at Lakkang Village, MakassarAbstract: Fish/shrimp culture at pond is one of income source for coastal community. Water sources for brackhiswater pond come from river and estuary.  The quality of water source for this pond depend on the quality of river and estuary.  On the other side, people use river to through it their waste not only domestic waste but also industrial waste along the river, consequently the pollutant in the river is high. Brackishwater pond along Tallo river has a source of water from River and Tallo Estuary.  A high organic concentration in the Tallo River has a significantly effect to the production of shrimp/fish pond.  A low water quality due to high organic matter could decrease the production of pond and farmers could not be able to grow out fish/shrimp for all year due to in particular month was occurred an increasing significantly of organic pollutant in the river. Introducing biofilter method to farmers for increasing  pond water quality and reducing organic waste in the pond is very important, so farmer could apply this simple biofilter technique for solving a problem of a high organic matter in their pond.  Applying biofilter techinique could be expected increasing water quality in the pond, consequently it could increase shrimp/pond production of farmers.Keywords: Biofilter, organic pollutant, Shrimp/fish pond, Tallo River and Lakkang Village.Abstrak: Budidaya ikan/udang di tambak merupakan salah satu sumber pendapatan masyarakat pesisir.  Sumber air di tambak biasanya berasal dari sungai dan muara sungai.  Kualitas sumber air di tambak sangat tergantung kepada kualitas air sungai dan muara.  Di sisi lain, sungai merupakan tempat pembuangan limbah baik limbah domestic maupun limbah industry yang ada di sepanjang sungai sehingga kandungan limbah baik limbah organic maupun non organic cenderung sangat tinggi di perairan sungai. Pertambakan di sepanjang muara sungai Tallo, Kelurahan Lakkang sumber airnya berasal dari Sungai dan Muara Sungai Tallo.  Tingginya kandungan bahan organic di perairan Sungai Tallo sangat mempengaruhi produksi tambak masyarakat. Kondisi kualitas perairan yang rendah karena tingginya kandungan bahan organic menyebabkan semakin turunnya produksi tambak dan masyarakat tidak dapat membudidayakan ikan dan udangnya sepanjang tahun karena pada waktu-waktu tertentu terjadi peningkatan limbah bahan organic yang signifikan. Pengenalan metode biofilter untuk meningkatkan kualitas perairan tambak dan mengurangi limbah organic di tambak sangat penting untuk dilakukan sehingga masyarakat dapat memanfaatkan teknologi sederhana biofilter untuk mengatasi masalah tingginya konsentrasi bahan organik di tambak.  Dengan penerapan teknologi biofilter ini diharapkan terjadi peningkatan kualitas air tambak yang akan meningkatkan produksi budidaya udang/ikan.Kata kunci: Biofilter, pencemaran, bahan organic dan Kelurahan Lakkang. 

scholarly journals Different densities in whiteleg shrimp culture using bioflocs and well water in subtropical climate

2018 ◽  
Vol 44 (4) ◽  
pp. 324
Author(s):  
Carolina COSTA ◽  
Geraldo FÓES ◽  
Wilson WASIELESKY ◽  
Luis POERSCH
Keyword(s):  
Well Water ◽  
Subtropical Climate ◽  
Shrimp Culture ◽  
Whiteleg Shrimp
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