Supply Chain Management of the White Leg Shrimp Business in Aceh Tamiang Regency

This study aims to map and to analyze the white-leg shrimp supply chain and the institutions. This research was conducted in July-September 2020. Data were collected using structured interviews and in-depth interviews. The results showed that the white leg shrimp supply chain consisted of providers of production inputs, cultivators, small traders, collectors, and exporters. The need for partnerships through professional business management through contracts with off-takers will create a shrimp business system that can provide added value and competitiveness. Keywords: Supply chain, institutions, business, white-leg shrimp, Aceh Tamian

Comparative study of the effects of HUFA in dry diets and natural foods on fecundity and egg diameter of female broodstock of white leg shrimp (Litopenaeus vannamei)

During 2 months (from April to June, 2008) we studied the suitable quantity of Highly Unsaturated Fatty Acids (HUFA) for desirable fecundity and egg diameter of female broodstock of white leg shrimp (Litopenaeus vannamei). Similar dry food containing Isonitrogeneous material (31.5% protein) and Isolipid (6.9% lipid) was used but with different levels of HUFA (1, 2 and 3%). Also, the HUFA of natural foods (Perinereis worm, melalis bivalvia and cuttlefish) was analyzed. We compared the effects of four levels of dietary HUFA (1, 2 & 3 % HUFA of dry diets and the average HUFA of natural diets) on fecundity and egg diameter of female broodstock of white leg shrimp. The fecundity and egg diameter of natural diet and HUFA 3% were not significantly different (P>0.05). The fecundity of natural diet and HUFA 3% was significantly higher than the other two treatments (P<0.05) and also the egg diameter of HUFA 3% and natural diet was significantly higher than the other two treatments (P<0.05). According to the results of fecundity and egg diameter measurements, both natural and HUFA 3% diets are suggested as suitable for white leg shrimp breeding

Production and Application of Organic Fertilizer for White Leg Shrimp and Milkfish Cultivation

The slow growth of white leg shrimp and milkfish cultivation became a concern in the location of community service activity (PKM). This was mainly due to food limitation, especially concerning the difficulty in natural food development. The purpose of this endeavor is to apply the production technology and application of organic fertilizer for the cultivation of white leg shrimp and milkfish along the marginal embankments. This endeavor was carried out in April to November 2019 in Mondoe Village, Konawe Selatan District, Southeast Sulawesi. This activity was manifested by providing production facilities, training, production of organic fertilizer, the use of organic fertilizer, white leg shrimp and milkfish cultivation, monitoring, and activities evaluation. The implementation of this activity was able to increase the knowledge, perception, and skills of participants as partners in producing fermented organic fertilizer. The application of the use of organic fertilizer was able to provide alternatives and overcome the limitation of fertilizer for aquaculture businesses in embankments. The results of this PKM were proven to be able to improve partners' knowledge and skills and provide solutions in overcoming the limitation of fertilizer especially in terms of aquaculture businesses in embankments

Effects of the Sargassum Sp Enrichment Time on Post-Larvae White Shrimp (Litopenaeus vannamei)

Sargassum sp has been applied in aquaculture and has shown promising results; however, the application in shrimp larvae through artemia bio-encapsulation and the length of Artemia enrichment is still unknown. This study aimed to evaluate the effect of Sargassum sp and its duration of enrichment on Artemia sp on the survival, growth, and immunity of white-leg shrimp (Litopenaeus vannamei) post-larvae. This study was an experimental study using a completely randomized design (CRD). The treatment was the duration of Artemia enrichment in Sargassum sp crude extract fed to vaname shrimp post larvae, namely: an enrichment time of 30 minutes (A), an enrichment time of 60 minutes (B), an enrichment time of 90 minutes (C), and without Sargassum sp extract (control) (D). The test animals were 1,440 PL1 stage white-leg shrimp (L. vannamei), stocked into 12 jars, each containing 2 L of water with a density of 60 shrimp/L (120 shrimp/jar). Daily feeding was carried out twice with Artemia sp and 4 times with flour feed, reared for 20 days. An environmental stress test was then carried out at a pH of 5 on the 20th day and the shrimp were observed 24 hours after the stress test. Observation parameters consisted of larvae survival, growth, and immunity. The results showed that the bio-enrichment of Artemia sp with Sargassum sp extract could improve the growth performance, survival, and hematology of white-leg shrimp after being reared for 20 days. Similarly, the environmental stress testing at a pH of 5 showed that the shrimp larvae had high survival rates and hematology, especially in the treatment with an enrichment duration of 90 minutes. Therefore, it was concluded that the bio-enrichment of Artemia sp with Sargassum sp extract could improve the survival rate, growth, and immunity profile of white-leg shrimp post larvae.

Biocontrol activity of Vibrio parahaemolyticusNT7 isolated from the shrimp acute hepatopancreatic necrosis syndrome (Ahpns) by Bacillus polyfermenticusF27 isolated from perionyx excavatus

cute Hepatopancreatic Necrosis Syndrome -AHPNSof cultured shrimp was first detected in China in 2009 and caused huge damage to shrimp farming in many countries including Vietnam. This study investigates the ability to inhibit Vibrio parahaemolyticuswhich causes hepatopancreatic necrosis of some Bacillusstrains. V. parahaemolyticusNT7 of this research was isolated from a white leg shrimp sample with hepatopancreatic necrosis in Ninh Thuan province and identified by biochemical methods. By the cross-steak and well-diffusion methods, the selected strain Bacillus polyfermenticusF27 showsthe largest diameter of 18.50 mm resistance to V.parahaemolyticus NT7.B. polyfermenticus F27strain caninhibitV. parahaemolyticus NT7. Besides, B. polyfermenticusF27 inhibits V. parahaemolyticusNT7 with co-cultured experiment and does not cause hemolysis. It is also safe for white leg shrimp seed with a 100% survival rate of the experimental treatments. The result of LD50 examination when infecting V.parahaemolyticus NT7 to white leg shrimp seed is 105CFU/ml. Through the host protectioncapability assessment of B. polyfermenticusF27, we found that itcanprotect white leg shrimp seed from V. parahaemolyticus.The findings show that strains of B. polyfermenticusF27 have the potential to produce probiotics for controland preventionof EMS/AHPNS of shrimps

PERFORMANCE OF CULTURED White-leg Shrimp IN RICA Probiotic Application METHOD in PONDS AERATED WITH SUPERCHARGE BLOWER

Several ways have been done to encounter shrimp disease affecting cultured shrimp in Indonesian ponds in the last two decades. This research was aimed to find out the effect of different application of probiotic RICA4, RICA5, and RICA3 method on survival rate and production of white-leg shrimp (Litopenaeus vannamei) cultured in ponds aerated with supercharge blower. RICA probiotics are bacteria probiotics produced by the Research and Development Institute for Coastal Aquaculture, originally isolated from seaweed and sea sediment. This experiment was carried out in completely randomized design using nine 250-m2 experimental ponds stocked with 15 shrimp fries/m2. There were three treatments namely: A=alternate use of three probiotics RICA4, RICA5, and RICA3; B=combination use of three probiotics RICA4, RICA5, and RICA3; and C=control (without probiotic), each treatment with three replications and cultured with supercharge blower. Variables observed in this study were survival rate and production of the shrimp calculated at the end of experiment, total vibrio count (TBV) and total plate count of common bacteria (TPC) of the pond waters and sediments monitored every two weeks. The results showed that application of probiotic RICA4, RICA5, and RICA3 applied either in alteration or in combination significantly increased survival rate (P&lt;0.05) but not on production (P&gt;0.05) of the white-leg shrimp. TBV/TPC ratio in the control pond waters after 10-weeks culture (over than 10%) was relatively dangerous for the cultured white-leg shrimp. This shows that application of probiotic could prevent the growth of Vibrio spp in the cultured shrimp pond water

Physiological responses to swimming fatigue of juvenile white-leg shrimp Litopenaeus vannamei exposed to different current velocities, temperatures and salinities

Swimming performance is one of the crucial factors determining the lifestyle and survival of Penaeid shrimps. This study examined under controlled laboratory conditions, the physiological responses to swimming fatigue of juvenile white-leg shrimp Litopenaeus vannamei (8.85 ± 0.05 cm TL) exposed to different current velocities, temperatures and salinities factors which have been correlated with their swimming performance. The swimming endurance of juveniles decreased as current velocity increasedfrom 5.41 to 11.47 cm s-1 at any of the temperatures and salinities tested. Exercise to fatigue led to severe loss of serum total protein concentration (PC) and serum glucose level (SG) in L. vannamei exposed to different current velocities, temperatures and salinities (P &lt; 0.05). Moreover, decrease of PC and SG in fatigued shrimp varied with current velocity, temperature and salinity. The results showed that the mobilization of protein and glucose in response to swimming fatigue was rapidly diminished and suggest how physiological responses to swimming fatigue of juvenile white-leg shrimp L. vannamei exposed to different current velocity, temperature and salinity may determine their swimming performances.Key words: Litopenaeus vannamei, swimming fatigue, current velocities, temperatures, salinities

Effects of difference C/N ratio on water quality of white leg shrimp (Litopenaeus vannamei) cultivation

Biotechnology is used to apply technology to the C/N ratio by stimulating the activities of heterotrophic microorganisms, which derive food from carbon and nitrogen substrates in a certain ratio. The goal of this research was to see how the optimal carbon-nitrogen ratio affected water quality and floc volume in white leg shrimp (Litopenaeus vannamei) farming. This study took place in the UPT Integrated Laboratory Unkhair in Ternate City in July and August 2021. A fully randomized design (CRD) with four treatments and three replications was used in this investigation. Different C/N ratios had an effect on ammonia, nitrite, nitrate, floc volume, and feed conversion ratio, according to the research. The water quality parameters are still suitable for white leg shrimp cultivation. In white leg shrimp culture, the addition of C-organic molasses (different C/N ratios) was able to reduce the concentrations of (NH3), (NO2), and (NO3), and also greatly increase the flock volume and streamline the feed conversion ratio. Keywords: C/N Ratio Vannamei Wastewater Bioflo

Effect of astaxanthin pigment on growth performance, survival and pigmentation in postlarval stage of white leg shrimp, Litopenaeus vannamei

The aim of this research was to study the effect of astaxanthin pigment on growth performance (weight again, specific growth rate and final body weight), survival and pigment accumulation in postlarvae of white leg shrimp. This study was carried out in spring 2011 at Kolahi Aquatic Development Center. Some 8-day postlarvae with mean (±SD) initial weight 5.3±1.6mg were fed diets with containing various levels (0, 50, 100 and 200mg/kg diet) of astaxanthin pigment for 30 days. Shrimp fed with diet without astaxanthin pigment served as control. Shrimp fed diets containing 50, 100 and 200mg/kg astaxanthin, growth performance and survival was significantly higher than control group. The pigment accumulation rate was determined by high performance liquid chromatography (HPLC). The analysis of pigment accumulation showed that the higher increasing astaxanthin pigment amount in the diets, the higher growth performance and survival rate in postlarvae; as in postlarvae fed with 200mg astaxanthin/kg, final weight (700.6±12.7mg) and survival rate (82±1.5%) was significantly higher than control group (484.2±28.9, 54.7±4.5% final weight and survival rate, respectively). Due to nutritional properties of astaxanthin pigment and the positive effect on growth and survival, the feeding of postlarval white leg shrimp with the diet containing at least 100mg astaxanthin/kg is recommended

Good aquaculture practices (VietGAP) and sustainable aquaculture development in Viet Nam

The shrimp (black tiger and white leg shrimp) and catfish industries in Viet Nam continue to experience increasing growth due to rapid aquaculture development. However, disease outbreaks become a major issue. Moreover, seafood consumers at present are likely to be more concerned about how the products are produced and how to control/manage aquatic animal health instead of treatment. Hence, the main objective of this abstract is to focus on one of the solutions to address these problems/issues and ensure sustainable aquaculture development in Viet Nam