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Vaname shrimp (Litopenaeus Vannamei) is one of Indonesia's fishery commodities with high economic value. Vaname shrimp production in Indonesia continues to increase. However, obstacles sometimes arise in cultivation activities, such as the emergence of shrimp diseases and poor water quality. High stocking density and shrimp feeding can cause a decline in water quality. In addition, pond water quality is influenced by pond location and the surrounding environment, such as agriculture, settlements, mangroves, and the sea. This causes ponds to have different water qualities. One of the diseases that often attacks shrimp farming is caused by the bacterium Vibrio sp. The abundance of Vibrio sp. bacteria is closely related to pond water quality and the environmental conditions around the pond. The methods used were TPC testing and multiple linear regression testing. Based on the results of the study, the abundance of Vibrio sp. bacteria in pond A was the highest at 8.3 x 102, and pond C had the lowest at 3.1 x 102. Water quality testing in three different ponds showed safe limits for cultivation, except for nitrite testing. Based on the simple linear regression test, the water quality parameters that significantly affect the abundance of Vibrio sp. bacteria are pH, temperature, and nitrite.  

Field Work Practice (PKL) at Tambak Mina Bangkit Bersama (MIBAMA), Karangrejo, Banyuwangi, was conducted from June 26 to August 3, 2024, with the aim of understanding the process of growing Litopenaeus vannamei shrimp in HDPE ponds. Vaname shrimp farming involves pond preparation, seedling stocking, feed management, and water quality monitoring to optimize shrimp growth. Growth monitoring was carried out through sampling, resulting in an Average Daily Growth (ADG) value ranging from 0.41 to 0.71 grams per day. Water quality measurements showed that temperature, pH, and dissolved oxygen levels were still within safe ranges, although several parameters such as salinity, TDS, and ORP required special attention. Partial and total harvesting resulted in an accumulated production of 5.1 tons in this cycle. The use of HDPE ponds proved effective in maintaining the aquaculture environment and supporting production intensification. This study emphasizes the importance of proper water and feed quality management to enhance shrimp productivity and health, while also providing recommendations for continuous monitoring to address stress factors in shrimp during cultivation.

This study aims to analyze the development strategy of vannamei shrimp (Litopenaeus vannamei) cultivation business in the intensive pond system at CV Jaya Tirta Vannamei, Probolinggo, East Java. The research applied a qualitative descriptive approach combined with SWOT analysis to evaluate both internal and external factors affecting the business. Data were obtained through observation, interviews, and documentation, then processed to generate alternative development strategies. The results show that CV Jaya Tirta Vannamei possesses strong internal resources such as experienced human resources, reliable production facilities, and good management capabilities. Externally, the company benefits from the rising demand for vannamei shrimp in domestic and global markets, the availability of modern aquaculture technology, and supportive government policies. Nevertheless, some challenges exist, including fluctuating shrimp prices, vulnerability to disease outbreaks, and relatively high operational costs, which may influence business continuity if not addressed effectively. Based on the SWOT analysis, the most appropriate development strategy is the S-O (Strengths–Opportunities) strategy, with an alternative strategy score of 3.72. The recommended strategies are: (1) increasing shrimp production through the adoption of advanced and sustainable cultivation technology, (2) developing and maintaining a reliable water quality management system to enhance productivity, (3) utilizing skilled human resources to strengthen innovation in cultivation techniques, and (4) ensuring the availability of sufficient and quality feed to support continuous production growth. In conclusion, implementing the S-O strategy provides an effective pathway for CV Jaya Tirta Vannamei to optimize its internal strengths in response to external opportunities. By improving technology application, strengthening resource utilization, and enhancing production management, the company can secure competitive advantage, increase productivity, and ensure long-term sustainability in the rapidly growing aquaculture industry.

This Field Work Practice was carried out at PT Varia Indowin Perkasa (VIP) which is located in Wongsorejo District, Banyuwangi Regency, East Java Province from June 24, 2024 to August 24, 2024. The working method used in this Field Work Practice is a descriptive method with data collection through primary data. Data collection was carried out through active participation, observation, interviews and literature studies. The results of this PKL are monitoring water levels with different results for each plot from 100-130 cm, and water clarity with an average of 56 cm, an average temperature of 26℃. The pH results obtained with an average of 8.4, salinity ranged from 16-24 ppt, nitrite tended to fluctuate with the highest value reaching 0.07 ppm, ammonia 0-0.06. While alkalinity is still stable at 80-120 ppm. The problem in cultivation is the nitrite and ammonia content which exceeds the reasonable limit of 0.3 ppm, so that the water parameters are unstable in the middle of cultivation and the presence of pathogens in the pond waters, including early mortality syndrome and there are cases of shrimp not wanting to eat so that growth is inhibited.

Vannamei shrimp is one of the shrimp species with economic value and is one of the national leading commodities. On the other hand, one of the problems in vannamei shrimp cultivation is its slow growth, slow growth is caused by the less optimal absorption of nutrients in the feed. In dealing with these problems, one of the things that is done is the administration of probiotics. The addition of probiotics such as Biolacto containing Lactobacillus sp bacteria to the feed can increase the appetite of shrimp. This study aims to determine the effect of biolacto probiotics on feed on the growth of the absolute weight of vannamei shrimp. This study used a Complete Random Design (RAL) with four treatments: A (feed without a mixture of probiotics), B (probiotics 2 gr/100 gr feed), C (probiotics 4 gr/100 gr feed), and D (probiotics 6 gr/100 gr feed). Treatment B with a concentration of probiotics 2gr/100g feed gave the highest absolute weight growth of 9.2 gr. Water quality data during the study were obtained with water temperature ranging from 28.5 – 29.2°Celsius, salinity ranging from 36 – 37 ppt, pH ranging from 7.5 – 8.0, and dissolved oxygen ranging from 4.0 to 4.63 mg/l. The results of the ANOVA analysis of the four water quality parameters showed no difference between treatments and were in the optimal range of life of vannamei shrimp (Litopenaeus vannamei).

Vaname shrimp (Litopenaeus vannamei) is considered a superior variety. However, understanding water quality parameters is very important, because the crucial role of water must be maintained to suit the needs of vaname shrimp. Therefore, this research was carried out with the aim of evaluating the values ​​of vaname shrimp water quality parameters including temperature, pH, salinity, brightness, dissolved oxygen. The data collection method is carried out by making direct observations when going into the field. Observations are carried out in two ways, namely in situ with direct observation at the observation site. And ex situ is observation by taking samples in the field and observations will be carried out on the spot. Data analysis was carried out using quantitative descriptions. The research results show that the water quality parameters in vaname shrimp ponds are within the optimal range recommended by the Indonesian National Standards (SNI). Good water quality management, such as adjusting pH using limestone and providing probiotics, is an important factor to support shrimp growth. This research provides important information for cultivators in increasing vaname shrimp productivity.

Water quality management means efforts made to maintain water parameters so that they are in a safe condition, the standard of cultivation mediab required. Poor water quality will be the start of disease for shrimp and cn cause stress. Poor water quality can affect growth, metabolic processes and survival. Shrimp become low. The aim of this research is to find out whether the optimal quality management for the survival of vannamei shrimp (litopenaeus vannamei) at the reborn vannamei farm is optimal. The data alalysis method in this research uses quantitative descriptive analiysis techniques.The survival percentage of vaname shirmp from plot A 93,78%, plot B 92,68%, plot C 92,40% and plot D 90,38%. All plot showed a high survival rate from the standard value set by PT. Proteina Central Prima or CP Prima.