Preferensi Teripang Pasir Holothuria scabra Terhadap Pakan Berbahan Dasar Makroalga

<p class="Papertext"><strong>The Preference of The Sandfish Holothuria scabra on Macroalgae-Based Feed. </strong>The sandfish, <em>Holothuria scabra</em>, is one ofthe marine species that has the potential to be developed as a source of high-value functional food. However, the growth of sandfish is still constrained by the availability of suitable feed. This study aimed to determine the level of preference of sea cucumbers for artificial feed made from macroalgae. This study used six main ingredients: control (sea-sand), FF-1 (commercial shrimp feed), FF-2 (<em>Padina</em> sp.), FF-3 (<em>Ulva</em> sp.), FF-4 (<em>Sargassum</em> sp.), FF-5 (combination). A completely randomized design with three replications was implemented. Nutritional values of feed and the sandfish body, feed consumption, specific growth rate (SGR), survival, and water quality were investigated. The results revealed that all treatments had a 100 percent survival rate, even though the SGR for all treatmentswere negative. Artificial feed made from <em>Padina</em> sp. (FF-2) had the highest average feed consumption of 0.51 gram/day. This value was significantly greater than the other treatments (p&lt;0.05). The SGR reached a positive value in the last week of the maintenance phase. The nutritional quality of the sandfish body generally decreased compared to the initial rearing condition. On the other hand, water quality was optimal for sandfish growth throughout the experiment.It can be concluded that the feed derived from <em>Padina</em> sp. is preferable for <em>Holothuria scabra </em>and has the potential to be further developed.</p>

MANGROVE ASSOCIATE BASED SHRIMP FEED: AN INNOVATION IN THE AQUACULTURE SECTOR

The traditional method of shrimp culture is a common practice in Indian Sundarbans which is done without any sound scientific back-up, proper feed, and water quality management. The shrimp farmers use a traditional feed of animal origin that often results in deterioration of water quality and disease outbreaks in cultured species. The present paper highlights the effect of the total replacement of animal ingredients in shrimp feed with floral ingredients on water quality and shrimp health. Weight gain, condition index, feed conversion ratio (FCR), survival, body pigmentation (astaxanthin level) were analyzed in shrimps along with pond water quality. Higher condition index (C.I.) values, survival rate, and gain in shrimp weight were observed in the experimental pond (E) compared to the control pond (C). Low FCR values were observed in the experimental pond than in the control pond. Astaxanthin values in shrimps of the experimental pond were also higher than the control pond which points towards Suaeda maritima as the source of carotenoid in the shrimp tissue.

PENENTUAN HARGA POKOK PRODUKSI PADA PT. CENTRAL PROTEINA PRIMA, Tbk

The rapid growth of the business world is reasonable with fierce competition fornew and similar industries. This phenomenon requires companies in manufacturingto compete competitively as experienced by the animal feed industry, especiallyshrimp feed. Marketing of shrimp feed at the end of 2019 increased after decliningsince the first quarter of the third quarter. According to the head of the aquaculturedivision of the Association of Animal Feed Entrepreneurs (GPMT) Haris Muhtadi,the transmission occurred because of an outbreak of disease attacking shrimp andafter the outbreak ended, shrimp production began to compete again. There aremany ways that companies, especially those engaged in shrimp feed, do so. Startingfrom creating low prices to making brand variations with a certain quality measurethat is used as a price differentiator between these products. To get around this, thecompany must have the right strategy and policy, namely by paying attention to thecost of production of its products. The purpose of determining the cost of goodsmanufactured at PT. Central Proteina Prima, Tbk. This is to analyze the differencein cost of goods manufactured between the methods used by the company and thecost of goods manufactured with the full cost and variable cost methods. This studyuses a qualitative descriptive method and the data source is secondary data. Theresults of the study to determine the cost of production is the shrimp feed factory ofPT. Central Proteina Tbk Medan issued a production cost per kilogram of Rp.14.103.5. Meanwhile, the variable cost of the method according to the previoustheory, the value per kilogram is smaller, namely Rp. 14,049, with a difference ofRp. 54.5 per kilogram. If the company sets a price of Rp 19,745 per kilogram usingthe same method, then determining the cost of goods manufactured 0.5% is moreeffective using the theoretical variable cost method. This difference occurs becauseof the grouping of raw material costs and direct labor costs which affect factoryoverhead costs and the cost of goods manufactured.

Effect of Rumen Fluid Dosage and Fermentation Time on Dissolved Protein Levels of Vegetable Waste Silage for Vannamei Shrimp Feed

Specifically, the goal of this research was to evaluate the dissolved protein content of vegetable waste generated during the incubation of rumen fluid for use in (Whiteleg) vannamei shrimp diet. The results of the analysis of the degree of protein hydrolysis of vegetable waste treated with the addition of rumen fluid enzymes and different fermentation times of rumen fluid revealed that the addition of rumen fluid enzymes and different fermentation times of rumen fluid had a statistically significant effect (p0.05) on the degree of protein hydrolysis of vegetable waste. But there was no significant difference in the length of fermentation time or the interaction between the dosage of rumen fluid and the length of time (p>0.05) between the two groups. Duncan's test of rumen fluid dosage revealed that the degree of hydrolysis at a 1 percent dose was considerably greater (p0.05) than at 2 percent and 3 percent doses, and that the degree of hydrolysis at a 3 percent dose was significantly lower than at 2 percent

Evaluation of Carboxymethyl Cellulose (CMC) Binder and Squid Oil Attractant in the Formulation of Litopenaeus vannamei Diet

Highlight ResearchEffects of carboxymethyl cellulose (CMC) binder on pellet water stability in shrimp diet.Evaluation of squid oil attractant on feed palatability.The quality of water after inclusion of CMC binder and squid oil in pellet.CMC and squid oil improved dry matter retention and feeding responses in shrimp. AbstractPellet water stability and feeding attractant are the crucial factors to be considered in the formulation of shrimp feed to minimize nutrient leaching and improve food palatability, respectively. The aim of this study was to determine the binding effect of supplementation of carboxymethyl cellulose (CMC) during pellet manufacturing, and feeding responses with the inclusion of squid oil in pellet. Both experiments were conducted separately in five feed formulations ranged from 0.00% to 3.00% of CMC and squid oil. All T0 was referred as control with no CMC or squid oil. Experiment was conducted using 30 shrimps/treatment with triplicates. The dry matter retention up to 120 min of immersion and the feeding response test were evaluated in pellet supplemented with CMC and squid oil, respectively. Results showed the percentage of dry matter retentions increased with the increase of CMC, over time. The CMC containing pellets at 2.00% and 3.00% had minimal disintegration in water and possessed high water stability after 120 min immersion. The addition of 3.00% squid oil in feed exhibited a significant result (p<0.05) in the time taken for shrimp to access the pellet, also increased the time starts for ingestion. No significant change was observed in water quality indicated no water contamination occurred throughout the study. Results demonstrated that the addition of CMC binder at 2.00% and 3.00% improved pellet water stability, whilst 3.00% squid oil was recommended to enhance feed palatability. However, future studies on the activity of enzymes in shrimp bodies after treatment would be an advantage.

The Addition of Red Betel Leaf Extract (Piper crocatum) in the Feed of Vannamei Shrimps (Litopenaeus vannamei) for Vibriosis Prevention

Vibriosis is a type of shrimp disease caused by Vibrio sp. In the disease control of consumption biota, it is highly recommended to use natural ingredients that are not carcinogenic, one of which is red betel leaves (Piper crocatum). This study aims to determine the best dose of red betel leaf extract (P. crocatum) mixed in Vannamei shrimp feed to prevent vibriosis. In this study, shrimps were reared for 40 days at a density of 20 fish/container. The treatments included positive control, P1 (without extract + bacterial infection), negative control P2 (without extract and without bacterial infection), P3 (0.5% extract + bacterial infection), P4 (1% extract + infection), and P5 (2% extract + bacterial infection). The application of red betel leaf extract at a dose of 0.5% resulted in 75% survival after infection with V. parahaemolyticus, Vannamei shrimps of THC 7.70×106 cells/mL, and DHC (hyaline 82.94% granular 20.10%). The number of bacteria and the number of vibrio in the intestine were 52×108 CFU/mL and 12×108 CFU/mL accordingly. The best dose was obtained at P3 (Feed +0.5% red betel leaf extract), seen from the increase in survival rate, the number of hemocytes, differential haemocyte counts, and a decrease in total bacteria, so the application of red betel leaf extract can be used in the cultivation of Vannamei shrimps as an immunostimulant.

Pengaruh Pemberian Ekstrak Stichopus hermanii Semper, 1868 (Stichopodidae, Holothuroidea) terhadap Jumlah Total Hemosit Litopenaeus vannamei Boone, 1931 (Penaeidae, Crustacea)

Peningkatan imunitas udang vaname dengan menggunakan imnostimulator merupakan salah satu upaya untuk mencegah kegagalan panen pada budidaya udang vaname. Ekstrak teripang emas memiliki senyawa yang berperan sebagai peningkat imun. Beberapa senyawa yang terkandung pada teripang emas yaitu saponin dan steroid. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pemberian ekstrak teripang emas terhadap jumlah total hemosit Litopenaeus vannamei dan konsentrasi ekstrak teripang emas yang paling tepat untuk meningkatkan jumlah total hemosit udang vaname. Metode yang digunakan adalah metode eksperimen laboratoris dengan perlakuan konsentrasi ekstrak teripang emas yang ditambahkann pada pakan udang komersil yaitu 0 ppm; 40 ppm; 80 ppm; 120 ppm. Hasil penelitian jumlah total hemosit udang vaname terjadi peningkatan akibat pemberian ekstrak teripang emas dibandingkan kontrol. Peningkatan tersebut terlihat pada jumlah total hemosit udang vaname yang diberi ekstrak teripang emas dengan konsentrasi 40 dan 120 ppm pada hari ke-8. Pemberian ekstrak teripang emas dengan konsentrasi 120 ppm memberikan hasil terbaik yaitu jumlah total hemosit sebanyak 1,18x106 sel/mL, dan untuk kelangsungan hidup udang vaname yang diberikan ekstrak teripang emas dan kontrol memiliki persentase sebesar 100%. Kesimpulannya adalah pemberian ekstrak teripang emas berpengaruh terhadap jumlah hemosit udang vaname. Increased immunity of vaname shrimp by using imnostimulator is one of the efforts to prevent crop failure in the cultivation of vaname shrimp. gold sea cucumber extract has a compound that acts as an immune enhancer. Some of the compounds contained in Stichopus hermanii are saponins and steroids. The purpose of this study was to determine the effect of gold sea cucumber extract on the total amount of vaname shrimp haemocyte and the most appropriate concentration of golden sea cucumber extract to increase the total amount of vaname shrimp haemocyte. The method used was a method of laboratory experimentation with the treatment of the concentration of Stichopus hermanii extract added to commercial shrimp feed that is 0 ppm; 40 ppm; 80 ppm; 120 ppm. The results of the study the total amount of shrimp haemocyte Litopenaeus vananamei increased due to administration of Stichopus hermanii extract compared to control. The increase was seen in the total amount of vaname shrimp haemocyte given gold sea cucumber extract with concentrations of 40 and 120 ppm on day 8. Administration of gold sea cucumber extract with a concentration of 120 ppm gives the best result that is the total amount of haemocyte as much as 1.18x106 cells / mL, and for the survival of Litopenaeus vannamei given extract gold sea cucumber and control has a percentage of 100%. The conclusion is that the administration of gold sea cucumber extract affects the amount of haemocyte shrimp vaname.

Effect of Shrimp Feed Supplemented with Astaxanthin on Golden Apple Snail Pomacea diffusa

Popularmente conhecidas como ampulárias, esses moluscos gastrópodes são usualmente cultivados como organismos ornamentais pelo mundo. A coloração desses animais ornamentais é um dos pontos que atrai os seus admiradores e estimula sua aquisição no mercado. O pigmento mais difundido como suplemento para intensificação de cor em organismos aquáticos é a astaxantina. Ainda não existem rações específicas para a ampulária reforçando a necessidade de testar alternativas de alimentos e suplementos que melhorem o desempenho produtivo e a atratividade do animal. Os objetivos desse estudo foram mensurar a capacidade de acumulação de astaxantina sintética em diferentes níveis de inclusão na dieta de Pomacea diffusa, sua influência na concentração do pigmento e nos índices zootécnicos ao final do cultivo. E em paralelo verificar a influência da mudança da dieta de ração de peixes para ração de camarão na condição corporal dos moluscos em comparação com o início do trabalho. As ampulárias alimentadas com ração comercial extrusada para camarão marinho tiveram baixos índices de conversão alimentar (126,7 ± 18,3), altos índices de eficiência alimentar (126,7 ± 18,3%) e fator de condição (1,0 ± 0,14) acima da média inicial (0,90 ± 0,17), o que demonstra que esse alimento pode ser utilizado para seu cultivo. A suplementação dietética de astaxantina sintética não resulta em aumento significativo da concentração desse pigmento na musculatura desse molusco (P˃0,05). Palavras-chave: Ampulária. Moluscos. Gastrópodes. Pigmentos. Carotenoides. Abstract Known as apple snail, these gastropods are popular as aquarium pets around the world. The bright color of these animals is one of the key points that attract their attention in the ornamental aquaculture, where deep-colored animals are well appreciated. Astaxanthin is the most widespread color enhancing pigment used as a food supplement for aquatic organisms. There is no specific commercial food for apple snails, emphasizing the need to search for food alternatives and supplements that improve their performance and attractiveness. The objectives of this study are to measure the synthetic astaxanthin accumulation capacity of Pomacea diffusa at different levels of diet supplementation, and the effect on pigment concentration and zootechnical indexes at the end of the culture. It was also aimed to verify the effect of the diet change from fish food to extruded shrimp food on the mollusks’ body condition. Apple snails fed with commercial shrimp ration had low feed conversion rates (0.81 ± 0.13), high food efficiency (126.7 ± 18.3%), and condition factor (1.0 ± 0.14) above the initial average (0.90 ± 0.17), demonstrating that this might be an advantageous alternative food. Dietary supplementation with synthetic astaxanthin did not result in a significant concentration increase of this pigment in muscle tissue of these mollusks (P˃0.05). Keywords: Aquaculture. Mollusks. Gastropods. Pigments. Carotenoids

Chemoattractants: Their essentiality and efficacy in shrimp aquaculture

Aquaculture serves as a sustainable source of good quality wholesome food and major input is feed. In recent years, considerable quantities of plant sources have been attempted for inclusion in shrimp feed, due to high demand and high cost of fishmeal. Plant-based ingredients are in general poor in attractability and palatability to aquatic species compared to marine sources. It is desirable to develop an economical and nutritious feed that is attractive and palatable for ensuring reduction of feed wastage. Chemoattractants nowadays are unavoidable in commercial shrimp feeds and are included either individually or in combination. The present review revealed that the various marine sources, in particular krill meal would be more effective for aquatic species, compared to those derived from vegetable origin and chemical compounds. In addition to acting as a feed attractant, marine sources serve as a potential fishmeal substitute due to their rich nutritional composition. However, certain biogenic amines present in these marine-based ingredients need to be examined before their use, since these amines when present in high concentrations reduces feed intake by producing undesirable odour. Use of a combination of chemoattractants would give a better effect, rather than using them individually and compounds from plant origin have limited beneficial effects. The present review concludes that incorporation of chemoattractants would be beneficial in formulation of enriched and economical feeds with better attractability and palatability. The selection of suitable attractant and their supplementation at correct proportion is significantly more important to avoid undesirable effects in cultured shrimp. Further field-based research is needed to predict the actual effects of chemoattractants on farmed shrimp and to provide a sustainable base for the expansion of shrimp aquaculture sector, by reducing feed wastage.