Identification and Prevalence of Ectoparasites in Carp (Cyprinus carpio) Seeds From Central Local Fish Seed Center and Fish Farmers in West Koya Region

<p>The needed for carp in Jayapura City was greatly increasing along with the high growth and <br />increase of population in Jayapura City. Cultivation of carp (Cyprinus carpio) can be done <br />intensively and semi-intensively by taking into account the economic value. However, from <br />cultivation activities, the problems that were often faced in cultivation activities were the attack of <br />dangerous types of pathogens such as parasites. Parasite was a fish disease that occurs more <br />frequently. Parasites were organisms that live on the body of other organisms and generally have a <br />negative effect on their host. This study aimed to identify and the prevalence of ectoparasites to <br />determine the type and level of ectoparasite attack on carp (C. carpio) seeds and to reduce the <br />impact of ectoparasites which was feared to reduce the amount of carp production from cultivation. <br />The method used was a direct survey to the Local Fish Seed Center and fish farmers in the Koya <br />Barat area. The fish used were carp in the seed phase where the fish's immune system was still weak, <br />making it more susceptible to contracting parasites. This study showed that there were 4 types of <br />parasites found during the study that infected carp seeds, namely Dactylogyrus sp, Gyrodactylus sp, <br />Trichodina sp, and Lernea sp. The average prevalence rate of Dactylogyrus sp. at stations I, II, III, <br />and IV was 25%, Gyrodactylus sp. 8.3%, Trichodina sp. 8.3% and Lernea sp. 5% with the lowest <br />prevalence rate.</p>

Different Levels Of Addition Of Salinity To Survival, Growth And Conversion-Efficiency Feed’s Tilapia (Oreochromis sp.)

<em>Tilapia is one of the consumption fish commodities that was very popular with the public. The development of tilapia aquaculture was growing rapidly, especially saline tilapia. The high potential of saline tilapia development causes the demand for fingerlings to increase. This research aimed to determine the best dose of salinity increase in the effort to adapt freshwater tilapia to saline tilapia. In addition, it also observed survival, growth and feed efficiency. The method used was experimental method with completely randomized design and data were analyzed using SPSS16 and Tukey's test. The research treatments included the levels of addition of salinity by 1 ‰/day, 2 ‰/day, 3/day and 4 ‰/day. The difference in salinity had a significant effect on Survival Rate (SR), Growth Rate (GR), Specific Growth Rate (SGR), Feed Conversion Ratio (FCR) and Feed Utilization Efficiency (FUE). The best treatment in this research was the addition of salinity of 1 ‰/day with SR of 96%, GR of 35.1 g / t, SGR 1.22% w / day, FCR of 1.04 and FUE of 96%.</em>

FINANCIAL ANALYSIS OF TILAPIA (O. niloticus) FRY BUSINESS ACTIVITY AT THE KLEMUNAN FISH FRY CENTER, BLITAR DISTRICT

<p><em>Tilapia (O. niloticus) fish hatchery activity is a fishery business unit developed at the Klemunan Fish Fry Center (BBI), Blitar Regency. The purpose of this study was to determine the financial value and profit of the tilapia (O. niloticus) hatchery at the Klemunan Fish Fry Center (BBI), Blitar Regency. The research method used in this research is a survey research method with research data collection in 3 ways : active participation interviews, and observations. The financial analysis indicators analyzed are business profitability variables, R/C Ratio, Rentabilitas, Break Event Point (BEP) units and BEP sales. Based on the results of the financial analysis, the business profit value is Rp. 11.170.000,-, R/C Ratio at 8.81, BEP Unit at 58.6, BEP Sales Rp. 2,349,290, -, and business profitability of 49.9%, where the value of these indicators is very feasible because the numbers meet the criteria for a profitable business. So, from this research it can be concluded that based on business financial analysis which includes profitability analysis, R/C Ratio, BEP Unit, BEP Sales, and rantabilitas business, tilapia (O. niloticus) hatchery business activities at BBI Klemunan are very profitable and prospective to be developed.</em></p>

The Effectiveness Of Providing Different Natural Feed Types Of Swordtail (Xiphophorus Helleri) Broodstock On Crude Birth Rate (Cbr)

<p>The most important factor in speeding up fish depends on the food given. The feed given was in the <br />form of artificial feed (pellets) because of the practicality of its availability. However, commercially <br />made feed was of course more expensive, and can pollute the air compared to natural feed which was <br />easy and can be in the surrounding environment. For this reason, it was necessary to look for natural <br />feed as an effective and efficient alternative feed to ripen the gonads of male and female swordtail. <br />The research used a completely randomized design with 4 treatments and 3 repetitions and arranged <br />randomly. Treatment by giving different natural food to the broodstock swordtail: treatment A <br />(commercial pellets), B (Daphnia/Moina), C (blood worms) and D (mosquito larvae feed). Each <br />broodstock treatment used was 27 females and 9 males (ratio 1: 3). The results of water quality <br />measurements of all treatments with an average DO 4 mg/L, temperature 26 to 27<br />o<br />C, pH 7-8 and 30 <br />mg/L hardness, thus showing the water quality during the research, the water condition was suitable <br />for the maintenance of broodstock of swordtail, so that it supported growth. and breed of swordtail <br />to produce tillers. The results showed that the highest average birth rate of swordtail broodstock <br />produced in treatment D were 141 fish followed by treatment B 125 fish, then treatment C of 117 fish. <br />and the lowest was in treatment A with a birth rate of 102 fish.</p>

WATER QUALITY MANAGEMENT IN INTENSIVE AQUACULTURE OF VANNAMEI Shrimp (Litopenaeus vannamei) at PT. ANDULANG SHRIMP FARM

Vaname shrimp (Litopenaeus vannamei) is one of the commodities that is very promising for aquaculture and is a prima donna because of the high international market demand so that vaname shrimp production needs to be increased. Increasing shrimp production can be done with a high stocking density system. However, one of the drawbacks of this system is that it can reduce water quality because this system requires high feeding. Declining water quality will cause stress to the shrimps and cause diseases that cause failure in shrimp enlargement, it is necessary to manage water quality properly and appropriately. The main parameters observed in this study were stocking density, feed management and water quality monitoring. Water quality during the observation is still in the normal range of brightness, 25-90 cm, temperature ranges between 27-31.8.0C, pH between 67.1-8.7, salinity 19-31 ppt, dissolved oxygen between&gt; 4.03 -5.60 mg / l, alkalinity ranges from 74-154 mg / l, TOM ranges from 24.8-90.0 mg / l, ammonium ranges from 0.5-5 mg / l, nitrites range between 0.5 -18 mg / l, and phosphate ranges from 0.25-18 mg / l.

THE PERCENTAGE OF OXYGEN ABSORPTION BY VANNAMEI SHRIMP (LITOPENAEUS VANNAMEI) WHICH IS SUPPORTED BY THE PADDLEWHEEL

<p>A dynamic model was used to obtain optimal value or amount in the application of paddlewheel. Stella 9.1.4 software programing was employed to find relationships among parameters. The aims of this reasearch was to determine the percentage of oxygen uptake by vannamei shrimp (Litopenaeus vannamei) which is supported by 1 paddlewheel. The result showed that the optimal number of paddlewheel was 1 paddlewheel with Standart Aeration Efficiency was 1,31 kgO2/kWh. The percentage of oxygen absorption on vannamei shrimp until final cultivation was 24% during the cultivation, the percentage of oxygen absorption on vannamei shrimp had increased. In this research, total oxygen demand was 567 ppm, shrimp production was 1054,88 kg, the amount of feed was 2278,1 kg with a pond area was 600 m2, stocking density was 133 PL/m2 during a cultivation period of 98 days.<br />Keyword : Paddlewheel, Oxygen, Vannamei shrimp (Litopenaeus vannamei)</p>

Broodstock Health Management for Cantang Grouper (Epinephelus sp.) in BBRBLPP Gondol Bali

Fish health is an important problem faced by Cantang grouper (Ephinephelus sp.) Hatcheries. Broodstock health management needs to be managed properly so as not to decrease the quality and production of Cantang grouper seeds. Cantang grouper broodstock health management includes the process of maintaining grouper broodstock, feeding, disease control and water quality management. The data collection method is done by recording the results of active participation, interviews and observations. Broodstock grouper cantang are maintained in ponds made of concrete with sizes ranging from 150 meter kibik and a depth of 3 meter. Pond cleaning is carried out once or twice a month with the addition of 2 kg of chlorine / 150 tons of water. Grouper broodstock is fed 10 kg for 24 broodstock. feed in the form of trash fish, squid, mackarel, vitamin C and vitamin E. The types of diseases that often attack grouper broodstock are Criptocaryon irritans, Benedia sp and Vibrio alginolyticus. Water quality parameters measured in grouper broodstock ponds are salinity and temperature. The water salinity in broodstock ponds ranges from 34 - 35 ppt and temperatures range from 27-31 derajat celcius.