Effects of Dietary Caulerpa lentillifera Supplementation On Growth Performance and Survival Rate of Milk Fish, Chanos chanos (Forsskål, 1775)

Abstract: The study aimed to investigate the dietary supplementation effect of sea grape, Caulerpa lentillifera, on the growth performance and survival rate of milkfish, Chanos chanos (Forsskål, 1775). Two hundred fish weighing in the range of 0.20-0.25 g/ind were randomly distributed into 20 of 25 L tanks. The 0 (control), 10, 20, 30, and 40 g/kg of Caulerpa lentillifera powder was supplemented into four formulated feeds and then fed for 49 days. The result exposed that the administration of Caulerpa lentillifera powder in the diet provided a significant effect on the absolute weight gain, absolute length gain, specific growth rate, and feed efficiency (P0,05). The optimum specific growth rate, absolute weight, absolute length and feed efficiency were found at treatment C (20 g/kg diet) with the values of 1.597±0.137 %/days, 4.47±0.08 g, 2.98±0.77 cm and 69.86±2.72 %, respectively. Regarding this result, the supplementation of sea grape (Caulerpa lentillifera) at a 20 g/kg diet is recommended to obtain the optimum growth of milkfish (Chanos chanos).Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh suplementasi pakan anggur laut Caulerpa lentillifera terhadap performa pertumbuhan dan kelangsungan hidup ikan bandeng, Chanos chanos (Forsskål, 1775). Dua ratus ikan sampel berbobot berkisar 0.20-0.25 g/ind didistribusikan secara acak ke dalam 20 tangki dengan volume masing-masing 25 L. Tepung anggur laut dengan dosis 0 (kontrol), 10, 20, 30, dan 40 g/kg ditambahkan ke dalam lima formulasi pakan dan diberi makan sebanyak 5% dari biomassa ikan dengan frekuensi 2 kali sehari selama 49 hari. Hasil penelitian menunjukkan bahwa pemberian tepung C. lentillifera dalam ransum memberikan pengaruh nyata terhadap laju pertumbuhan spesifik, bobot mutlak, panjang mutlak dan efisiensi pakan (P0.05). Laju pertumbuhan spesifik, bobot mutlak, panjang mutlak dan efisiensi pakan yang optimum terdapat pada perlakuan C (diet 20 g/kg) dengan nilai 1.597±0.137 %/hari, 4.47±0.08 g, 2.98± 0.77 cm dan 69.86±2.72%. Berkaitan dengan hasil tersebut, disarankan penambahan suplemen anggur laut (C. lentillifera) pada pakan 20 g/kg memberikan pertumbuhan yang optimum bagi ikan bandeng (Chanos chanos)

Microplastic study on (litopenaeus vannamei) cultivation enterprises on the east coast of aceh

Microplastics are small plastics measuring <5mm which, if they enter the water, can contaminate aquatic biota such as shrimp. The research aims to identify the number, shape and color of microplastics in shrimp bodies in vanname shrimp cultivation businesses on the East Coast of Aceh. Shrimp samples were taken from 3 stations, namely Pidie, Pidie Jaya and Bireuen. The samples were measured for weight and length, then prepared using H2O2 and H2SO4 in a ratio of 3:1 20 mL then incubated, heated, then filtered and identified using a Zeiss microscope with 40x magnification. The results obtained from shrimp body samples contained 2 types of microplastics, namely fiber and film. The most dominant microplastics at the three stations were 13 particles in the Pidie location, 9 particles in the Pidie Jaya location and 5 microplastic particles in the Bireuen location. The presence of microplastics that have entered the body of biota in the vannamei shrimp cultivation business is an early warning. So it is necessary to develop research on other consumption biota to determine the presence of microplastics and their impact if consumed by the public

ENDOPARASITES INFECTION IN BLOOD COCKLE (Anadara granosa) IN ACEH BESAR WATERS, INDONESIA

This study aims to investigate the type, prevalence, and intensity of endoparasites infecting the organs of blood cockles (Anadara granosa) in the waters of Aceh Besar, Indonesia. A purposive sampling method was conducted from March to August 2020 consisting of two sampling sites, namely the waters of Ujung Pancu and Krueng Raya. Endoparasite identification and analysis was carried out at the Parasite Laboratory of the Fish Quarantine Center, Quality Control and Safety of Fishery Products in Blang Bintang, Aceh Besar. The results showed that there were two types of endoparasites living in the blood cockles: namely, Perkinsus sp., which belong to the group Protozoa, and Spiroxys sp. of the Nematode class. The prevalence levels of Perkinsus sp. was 73.33% and were found in the waters of Ujung Pancu; while the lowest prevalence level was 20% in blood cockles that were infected with Spiroxys sp., which were found both in Ujung Pancu and Krueng Raya. The highest intensity level was infections of Perkinsus sp. with a value of 89 ind/species in the Krueng Raya site. The lowest intensity value was infections of Spiroxys with a value of 2 ind/species in Krueng Raya and 2.3 ind/species in Ujung Panc

Morphometric analysis of spiny lobster (Panulirus penicillatus) and bamboo lobster (Panulirus versicolor) in Sabang Waters

This research aims to analyze morphometrics of (P. penicillatus) and (P. versicolor) in waters of Sabang. A total of 50 samples from each species of P. penicillatus and P. versicolor were used for morphometric analysis using Traditional Morphometric and Truss Morphometric approaches. Morphological analysis indicated that both lobster species are categorized into two distinct groups. Traditional morphometric character testing using ANOVA showed that species differences significantly influence the variation in morphological characters (P<0.05) in both lobsters. Further Duncan post hoc tests revealed that four characters (HL), (CHW), and (CHL)) differed significantly between the species. P. penicillatus shared three characters similar to P. versicolor, namely (HL), (CHW), and (CHL). This similarity is based on the shape of HL, CHW, and CHL in both lobsters. In the Truss Morphometric character testing with ANOVA, it was found that species differences affect the characters significantly (P<0.05). The Duncan post hoc test revealed that five characters ([A1, A3], [B1, B3], [C5, C6], D4, [D5, D6]) differed significantly between species. DFA resulted in 1 function, with an eigenvalue of 27.595, indicating that it explains 100% of the total variance. The morphological characters that significantly contribute to the differentiation between species are A1, B1, C5, A5, and D5

EFFECT OF SALINITY CHANGES ON METHIONINE CONTENT IN TIGER GROUPER JUVENILE (Epinephelus fuscoguttatus)

This study was conducted to determine the effect of water salinity changes on methionine content in tiger grouper juvenile (Epinephelus fuscoguttatus). A total of 2,560 tiger grouper juveniles were used and divided into five groups consist of 1 control group (without exposed to salinity changes) and 4 treatment groups. The salinity was changed every 2, 3, 4, and 6 hours in treatment A, B, C, and D, respectively. Salinity levels were changed during 24 hours by lowering salinity level from 32 psu to 22 psu. Twenty five of fish were collected from each treatment for methionine content analysis. Data were analysed using one way analysis of variance (ANOVA). The results showed that there was a decrease in methionine content in all treatments. A significant decrease (P0.05) of methionine content in treatment A, B, and C were observed after 20 hours (1.15%), 18 hours (1.27%), and 16 hours (1.24%), respectively. While at 0 hours (control), the methionine content was 2.02%. Methionine level in treatment D was not significantly different (P0.05) compared to control group. As conclusion, rearing the tiger grouper juvenile with salinity fluctuations every 6 hours did not lead to methionine deficiency

Proximate composition and fatty acids profiling of Seahorse originated from Simeulue, Aceh-Indonesia

The aim of this study was to determine the proximate composition, quantitative of fatty acids analysis as well as the content in the seahorse sample, Hippocampus sp which originated from Sibigo waters, Simeulue, Aceh, Indonesia. In this study, proximate composition and fatty acids of seahorse were determined. Based on the proximate analyses that had been conducted, results showed that protein was the most abundantly found in the seahorse (39.32±0.22%), orderly followed by carbohydrate (28.48±0.25%), ash (25.43±0.16%), moisture (6.29±0.13%) (dry weight basis) and fat (0.47±0.30%). Fatty acids profiling and analysis were also conducted by using the a GC-MS (Gas Chromatography-Mass Spectroscopy). The analysis result showed that sample possessed of saturated fatty acids in big size were palmitic acid, stearic acid, myristic acid, and lauric acid. While unsaturated fatty acids were arachidonic acid, linoleic acid and oleic acid. Traces of saturated fatty acids in small seahorse were found in the sample including palmitic acid, stearic acid, miristic acid and lauric acid, while unsaturated fatty acids were linoleic acid and oleic acid. The highest saturated fatty acid in seahorse was palmitic acid (60.67%), and unsaturated fatty acids were oleic acid (45.5%), arachidonic acid (25.08%) and linoleic acid (0.93%)