e-Jurnal Rekayasa dan Teknologi Budidaya Perairan
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Pengaruh Kepadatan Azolla Sp. Yang Berbeda Terhadap Kualitas Air Dan Pertumbuhan Benih Ikan Lele Dumbo (Clarias Gariepinus) Pada Sistem Tanpa Ganti Air
Full text linkThe aims of this research were to determine the effect of Azolla sp. to water quality and the growth of African catfish (Clarias gariepinus) juvenile (total length 5-7 cm) cultured with closed water system. The study used five treatments of density of Azolla sp. (0g/m2, 62.5 g/m2, 125 g/m2, 187.5 g/m2, and 250g/m2). The observations towards water quality and growth parameter were pH, temperature, dissolved oxygen, ammonia, absolute weight growth, absolute growth rate, and survival rate. The results showed that the addition of Azolla sp. provided a significantly different affect to pH, absolute growth weight, daily growth rate, and survival. Survival rate and pH showed that density of 0g/m2 of Azolla sp. significantly different densities to other treatments. Absolute growth weight and daily growth rate of African catfish showed that density of 0g/m2of Azolla sp. significantly different to densities of 62.5g/m2, 125 g/m2, 187.5g/m2, except for the density 250g/m2. Based on temperature, dissolved oxygen, pH, survival rate and daily growth rate of African catfish and Azolla sp. occured at density of 125g/m2 of Azolla sp
Penggunaan Suhu Dan Dosis Propolis Yang Berbeda Terhadap Nisbah Kelamin Ikan Guppy (Poecilia Reticulata)
Full text linkGuppy (Poecilia reticulata) is one of undifferentiated sex species that can direct to produce male during embryogenesis and larvae phase. Temperature is relevant environment factors that affect to gonad differentiation in fish. Propolis is a material from honeybees that has potential to be used in sex reversal to replaced 17α-metiltestosteron. Propolis contains chrysin and galangin with the function inhibited testosteron to estradiol conversion. The aim of this research is to determine the best treatment among different ambient temperature and propolis on different dose. The research was conducted in factorial randomize design, using twelve treatments. The treatments were given to pregnant guppy brood stock for 24 hours that were immersed in interaction of ambient temperature 28; 30 and 32oC with propolis on different dose 0; 25; 75 and 100 µl/l. The result showed that interaction between temperature and propolis showed significant difference in producing male guppy (P<0.05) with high percentage of males equal to 68.72 ± 1.91% in the treatments interaction between temperature 32oC and 25µl/l propolis dose, that has given different significantly with others. The treatments were not stimulate the intersex stocks (P>0.05)
Pengaruh Penambahan Tepung Kepala Udang Dalam Pakan Terhadap Pigmentasi Warna Pada Ikan Koi (Cyprinuscarpiolynn) Jenis Kohaku
No full textKoi as ornamental fish excellence in body shapes with interesting colour. Chromatopore cells took responsibility to colour of fish. Enhancing of colour possible with added of carotenoid source like shrimp head meal in feed. This study purposes to assessed effects of shrimp head meal to enhance colour of koi in different percentages of inclusion (0, 10, 12 and 14 %). Koi in juvenile size, 3 month old, 28 g of body weight and 12 cm of total length used for this study. Five trained persons by used Toca Colour Finder (TCF) justified scores of colour patterns during 60 days of culture. Results showed 10 % inclusion of shrimp head meal optimum in carotenoid those effect to enhances of colour. Positive corelation showed between amount of chromatopore cells and percentage of inclusion of shrimp head meal
Insidensi Infectious Hypodermal And Hematopoietic Necrosis Virus (IHHNV) Dan Infectious Myonecrosis Virus (IMNV) Pada Udang Putih (Litopenaeus Vannamei) Di Pertambakan Sekitar Teluk Lampung Tahun 2010 Dengan Metode Analisis Polymerase Chain Reaction (PCR)
No full textThe purpose of this experiment was to determine the IMNV incidence rate in white shrimp at ponds in Lampung Bay in 2010 and known the pattern of incidence rate from 2007 to 2010. The experiment was conducted on October through December 2010 in culture ponds in the Bay of Lampung and sample examination carried out in Main Center of Mariculture Development of Lampung. The research method was conducted includes, examination of samples by polymerase chain reaction technique and secondary data collection through interviews and data collection, followed by descriptive analysis of data. Prevalence assumption used in this study was 10%. The results showed that there was 7 locations were positive IMNV from 12 locations examination in white shrimp ponds in 2010. The value of incidence was 7.14%, 100%, and 58.33% in 2008, 2009, and 2010, respectively