scholarly journals Pengaruh Ketebalan Media Budidaya Cacing Sutra (Tubifex sp.) Menggunakan Lumpur Limbah Budidaya Lele

2017 ◽  
Vol 19 (2) ◽  
pp. 97
Author(s):  
Dindin Suryadin ◽  
Senny Helmiati ◽  
Rustadi Rustadi

This research aims to know the influence of the thickness of catfish culture waste on silk worm (Tubifex sp.) biomass. The research was conducted with culturing Tubifex sp. in different thickness media of the waste as treatments. The treatments consist of the waste 2, 4, 8 and 12 cm thickness of medium with 6 cm depth. The stock densities 150 g/m3 with average weight 0.0062+0.00032 g. The parameter that analyzed is biomass and population of Tubifex sp.. Data analyzed by analysis of variance and posthoc test is Duncan’s Multiple Range Test. The result shows that diversification of medium thickness gives the real influence (P<0.05) to Tubifex sp. biomass. The highest biomass 1745.14±143.77 g/m3 and population 233,848.46±19265.61 ind./m3 on the treatment with 8 cm thickness. The relationship between treatment and biomass production of Tubifex sp. is quadratic relationship with y = -30.405x2 + 552.18x – 823.55. The optimum thickness of medium that results maximum biomass production is 9.1 cm.

2007 ◽  
Vol 4 (1) ◽  
pp. 97
Author(s):  
Salleh Mohd Radzi ◽  
Mohamed Amran ◽  
Abdul Razak Aziz ◽  
Azlan Supardi

The major purpose ofthis study was to examine the relationship of strategy and structure. Porter s(/980) strategic typology was utilized to classify hotel firms by strategic orientation; and, an analysis of variance was performed to determine the differences in their performance. Structural Equation Modeling was used to confirm the factors underlying the strategy and structure constructs.


1972 ◽  
Vol 31 (2) ◽  
pp. 483-486 ◽  
Author(s):  
John Fracchia ◽  
Charles Sheppard ◽  
Joseph Pintyr ◽  
James Crovello ◽  
Sidney Merlis

The relationship between authoritarian attitudes, which reflect the belief that mentally ill persons comprise an inferior class requiring coercive handling, and personal adjustment was examined for 77 female psychiatric aides at a large state mental hospital. Correlations and analysis of variance suggested the lack of a systematic association between the two variables.


1996 ◽  
Vol 79 (3_suppl) ◽  
pp. 1387-1390 ◽  
Author(s):  
Varghese I. Cherian ◽  
Lily Cherian

To study the relationship of parents' attitudes towards teachers, school, and education with the academic achievement of their children, a questionnaire was given to the parents of 1021 Standard 7 pupils (369 boys and 652 girls) randomly chosen from the Standard 7/Year 9 population of 14,765 boys and 26,109 girls. Analysis of variance indicated a positive relationship between parents' attitudes and the academic achievement of their children regardless of whether the children's parents were deceased or alive.


2014 ◽  
Vol 44 (2) ◽  
pp. 279-286 ◽  
Author(s):  
Francisco Teixeira Andrade ◽  
Márvio Lobão Teixeira de Abreu ◽  
João Batista Lopes ◽  
Agustinho Valente de Figueiredo ◽  
Maria de Nazaré Bona Alencar Araripe ◽  
...  

Body composition analysis is relevant to characterize the nutritional requirements and finishing phase of fish. The aim of this study was to investigate the relationship between ichthyometric (weight, total and standard length, density and yields), bromatological (fat, protein, ash and water content) and bioelectrical-impedance-analysis (BIA) (resistance, reactance, phase angle and composition indexes) variables in the hybrid tambatinga (Colossoma macropomum × Piaractus brachypomus). In a non-fertilized vivarium, 520 juveniles were housed and fed commercial rations. Then, 136 days after hatching (DAH), 15 fish with an average weight of 37.69 g and average total length of 12.96 cm were randomly chosen, anesthetized (eugenol) and subjected to the first of fourteen fortnightly assessments (BIA and biometry). After euthanasia, the following parts were weighed: whole carcass with the head, fillet, and skin (WC); fillet with skin (FS); and the remainder of the carcass with the head (CH). Together, FS and CH were ground and homogenized for the bromatological analyses. Estimates of the body composition and yields of tambatinga, with models including ichthyometric and BIA variables, showed correlation coefficients ranging from 0.81 (for the FS yield) to 1,00 (for the total ash). Similarly, models that included only BIA variables had correlation coefficients ranging from 0.81 (FS and CH yields) to 0.98 (for the total ash). Therefore, in tambatinga, the BIA technique allows the estimation of the yield of the fillet with skin and the body composition (water content, fat, ash, and protein). The best models combine ichthyometric and BIA variables.


2021 ◽  
Vol 1 (3) ◽  
pp. 213-221
Author(s):  
Rosa Abidin ◽  
Rina Mariana ◽  
Teti Setiawati

The parts of the starfruit plant, namely the leaves and fruit of the starfruit, have the potential to be made into a functional drink. Efforts that have been developed to use the leaves and fruit of starfruit are herbal medicine. This study aims to determine the chemical properties (antioxidant capacity and tannin content), physical properties (color) and differences in the selling price of the herbal medicine for starfruit leaves with different leaf and fruit ratios. The research design used was a completely randomized design (CRD) with a factor of different ratios between leaves and fruit with two repetitions. Data were analyzed using ANOVA (Analysis of Variance). If there are differences, then proceed with the Duncan Multiple Range Test (DMRT). The results showed that the highest antioxidant capacity and tannin content of starfruit leaves were found in the ratio of 80 percent: 20 percent herbal medicine. The highest color brightness (L) is found in the herbal ratio 60 percent: 40 percent. The redness color (a -) is in the ratio 80 percent: 20 percent and the yellow color (b +) is the highest in the ratio of 60 percent: 40 percent herbal medicine. Bagian tanaman belimbing wuluh yaitu daun dan buah belimbing wuluh sangat berpotensi untuk dibuat minuman fungsional. Upaya yang dikembangkan untuk pemanfaatan daun dan buah belimbing wuluh adalah sebagai jamu. Penelitian ini memiliki tujuan untuk mengetahui sifat kimia (kapasitas antioksidan dan kadar tanin), sifat fisik (warna) dan perbedaan harga jual jamu daun belimbing wuluh dengan rasio daun dan buah yang berbeda. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan faktor yaitu rasio yang berbeda antara daun dan buah dengan dua kali pengulangan. Data dianalisis menggunakan ANOVA (Analysis of Variance). Jika terdapat perbedaan, maka dilanjutkan dengan Duncan Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa kapasitas antioksidan dan kadar tanin jamu daun belimbing wuluh tertinggi terdapat pada rasio jamu 80 persen: 20 persen. Kecerahan warna (L) tertinggi terdapat pada rasio jamu 60 persen: 40 persen. Warna kemerahan (a+) terdapat pada rasio 80 persen: 20 persen dan warna kuning (b+) tertinggi terdapat pada rasio jamu 60 persen: 40 persen.


Author(s):  
Abdullah Salem Ahmad Alomari

The present study aimed to reveal the relationship between the quality of space programs watched by children and the social skills of these children،  the study is also trying to identify the relationship between the number of hours watching this space programs and the social skills for these children. The study used a descriptive approach،  the study sample consisted of 215 boys and girls aged between 9- 12 years schools of Al- Dammam in Saudi Arabia،  the researcher used to identify children's programs television watched by children،  where the researcher in this study on the method of analysis of variance One-way Analysis of Variance and Scheffe test for multiple comparisons Multiple Comparison،  which resulted in findings on the lack of social skills for different dimensions: emotional sensitivity،  emotional and adjustment،  and the overall degree of social skills depending on the type of space programs that children watch. In addition to the lack of different social skills for the dimensions: emotional expression،  sensitivity،  emotionality،  and social expression،  and social sensitivity،  and the overall degree of social skills،  while the different settings of emotional and social adjustment depending on the number of hours watching TV channels،  for children who watch satellite channels less.


2021 ◽  
Vol 20 (3) ◽  
pp. 556
Author(s):  
Muhammad Mustarsidin ◽  
Syachruddin AR ◽  
Ahmad Raksun

Plants that can be used as pesticides are Gadung tubers. Gadung tubers contain cyanide acid to kill armyworm pests because they contain dioscorin toxins which can cause nervous disorders. The purpose of this study was to determine the effect of Gadung tuber extract (Dioscorea hispida) on Caterpillar mortality (Spodoptera exigua) in Shallot plants. This type of research is experimental research. This study used a completely randomized design (CRD). The sample used was 5 caterpillars (Spodoptera exigua) in each polybag with 5 repetitions for each concentration of Gadung tuber extract, namely 0%, 0.5%, 1.0%, 1.5%, 2.0% and 2.5%, so the total Caterpillar used was 150 Caterpillars. Gadung tuber extraction was carried out by maceration method with methanol solvent. Data were analyzed using a one-way analysis of variance at the 95% significance level, followed by DMRT (Duncans Multiple Range Test). The results showed that the Gadung tuber extract had a significant effect on the mortality of caterpillars (Spodoptera exigua) because the F count was greater than the F table (45.40>2.62), and the DMRT test results showed that the optimal concentration of Gadung tuber extract was 2.5%. Therefore, it can be concluded that the extract of Gadung tuber (Dioscorea hispida) affects the mortality of Caterpillars (Spodoptera exigua) in Shallots (Allium cepa).


2020 ◽  
Vol 3 (1) ◽  
pp. 74
Author(s):  
Safitra Safitra ◽  
Asnani Asnani ◽  
Sri Rejeki

Chemical characteristics of Silage Flour from Tuna Fish Waste (Thunnus sp.) with cornflour additionABSTRACT         The purpose of this study was to determine the chemical characteristics and the effect of the addition of cornflour to tuna waste silage flour.  This study used a Completely Randomized Design (CRD) consisting of four treatments, namely TS1 (5% addition to corn flour), TS2 (10% adding corn flour), TS3 (15% adding corn flour), TS4 (20% adding cornflour)  ) and repeat three times.  Data from observations were analyzed using ANOVA (Analysis of Variance) at a level of 95%, if there is a real difference (P> 0.05) then a further test was performed with a DMRT (Duncan Multiple Range Test) tests at a 95% level.  The results showed that the effect of adding cornflour to fish waste silage flour had a significant effect on the chemical content test value.  The results of the chemical test of the silage flour show water content between 10.4% -8.4%, ash content of 24.2% -7.9%, protein content of 47.5% -43.3%, and fat content of 4.6  % -2.1%. Keywords: Silage flour, tuna waste (Thunnus sp.), Cornflour and proximate composition.ABSTRAKTujuan penelitian ini adalah untuk mengetahui karakteristik kimia  dan pengaruh penambahan tepung jagung pada tepung silase limbah ikan tuna. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari empat perlakuan yaitu perlakuan TS1 (5% penambahan tepung Jagung), TS2 (10% penambahan tepung jagung), TS3   (15% penambahan tepung jagung), TS4 (20% penambahan tepung jagung) dan ulangan sebanyak tiga kali. Data hasil pengamatan dianalisa menggunakan ANOVA (Analysis of Variance) pada taraf  95%, apabila terdapat beda nyata (P>0,05) maka dilakukan uji lanjut dengan uji DMRT (Duncan Multiple Range Test) pada taraf nyata 95%. Hasil penelitian yang diperoleh menunjukkan bahwa pengaruh penambahan tepung jagung pada tepung silase limbah ikan memberikan pengaruh nyata terhadap nilai uji kandungan kimia. Hasil uji kandungan kimia tepung silase menunjukkan kadar air antara 10,4%-8,4%, kadar abu 24,2%-7,9%, kadar protein 47,5%-43,3%, dan kadar lemak 4,6%-2,1%.Kata kunci: Tepung silase, limbah ikan tuna (Thunnus sp.), tepung jagung serta komposisi proksimat


2016 ◽  
Vol 12 (29) ◽  
pp. 112
Author(s):  
Taleb Mohamed Lamine ◽  
Maatoug M’hamed ◽  
Azouzi Blel ◽  
Zedek Mohamed ◽  
Hellal Benchabane

This study aims to search the relationship between the decline of the Atlas cedar and the eco-dendrometrique factors in the National Park of Theniet El Had located in the north-west of Algeria. This study takes place throughout 30 circular plots of 1.000m2 area in which, a dendrometric measures and ecological data are taken in addition to descriptive data for Atlas cedar trees. The descriptive data shows that 34% of inventoried Atlas cedar have damaged leaves and 30% have more then 25% of their crowns damaged. The analysis of variance shows that there is no relationship between the rate of the Atlas cedar decline ant the ecological factors, components of the soil and dendrometric parameters except for the average circumference witch is influenced by the competition between trees. Therefor, a particular management plan for the regulation of competition is a necessity for this park.


2016 ◽  
Vol 16 (2) ◽  
pp. 69
Author(s):  
Aprilian Adi Nugroho ◽  
Sri Sumarsih ◽  
Bambang Sulistiyanto

ABSTRAK. Penelitian efek penambahan bentonit dalam proses pelleting terhadap total bakteri dan total fungi dari produk pellet limbah penetasan sebagai bahan pakan alternatif, telah dilaksanakan di Laboratorium Teknologi Pakan, Fakultas Peternakan dan Pertanian, Universitas Diponegoro. Penambahan bentonit pada proses pelleting diharapkan mengurangi total bakteri dan total fungi pada pellet olahan limbah penetasan, sehingga aman digunakan sebagai bahan pakan alternatif. Pada penelitian ini limbah penetasan yang berupa cangkang telur, telur infertile, telur gagal menetas, serta DOC afkir dan mati dihancurkan, dicampur dengan bentonit dan dibuat pellet, untuk kemudian dianalisis kandungan total bakteri dan total fungi pada produk pellet. Perlakuan bentonit dilakukan dengan aras 0, 2, 4 dan 6% (B/B). Penelitian dilakukan dengan rancangan acak lengkap (RAL) 4 perlakuan dan 5 ulangan. Data dianalisis dengan analisis ragam dan dilanjutkan dengan uji wilayah ganda Duncan untuk mengetahui perbedaan antar perlakuan. Hasil menunjukkan bahwa pemberian bentonit dari berbagai level berpengaruh sangat nyata (P<0,01). Pemberian bentonit pada tingkat tertinggi (6%) mampu menekan total bakteri dan total fungi pada kisaran 105 cfu/g. Disimpulkan bahwa bentonit mampu menekan kandungan total bakteri dan total fungi pada produk pellet limbah penetasan. (Numbers of total bacteria and total fungi of hatchery waste pellets that made by adding bentonite) ABSTRACT. A Research about the effect of bentonite addition in the pelletizing process on total bacteria and total fungi of pellet product of hatchery waste as an alternative feedstuff, was done at Feed Technology Laboratory, Faculty of Animal and Agricultural Sciences, Diponegoro University. The addition of bentonite was expected to reduce the number of bacteria and fungi in the pellet product of hatchery waste, therefore, it could be used safely as an alternative feedstuff. In this experiment, the hatchery waste in the forms of eggshell, infertile eggs, un-hatched eggs, dead and culled DOC were blended, mixed with bentonite and pelleted,and then the number of total bacteria and total fungi of pellet was analyzed. The treatment was carried out with the level of bentonite i.e. 0, 2, 4 and 6% (w/w). Completely randomized design (CRD)was applied by 4 treatments and 5 replications of each. Data analyzed by analysis of variance (ANOVA), and followed by Duncan multiple range test (DMRT) to determine differences among the treatments. The results showed that administration of bentonite at various levels significantly affect the number of bacteria and fungi in the hatchery waste pellets (P <0.01). Administration of bentonite at the level of 6% shows the highest value on suppressing the content of total bacteria as well as fungi up to the range of total content 105cfu/g. In conclusion, the bentonite was able to suppress the total amount of bacteria and total fungi in the hatchery waste pellets.


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