scholarly journals THE EFFECT OF DENSITY TO THE SURVIVAL RATE, GROWTH AND BIOCHEMICAL COMPOSITION OF FEMALE MANGROVE CRAB (SCYLLA OLIVACEA) CULTIVATED WITH SILVOFISHERY SYSTEM

2020 ◽  
Vol 8 (6) ◽  
pp. 20-25
Author(s):  
Muhammad Yusri Karim ◽  
Khairul Amri ◽  
Hasni Yulianti Azis ◽  
Nurfadilah ◽  
Alimuddin ◽  
...  
Keyword(s):  
Survival Rate ◽  
Biochemical Composition ◽  
Block Design ◽  
The Body ◽  
Mangrove Area ◽  
South Sulawesi ◽  
Mangrove Crab ◽  
Randomized Block Design ◽  
The Difference ◽  
Mangrove Crabs

Mangrove crab silvofishery system is one of the potential aquaculture activities to be developed because it is supported by the availability of extensive mangrove areas. This research was carried out in the Mangrove Area of Mandalle Village, Pangkep Regency, South Sulawesi. The study was aimed to determine the best density of survival, growth, and chemical composition of the body of female mangrove crabs (Scylla olivacea) maintained by the silvofishery system. The research container used a step cage made of bamboo measuring 2.25 m2 wide. Tested animals used were female mangrove crabs measuring 155 ± 1.0 g which were kept for 40 days. The study was designed using a randomized block design consisting of four density treatments with three replications each. The four densities were: 5,10, 15 and 20 crabs/cage. The results of the analysis of variance showed that the difference in density has a very significant effect (p <0.01) on the survival, growth and biochemical composition of the female body of mangrove crabs. The best survival, growth, and biochemical composition produced the best density of 5 and 10 individuals, while the lowest density was 20 individuals.  

scholarly journals The Productivity of Duck in Different Temperature Cage Management

2020 ◽  
Vol 18 (1) ◽  
pp. 43
Author(s):  
Tertia Delia Nova ◽  
Erman Syahruddin ◽  
Rijal Zein
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Body Weight Gain ◽  
Block Design ◽  
The Body ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Cold Temperatures ◽  
Randomized Block Design ◽  
The Difference

This study aims to determine the performance of  ducks on the effect of differences in cage temperature. This study used 54 5-week-old male ducks selected from 66 ducks. The research method used was randomized block design (RBD). The treatment used is the regulation of the temperature of the cage which is divided into three temperature levels, namely: A (cold temperature), B (room temperature), and C (hot temperature). The observed variables were duck performance in the form of feed consumption, body weight gain and feed conversion. The results of this study indicate that the difference in temperature of the cage became a very significant (P<0.01) on the consumption of rations, weight gain and conversion. The results of the study concluded that the maintenance of ducks at three different cage temperatures had a very significant (P<0.01) on feed consumption and body weight gain, but had no effect on feed conversion. The best results were found in the temperature of the cold cage with the consumption of rations of 2964.33 g/head, which resulted in body weight of 711.83 g/head of g/head, and conversion of 4.2. While the body weight of 1437 percentage of carcass was 67.64% in the study. The highest yield IOFC results (income over feed cost) cage in cold temperatures with a profit of Rp. 3,375.15/head. The maintenance of  ducks at three different cage temperatures had no significant effect (P>0.05) on the weight of the spleen, thyroid and kidney and the work of the spleen, thyroid and kidney organs was still normal

The effect of several kinds of baits and moon phases on the catch of mangrove crab (Scylla serrata) with trap

2013 ◽  
Vol 1 (1) ◽  
pp. 45
Author(s):  
Mukhlis A Kaim ◽  
Emil Reppie ◽  
Johnny Budiman
Keyword(s):  
Block Design ◽  
Scylla Serrata ◽  
Moon Phase ◽  
Moon Phases ◽  
Mangrove Crab ◽  
Randomized Block Design ◽  
Different Types ◽  
The Common ◽  
New Moon ◽  
Mangrove Crabs

Trap is one of the common fishing gears used by the fishermen to catch mangrove crabs. Using several kinds of bait could increase the fishing power of the traps. The objective of this research was to study experimentally the effect of several kinds of trap baits and moon phases toward the capture of mangrove crab. Catch data were collected using 12 units of traps,which operated in the estuary waters of Kalurae Village, Regency of Sangihe Islands. Four kinds of bait were used to trap: scads mackerel (Decapterus macarellus), little tuna (Euthynnus sp.), trevally(Caranx sp.) and chicken innards. Data were analyzed by randomized block design. Analysis of variance showed that different types of bait on the trap and moon phase caused highly significant effect on catch. Least significant differences test showed that using scads mackerel bait on the trap was not significantly different from little tuna bait, but differed significantly from trevally and chicken innards baits. Similarly, using little tuna bait was not significantly different from trevally bait, but differed significantly from chicken innards bait; and trevally bait was not different from chicken innards bait. Catching mangrove crabs with traps should use scads mackerel and little tuna baits, and be operated around the new moon phase© Bubu merupakan alat tangkap yang umum digunakan nelayan untuk menangkap kepiting bakau. Penggunaan beberapa jenis umpan, diduga dapat meningkatkan fishing power dari alat tangkap bubu. Penelitian ini bertujuan mempelajari pengaruh jenis umpan bubu dan fase umur bulan di langit terhadap hasil tangkapan kepiting bakau; dikerjakan dengan metode eksperimental. Data tangkapan dikumpulkan dengan mengoperasikan 12 unit bubu, di perairan estuari Kampung Kalurae, Kabupaten Kepulauan Sangihe. Empat jenis umpan yang diperlakukan, yaitu ikan layang (Decapterus macarellus), tongkol (Euthynnus sp.), selar (Caranx sp.) dan jeroan ayam. Data dianalisis berdasarkan Rancangan Acak Kelompok. Analisis Sidik Ragam menunjukkan bahwa perbedaan jenis umpan pada bubu dan fase umur bulan berpengaruh sangat nyata terhadap hasil tangkapan. Uji Beda Nyata Terkecil menyatakan bahwa penggunaan jenis umpan layang pada bubu tidak berbeda nyata dengan umpan tongkol, tetapi berbeda sangat nyata dengan penggunaan umpan selar dan umpan jeroan. Demikian juga penggunaan umpan tongkol tidak berbeda nyata dengan umpan selar, tetapi berbeda sangat nyata dengan umpan jeroan; sedangkan penggunaan antara umpan selar dan jeroan tidak ada perbedaan yang nyata. Umpan ikan layang dan ikan tongkol serta fase umur bulan I dan fase IV memberikan hasil tangkapan kepiting bakau yang lebih baik©

Penetapan Kebutuhan Harian Pakan Ikan Rucah untuk Penggemukan Kepiting Bakau Scylla paramamosain di Keramba Jaring Dasar

2016 ◽  
Vol 1 (1) ◽  
pp. 75
Author(s):  
Sandi Permadi ◽  
Sri Juwana
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Scientific Information ◽  
The Body ◽  
Scylla Paramamosain ◽  
Fish Feed ◽  
Mangrove Crab ◽  
Trash Fish ◽  
Mangrove Crabs ◽  
Net Cages

<strong>Determination of Daily Requirement of Trash Fish Feed to Fatten The Mangrove Crab Scylla paramamosain in Bottom Net Cages.</strong> Mangrove crab fattening is part of the crab farming activities that attracts the interests of the farmers due to its relatively short period, i.e. 14–21 days per cycle. Trash fish is a natural feed for Mangrove crabs that is easily available at an affordable price. Scientific information on the daily requirement of trash fish feed to fatten the Mangrove crabs is still scarce. The accessable scientific information on the amount of daily feeding is still limited to the rearing of the crabs. Hence, the scientific study on the daily requirement of trash fish feed for crab fattening needs to be done. Probolinggo is one of the producing districts for Mangrove crabs and is a potential area for development of crab aquaculture. Therefore, Probolinggo was chosen as the site of this research. Crab samples utilized had a carapace width of 8–13 cm and a weight of 115–500 g. Crabs were reared in bottom net cages measuring 5 x 5 m2 with a density of 16 crabs/cage and the sex ratio of 1: 1. The study consisted of 4 treatments with 3 repetitions. The daily feeding percentages given were 10, 15, 20, and 25% of the body weight of the crabs. The parameters observed during the 13 days of experiment were growth, survival rate, and the percentage of already fatter crabs. The results showed that the daily feed ration of trash fish, as much as 10% dan 15% of the body weight of the crab, gave the best yield for crab fattening. The survival rate obtained was 70% of the initial density of 0.64 crabs/m2, with a total weight gain of 14% during the study. <br /><br />

scholarly journals Populasi Hama dan Musuh Alami pada Tiga Cara Budidaya Padi Sawah di Sukamandi

Agrikultura ◽  
2018 ◽  
Vol 29 (1) ◽  
pp. 35
Author(s):  
N. Usyati ◽  
Nia Kurniawati ◽  
Ade Ruskandar ◽  
Oco Rumasa
Keyword(s):  
Natural Enemy ◽  
Block Design ◽  
Rice Variety ◽  
Rice Cultivation ◽  
Limiting Factors ◽  
Pest Damage ◽  
Organic Rice ◽  
Randomized Block Design ◽  
Rice Yields ◽  
The Difference

ABSTRACTPest and natural enemy population in three different rice cultivation in Sukamandi RegionSome on limiting factors in rice production include the cultivation system and pest damage. To suppress the damage, several control techniques have been applied, such as technical culture. The aim of this study was to gain information on population and pest damage, as well as natural enemy population in three different rice cultivation systems. The study was arranged in Randomized Block Design with three treatment and 9 replications. The treatments were: 1) organic rice cultivation, 2) semi organic, and 3) farmer technique. The used rice variety was Inpari 30. The plot size was 6 m x 90 m. The variables observed included population and pest damage, natural enemy population, and rice yields. Thirthy two rice hills were observed randomly in diagonal direction, with 2 weeks interval from two weeks after transplanting until harvest. The data were analyzed by analysis of variance (Anova) and the difference among the treatments was evaluated with Duncan multiple area test at 5% level. The results showed that brown plant hoppers population on organic rice cultivation is lower than semi-organic rice cultivation and farmer technique, but there were no difference of natural enemy population among treatments. The lowest yield was obtained from the organic rice cultivation (2.67 t/ha).Keywords: Rice cultivation, Pests, Natural enemiesABSTRAKBeberapa faktor pembatas produksi padi diantaranya adalah cara budidaya dan adanya serangan hama. Untuk menekan serangan hama, beberapa teknik pengendalian telah diterapkan diantaranya adalah pengendalian secara kultur teknis (cara budidaya). Pada MT-2 tahun 2016, penelitian dengan tujuan mendapatkan informasi mengenai populasi dan serangan hama, serta populasi musuh alami pada tiga cara budidaya padi telah dilakukan di lahan kebun percobaan Balai Besar Penelitian Tanaman Padi Sukamandi. Rancangan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan tiga cara budidaya dan diulang sebanyak sembilan kali. Adapun cara budidaya yang digunakan terdiri atas:1) budidaya padi organik; 2) semi organik; 3) cara petani. Varietas yang digunakan adalah Inpari 30. Ukuran plot 6 m x 90 m. Variabel yang diamati meliputi populasi dan tingkat serangan hama, populasi musuh alami, dan hasil panen. Pengamatan dilakukan secara langsung di pertanaman pada 32 rumpun sampel secara acak diagonal dengan interval dua minggu sekali mulai umur tanaman dua minggu setelah tanam sampai menjelang panen. Data yang diperoleh dianalisis dengan analisis ragam (Anova) dan perbedaan antar perlakuan dievaluasi dengan uji wilayah berganda Duncan pada taraf 5%. Hasil penelitian menunjukkan bahwa populasi hama wereng coklat pada cara budidaya padi organik lebih rendah dibandingkan cara budidaya padi semi organik dan budidaya padi cara petani, tetapi tidak ada perbedaan populasi musuh alami pada cara budidaya padi organik, cara budidaya padi semi organik dan budidaya padi cara petani. Hasil panen terendah (2,67 t/ha) terlihat pada perlakuan budidaya padi organik.Kata Kunci: Budidaya padi, Hama, Musuh alami

scholarly journals The Tolerance of Several Hybrid Corn (Zea mays L.) Varieties Type on Cob Rot in the Plateau of Simalungun Regency

2020 ◽  
Vol 8 (03) ◽  
pp. 289-295
Author(s):  
Warlinson Girsang ◽  
Rosmaria Girsang
Keyword(s):  
Plant Height ◽  
Zea Mays L ◽  
Block Design ◽  
Hybrid Corn ◽  
Randomized Block Design ◽  
Tolerant Variety ◽  
Different Types ◽  
The Difference ◽  
Rot Disease ◽  
Number Of Seeds

The research was carried out in Dolog Masagal Subdistrict, Simalungun Regency, altitude ± 1.100 m above sea level. The research was conducted from January to May 2019. The purpose of this study was to determine the tolerance level of several hybrid corn varieties to cob rot disease. Methods for conducting the research used randomized block design (RBD) with 1 factor. Types of hybrid corn varieties tested were: Pioneer 29 (V1), NK 99 (V2), Pioneer 12 (V3), NK 22 (V4), Pioneer 4 (V5), Nusantara I (V6), Asia 1 (V7).The parameters observed were: plant height, cob diameter, cob length containing seeds, number of seed rows per cob, number of seeds per row, number of seeds per cob,  husk cover in cob, cob rot intensity, the amount of dry production per plot, and the weight of 1.000 seeds. Based on the research results, different types of hybrid corn varieties produce different tolerances of cob rot resistance in the Simalungun highlands. The most tolerant variety of cob rot disease is Pioneer 29 (mild damage scale = 0 - 10%). Different types of varieties planted also affect various components of growth and production, among others: plant height, number of seeds per row, number of seed rows per cob, husk cover on cob, dry production per plot, and weight of 100 grains. As for the parameters of cob diameter, cob length containing seeds and the number of seed rows per cob, the difference in varieties did not significantly affect.

scholarly journals Supplementation Of Concentrate With Different Levels Of Protein On Nutrient Intake, Digestibility And Growth Of Red Chittagong Heifers

1970 ◽  
Vol 37 (1) ◽  
pp. 10-16
Author(s):  
S Barua ◽  
MJ Khan ◽  
AKFH Bhuiyan ◽  
MN Islam ◽  
SS Islam
Keyword(s):  
Block Design ◽  
Control Diet ◽  
Live Weight ◽  
Concentrate Supplementation ◽  
Protein Levels ◽  
Randomized Block Design ◽  
Concentrate Mixture ◽  
The Difference ◽  
Dietary Treatments ◽  
Different Levels

The study was undertaken to investigate the effects of concentrate supplementation with different protein levels on intake, digestibility and growth performance of Red Chittagong (RC) heifers fed urea molasses straw (UMS) based diet. Twelve RC heifers having average live weight of 124.83±43.15 kg and aged between 8 to 14 months were selected for 90 days feeding trial. Animals were divided into four groups having three animals in each and were randomly assigned to four dietary treatments in a Randomized Block Design (RBD). The experimental diets were formulated using urea molasses straw (UMS), German grass (Echinochloa grousgalli) with or without concentrate mix (having different levels of protein). All the animals received UMS ad libitum and German grass at the rate of 20% of total DM intake. In addition to UMS and German grass of control diet T0, animals on diets T1, T2 and T3 were supplied with concentrate mixture at the rate of 10% of DM intake containing 15, 20 and 25% CP, respectively. Average daily DM intake was 2.65, 3.06, 2.62 and 2.86 kg/100 kg LW for diets T0, T1, T2 and T3, respectively and the difference was non significant (P>0.05). The digestibility of DM, CP, EE, NFE and digestible nutrients (DCP, DEE and DNFE) for diets T1, T2 and T3 was significantly higher than those for diet T0. The daily average liveweight gain of RC heifers fed diets T0, T1, T2 and T3 were 100, 275, 333 and 291 g respectively (P<0.01). Concentrate mixture having 20% crude protein may be supplemented at the rate of 10% of DM intake per day for optimum growth of Red Chittagong heifers. DOI: http://dx.doi.org/10.3329/bjas.v37i1.9861 BJAS 2008; 37(1): 10-16

scholarly journals Effect of starter sources and old fermentation on making nata de whey towards chemical quality

2020 ◽  
Vol 142 ◽  
pp. 04001
Author(s):  
Asmaul Khusna ◽  
Anis Prastujati ◽  
Shinta Setiadevi ◽  
Mustofa Hilmi
Keyword(s):  
Reducing Sugars ◽  
Block Design ◽  
Reducing Sugar ◽  
Cellulose Content ◽  
Chemical Quality ◽  
Fruit Extract ◽  
Fermentation Time ◽  
Randomized Block Design ◽  
Pineapple Fruit ◽  
The Difference

Whey cheese is a by-product of traditional or modern cheese-making processes. The yield of each cheesemaking reaches around 83% of the volume of milk used.whey can be processed into nata de whey by adding Acetobacterxylinum. The purpose of this study were to determine the effect of fermentation duration and differences in starter sources on the chemical quality produced by nata de whey. All samples were analyzed for fat, protein, cellulose and reducing sugars. this use study of two factorial randomized block design. The first factor is the difference in the starter (commercial and pineapple fruit extract) and the second factor is the length of fermentation with three replications. The results showed that the effect of fermentation time and the difference in starter sources on nata de whey had a very significant impact (P <0.01) on the calculation of fat content in the nata the whey. The duration of fermentation and differences in the source of the stater on nata de whey had no significant effect (P> 0.05) on the content of protein, reducing sugar and cellulose content produced.

scholarly journals Karakteristik Fenotipik dan Pengelompokan Jagung Pulut Hibrida Zea mays L. Hasil Persilangan Puncak

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Juhriah Juhriah ◽  
Muhammad Azrai ◽  
Elis Tambaru ◽  
Jum Eka Rahayu
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Block Design ◽  
Experimental Plant ◽  
Phenotypic Characteristics ◽  
Phenotypic Characters ◽  
South Sulawesi ◽  
Randomized Block Design ◽  
Qualitative Characters ◽  
Waxy Corn

This research is the phenotypic characteristics and grouping of hybrid waxy corn Zea mays L. product of the top cross had been carried out in the experimental plant Indonesian Cereals Research Institute (ICERI) in Maros South Sulawesi. This research aims to determine the phenotypic characters of the hybrid of waxy corn Zea mays L. product of the top cross and grouping based on its phenotypic characteristics. This research used a randomized block design (RBD) with 17 th treatments (corn strains) and three replications. Waxy corn strains used were: URI 1 (G8), G8G1, G8G2, G8G3, G8G4, G8G5, G8G6, G8G7, Soppeng (G10), G10G1, G10G2, G10G3, G10G4, G10G5, G10G6, G10G7, and Paramitha.. All data (qualitative and quantitative) are arranged in binary tables and grouped using the NTSYST program. The observations show that the data obtained comes from 14 quantitative characters and 17 qualitative characters. Quantitative data from 14 characters were tested and the results of 10 characters were significantly different and the other 4 were not significantly different. The grouping results show that the 17 corn strains studied formed 3 groups at the similarity coefficient of 0.76. Soppeng's corn is different from the others.

scholarly journals Effectiveness of Organonitrofos Plus Fertilizer on Sweet Corn and Soil Chemical Properties of Ultisols

2016 ◽  
Vol 21 (1) ◽  
pp. 9
Author(s):  
. Dermiyati ◽  
Setyo Dwi Utomo ◽  
Kuswanta Futas Hidayat ◽  
Jamalam Lumbanraja ◽  
Sugeng Triyono ◽  
...  
Keyword(s):  
Zea Mays ◽  
Sweet Corn ◽  
Block Design ◽  
Chemical Properties ◽  
Inorganic Fertilizer ◽  
Soil Chemical Properties ◽  
Corn Production ◽  
Inorganic Fertilizers ◽  
Randomized Block Design ◽  
The Difference

This study aimed to examine Organonitrofos Plus fertilizer (OP) on sweet corn (Zea mays Saccharata L.) and its effect on changes in soil chemical properties of Ultisols. Organonitrofos Plus fertilizer is an enhancement of Organonitrofos fertilizer enriched with microbes at the beginning of the manufacturing process. Research was conducted in the greenhouse of Integrated Agricultural Laboratory of Lampung University. Treatment applied was a factorial of 4 × 2 × 3 with three replications in a randomized block design. The first factor was the dose of OP fertilizer (0, 10, 20, 30 Mg ha-1), the second factor was the dose of inorganic fertilizers (without inorganic fertilizers, and with inorganic fertilizers, namely Urea 0.44, 0.28 SP-36 and KCl 0.16 Mg ha-1), and the third factor was the dose of biochar (0, 10, 20 Mg ha-1). By a single OP fertilizers, inorganic fertilizers, and the interaction between the OP and the inorganic fertilizers increased the weight of dry stover, cob length, cob diameter, cob with husk and cob without husk of corn. OP fertilizers which are applied in Ultisols can improve soil fertility and increase corn production so that OP fertilizer can lessen the use of inorganic fertilizer and can be used as a substitute for inorganic fertilizer. RAE values were highest in treatment of O4K2B2 (30 Mg OP ha-1, with inorganic fertilizer, 10 Mg biochar ha-1) that was equal to 181%, followed by O2K2B3 (10 Mg OP ha-1, with inorganic fertilizer, 20 Mg biochar ha-1 ) with the difference in RAE value of 0.5%. [How to Cite: Dermiyati, SD  Utomo,  KF Hidayat, J Lumbanraja, S Triyono, H Ismono, NE  Ratna, NT Putri dan R Taisa. 2016. Pengujian Pupuk Organonitrofos Plus pada Jagung Manis (Zea mays Saccharata. L) dan Perubahan Sifat Kimia Tanah Ultisols. J Trop Soils 21: 9-17 Doi: 10. 10.5400/jts.2016.21.1.9]

scholarly journals PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG PROLIFIK PADA BERBAGAI JARAK TANAM DALAM BARIS DENGAN SISTEM TANAM JAJAR LEGOWO

2020 ◽  
Vol 4 (1) ◽  
pp. 13-23
Author(s):  
Intan Dwi Lestari
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Stem Diameter ◽  
Growth And Yield ◽  
Area Index ◽  
Plant Weight ◽  
South Sulawesi ◽  
Randomized Block Design ◽  
Number Of Leaves

This research aimed to determine the effect of spacing on the growth and yield of corn. It was conducted from July to November 2019 at the Experimental Plantation of Cereal Crops Research Institute (BalitSereal), Maros, South Sulawesi. The experimental method used was a randomized block design consisting of 4 treatments: J1= (100 cm x 50 cm) x 20 cm, one seed per hole; J2= (100 cm x 50 cm) x 30 cm, alternating between one seed per hole and two seeds per hole; J3= (100 cm x 50 cm) x 40 cm, two seeds per hole; J4= (100 cm x 50 cm) x 15 cm, one seed per hole. The observed variables were plant height, number of leaves, stem diameter, leaf area index, Anthesis Silking Interval (ASI), length of cob 1 and cob 2, diameter of cob 1 and cob 2, weight of shelled seeds/plant, weight of 100 seeds on cob 1 and cob 2, and production of shelled seeds/hectare. The experimental results showed that plant spacing affected the growth and production of maize. The J3 spacing (100 cm x 50 cm) x 40 cm with two seeds per hole significantly affected the leaf area index and gave the highest average stem diameter. The J2 spacing with (100 cm x 50 cm) x 30 cm with alternating between one seed per hole and two seeds per hole produced the highest production in terms of weight of shelled seeds/plant, weight of 100 seeds and yield of shelled seeds/hectare.

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