Jurnal Sains Teknologi dan Lingkungan (JSTL)
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Potensi Kerabang Telur dalam Pakan Ayam Ras Telur Telur
Get PDFThe aim of this research is to know potention of the egg shells mill in ration toweard eggs production and Quality of the layer chiken. This research was conducted in August 2020 at Apitaik West Lombok, laboratory of Animal nutrition Animal Husbandri Mataram Univercity and laboratory of BPTP East Nusa Tenggara. 75 of layer chiken devide into 5 treatment was PI (0%Â egg shells +50% yellow corn +16% rise bren and 36% KLKS consentrat), P1I (5% eggs shells +50% yellow corn +16% rise bren and 36% KLKS consentrat), P1II (7% eggs shells +50% yellow corn, 36% KLKS consentrat) +16% rise bren), 5 replicetes and each replicates use 5 layer chiken and all of treatment give iso protein and iso energy ration. The parameter in this reaserch was eggs production, feed comsumtion, feed convertion, eggs weight and eggs quality. The result of this research were analysis by varians analysis above completely randomized design (CRD). The result showed that eggs producktion, eggs weight, feed cosumtion and feed convertion non significant effect (P>0.05), but was significant effect (P<0.05) on weight and thick of eggs shell It was concluded that giving egg shells to a level of 7.5% in the feed had enough potential to increase egg production and quality of laying hens with relatively good feed efficiency.Â
Periode Kritis Jagung Manis Berkompetisi dengan Gulma Pada Entosil Lombok Tengah
Get PDFWeeds are not always detrimental to plants, because there is a period of time when they are most influential on plant growth and yield and a period of time when weeds are present is called critical piriode. A research aimed to determine the critical period of sweet corn with weeds in Central Lombok entisoles. The experimental research method with experiments in the field used a randomized block design (RBD), which consisted of 12 treatments, weed-free plants (TBG) from planting to age, 10;20;30;40;50 and 60 days and the plants were allowed to roll (TG). since planting until the age of 10;20; 30; 40;50 and 60 days. The results showed that the presence of tolerable weeds on sweet corn plants was only until the age of 30 days after planting. Weeds must be weeded after the plants are between 30-40 days old, if done after the plants are 40 days old, the crop yields cannot be saved. The critical period for sweet corn competing with weeds on the Lombok Tengan entisol is in the age range between 30-40 days after planting. Plants that compete with weeds for 40, 50, and 60 days after planting (until harvest) experience a decrease in yield of 60.32%, 82.84% and 98.66%. Meanwhile, plants that did not compete (weed free) for only 10, 20 and 30 days experienced a decrease in yield of 98.61%, 80.16% and 61.40%.Â
Evaluasi Kualitas Spermatozoa Ayam Brahma, Cochin dan Bangkok Sebagai Dasar Penerapan Teknologi Inseminasi Buatan pada Ayam Kampung
Get PDFResearch on the evaluation of the spermatozoa quality of Brahma, Cochin and Bangkok chickens as the basis for the application of artificial insemination technology in native chickens has been carried out. The purpose of this study was to evaluate the spermatozoa quality of Brahma, Cochin and Bangkok rooster as the basis for determining the spermatozoa dose for artificial insemination in local chickens. method research was used a completely randomized design (CRD) with three treatments, that is: Brahma, Cochin and Bangkok rooster. Each treatment was repeated five times. Cement storage is carried out by inserting an artificial vagina into the cloaca of the rooster and stimulating it to climb the hen. The collected sperm were analyzed at the Animal Reproduction Laboratory, Faculty of Animal Science, Mataram University. The variables observed included motility, viability and morphology of spermatozoa. The results of studied that the spermatozoa motility of Brahma, Chicin and Bangkok rooster were 72 ± 2.74%. 74 ± 2.24% and 73 ± 2.74% (P> 0.05) respectively; The spermatozoan viability of Brahma rooster and Bangkok rooster was 99.2 ± 1.30%, 99.4 ± 0.55% and 99.2 ± 1.10% (P>0.05)respectively. The spermatozoan morphology of brahma rooster, chicin rooster and Bangkok rooster was 94.6 ± 2.30%, 94.4 ± 2.70% and 97.4 ± 2.07% (P> 0.05), respectively. Cochin rooster and Bangkok rooster respectively, 62.6 ± 7.92 x 107, 57 ± 5.83 x107 , and 65.2 ± 12.28 x107, respectively. The results of the study concluded that Brahma, Cochin and Bangkok rooster had good sperm quality and could be able to used in artificial insemination of Kampung hens
Kekerasan Produk Metalurgi Serbuk Berbahan Limbah Aluminium dengan Metode Kompaksi Bertahap
Get PDFThe product resulting from the powder metallurgy process has advantages in terms of mechanical properties and physical properties. Material engineering by mixing several types of metal powders is very possible to do. The composition of this powder metallurgical process material is a mixture of aluminum powder (80%), copper powder (15%) and silicon carbide powder (5%) by weight then compacted with a compaction load gradually, starting with a load of 3 tons, holding for 3 minutes, followed by a load of 3 tons. 4 tons were held for 3 minutes and the last 5 tons were held for 3 minutes by pre sintering 1250C. Sintering in the  kitchen with temperature variations of 4500C, 5000C and 5500C and sintering time for 60 minutes. Tests carried out on the specimens were hardness tests using the Rockwell (HRF) method. The results showed that the hardness of a single material has a hardness of around 35 HRF. The average hardness of the mixed material at a sintering temperature of 4500C is 80 HRF. The hardness of the mixed material at a sintering temperature of 5000C on average is 74 HRF. Meanwhile, the hardness of the mixed material at a sintering temperature of 5500C averaged 52 HRF. It can be concluded that the application of heat at the time of compaction and the selection of the sintering temperature greatly affect the hardness of the product resulting from the powder metallurgy process. Â
Karakteristik Fisik Edible Film Pati Jagung (Zea mays L) Termodifikasi Kitosan dan Gliserol
Get PDFEdible film is a thin layer that is used as a substitute for synthetic plastic or used as a primary packaging of food product. Corn starch that is suspended with chitosan and glycerol is able to improve the quality of edible film. The purpose of this research is to determine the physical characteristics of edible film from modified corn starch. The concentrations of chitosan used were 15%, 20% and 25%, and glycerol were 30% and 40%. Physical characteristics of edible film observed were thickness, absorption, solubility and film degradation. The thickness of the film ranges between 0.06-0.14 mm. The best treatment for film absorption, solubility and degradability is obtained from the addition of 15% chitosan and 40% glycerol, whilst the lowest was from 25% chitosan and 30% glycerol. plastics, thickness, absorption, solubilityÂ
Daya Hambat Krim Minyak Atsiri Herba Boborangan (Hyptis brevipes) sebagai antibakteri terhadap Staphylococcus aureus
Get PDFBoborongan (Hyptis brevipes) is empirically used in ethnomedicine containing of essential oil which it is applied to inhibit the growth of the Staphyllococcus aureus. Cream preparation along with oil in water emulsion is often applied due to easiness and compliance particulary for  cosmetic and aesthetic use. This study aimed to determine the minimum inhibitory concentration of cream based essential oil of Hyptis brevipes against Staphylococcus aureus. Essential oil from Hyptis brevipes was isolated using the water vapor distillation method. Cream based essential oil of Hyptis brevipes of 0.1%, 0.2%, and 0.4%, respectively. Antibacterial activity study was carried out using a well diffusion method. Antibacterial inhibition was obtained by measuring the clear zone on the medium. The results of the antibacterial inhibition test showed that the cream based Hyptis brevipes essential oil along with concentration of 0.1%, 0.2%, and 0.4% showed antibacterial activity with the diameter of inhibition zone are 5.3 mm; 5.1 mm; and 6 mm, respectively. Therefore, it prooved that the essential oil of Hyptis brevipes was a promising candidate for antibacterial substanc
Konversi Empiris Summary Magnitude, Local Magnitude, Body-Wave Magnitude, Surface Magnitude, dan Moment Magnitude Menggunakan Data Gempabumi 1922-2020 di Nusa Tenggara Barat
Get PDFThe existence of magnitude type variation from existing earthquake catalogue sources show that uniforming process is necessary. Beside that these type of magnitude will saturates in certain value, which are different with moment magnitude (Mw) which is not saturated and can describe earthquake process better. Our research initially did compatibility test between summary magnitude which is largely used by BMKG with other magnitude type. Furthermore, the purpose of our research is determination of empirical relation between magnitude type summary magnitude (M), local magnitude (ML), body-wave magnitude (mb), dan surface magnitude (Ms) which are usually used by earthquake catalogues to Mw. Method used in this research is linear regression using data set from BMKG, ISC-EHB, USGS, and Global CMT catalogues with are limited in West Nusa Tenggara and surrounding area. Data used in this research contains of 24.703 earthquake events during period May 9th 1922 until June 27th 2020. The result of this research shows there was good relation between M magnitude type with others magnitude type. Our research also found a conversion formula of M, ML, MLv, mb, and Ms to Mw with well-defined correlation
Kajian Kualitas Pelayanan Menuju Peningkatan Kepuasan Pelanggan Eksternal Fakultas Pertanian Universitas Mataram
Get PDFThe purpose of this study was to measure the service quality of the implementing unit of higher education institutions, to measure the level of external customer satisfaction, and to analyze the relationship between service quality and external customer satisfaction levels. To achieve these objectives, research was carried out by combining observation methods, distributing questionnaires to 200 external customers, focus group discussions, and public consultations. As the unit of analysis in this study, external customers consist of parents of students, alumni, graduate users, and cooperation partners. The collected data were analyzed using descriptive statistical analysis, and non-parametric statistical analysis, namely Spearman rank correlation. The results showed: the service quality of higher education implementing units is identical to the level of satisfaction of external customers; achievement of the level of external customer satisfaction is from good to very good; external customer satisfaction of alumni and graduate users is in a good position, while external customers of students' parents and cooperation partners are in a very good position.Â
Performan Produksi dan Kapasitas Suplay Sapi Bali Bibit dan Potong di Kabupaten Lombok Barat, Nusa Tenggara Barat
Get PDFThis research was conducted in West Lombok Regency with the aim of knowing the production performance and supply capacity of Bali cattle seeds and beef in West Lombok district. The research was conducted by survey method. The research sample consisted of farmers and the livestock they kept. This research was conducted in two sub-districts and three sample villages were selected for each sub-district. The number of samples is 60 farmer respondents. The variables observed included body weight, body size, birth rate, mortality rate, calf harvest, calving period and age of rejection. The data collected were analyzed descriptively. To determine the level of production and supply capacity of Bali cattle, seeds and cuts, the data were analyzed using Dania guidelines. Structure The population of Bali cattle consists of 33.33% calves, 21.21% young and 45.45% adults with a child harvest rate of 26.97% and a mortality rate of 2.49% of the population. The average body weight of Bali cattle in West Lombok Regency, weaning calf, young and adult, respectively, is 129.65, 247.98 and 275.75 kg adults with gumba height, 99.08 weaning calves, 112.75 young and adults 118.45 cm. The supply capacity of breeder cattle and beef cattle in West Lombok Regency is 24.28% of the population, consisting of 6.51% beef cattle and 17.76% breed cattle.Â
Defisit Air Pada Berbagai Fase Pertumbuhan dan Pengaruhnya Terhadap Karakter Kuantitatif Beberapa Genotipe Kacang Tanah
Get PDFThis study aims to determine the effect of water deficit at various phases of plant growth on the quantitative characters of several peanut genotypes. This study used a completely randomized design-split plot design. The water deficit consisted of 6 treatments: d0 = no water deficit, d1 = water deficit from germination to harvest, d2 = water deficit from germination to age 25 days after planting (dap) (vegetative phase), d3 = water deficit from age 26 to 50 dap (flowering phase to pod formation), d4 = water deficit from age 51 dap to 75 dap (seed filling phase), and d5 = water deficit from age 75 dap to 100 dap (seed ripening phase until harvest). The peanut genotype used consisted of 10 genotypes. The results showed that water deficit in various phases of plant growth resulted in different quantitative characters in several peanut genotypes. Genotype G3T4 produced heaviest dry pod weight of 12.7 g plant-1 in water deficit from germination to harvest. Genotype G200-I produced heaviest dry pod weight of 11.5 g per plant-1 in water deficit in the vegetative phase. Genotype G3T4 produced heaviest dry pod weight of 13.3 g per plant in water deficit the generative phase. Genotype G300-II produced heaviest the dry pod weight of 11.7 g per plant-1 in the water deficit of the seed filling phase. Genotypes G2D2, G2T3 and G200-I produced the heaviest dry pod weight of 11.0 g per plant-1 in the water deficit of the seed ripening phase