cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota mataram,
Nusa tenggara barat
INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,520 Documents
 160   161   162   163   164 
The Influence of Turmeric Powder (Curcuminoid) Levels in the Basal Diet on the Performance of Landrace Grower Phase Pigs Djawapatty, David; Due, Maria Serviana; Kowe, Maria Stefania Goo
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8164

Abstract

The prospects for pig farming in Bajawa are very promising, in line with the economic growth and the development of business centers that directly or indirectly support the increase in demand for pork. Several methods can be employed to improve the productivity of pigs in the grower-finisher phase, one of which is through feed improvement by providing alternative ingredients that can enhance nutrient utilization, such as turmeric powder (curcuminoid) as a feed additive. The purpose of this study is to examine the effects of turmeric powder (curcuminoid) supplementation at various levels in the basal diet on weight gain, feed intake, and feed conversion to determine the optimal level of turmeric powder supplementation in the basal diet and to analyze the economic benefits of using turmeric powder as a natural feed additive. The method of this research is an experimental method where there are 4 treatments and 3 replications between pigs given feed with turmeric powder and pigs given feed without turmeric powder. The variables observed include feed consumption, weight gain, and feed conversion. The level of turmeric powder addition in the basal diet affects the weight gain of pigs and the feed conversion value. Treatment R4 (85% feed and 15% turmeric powder) is the most optimal treatment. The research also shows a significant difference in the weight gain results of the pigs among each treatment, and there is a positive relationship between feed conversion and the weight gain of the pigs with a strong correlation category.
The Effect of The Application of Organic Agriculture on Horticultural Crops In Banjarbaru Saputra, Muhammad Hizrian Fauzan; Rizali, Akhmad; Abbas, Saipul
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2b.8165

Abstract

Climate change has posed a major challenge to the agricultural sector, which plays an important role in meeting global food needs. In Indonesia, conventional agricultural practices dominated by the use of chemical fertilizers, pesticides, and herbicides have a negative impact on the environment, such as water, soil, and air pollution, as well as decreasing the quality of the ecosystem. Therefore, the transition to sustainable agricultural systems is an urgent need to maintain ecosystem sustainability. This study uses a mixed method approach by combining quantitative and qualitative data collection techniques. The study was conducted in Banjarbaru to analyze the agricultural practices applied by local farmers. The findings show that the majority of farmers use semi-organic and non-organic methods in the use of fertilizers and pesticides. However, farmers admit that organic products have quality advantages and positive impacts on the environment. Based on the findings, the study provides several recommendations to support the adoption of organic farming, including training and education for farmers, subsidies for organic farming inputs, technical support, infrastructure development by the government, and increased market access for organic products. The recommendations aim to encourage the widespread and sustainable application of organic farming practices, so that they can overcome environmental challenges and improve the sustainability of the agricultural sector.
The Effect of Concentrations Bioherbicide Kirinyuh Leaf Extract to Control The Growth of Teki Weeds Nudin, Fatwa; Nurmayulis, Nurmayulis; Yenny, Ratna Fitry; Putri, Widia Eka
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8167

Abstract

The research was aimed to know the effect of different concentrations bioherbicide of kirinyuh leaf extract to control the growth of teki weeds. This research was conducted from Juny until August 2024 in Sindang Resmi, Purwaraja village, Menes district, Pandeglang city, Banten and Biotechnology Laboratory, Faculty of Agriculture, Sultan Ageng Tirtayasa University. The method used Randomized Completely Block Design with one factor. The factor with five replications to obtain 25 experimental units, namely: 25%, 50%, 60%, 75% and 90% . The results showed that kirinyuh leaf extract 90% has a significant effect for plant height at 5 days after planting (DAP) (4.40 cm), 10 DAP (13.40 cm), 20 DAP (21.60 cm), 25 DAP (26.60 cm) and 30 DAP (27.80 cm). Plant dry weight (6.00 g) and crown dry weight (3.20 g). The treatment of different consentrations of kirinyuh leaf extract showed significant differences on the parameters.
Comparison of Antioxidant Activity Test of Red Dragon Fruit Extract 70% Ethanol Solvent and 96% Ethanol Wiguna, I Made Danuarta; Anak Agung Ayu Niti Wedayani; Restuningdyah, Novia Andansari Putri; Ni Ketut Susilawati; Eka Arie Yuliyani
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8171

Abstract

Super Red Dragon Fruit is known to have various compounds with high antioxidant activity, which are important in preventing or assisting therapies to reduce free radicals in the body. Different types of solvents, including ethanol, can affect the antioxidant levels in dragon fruit compounds. Therefore, it is important to determine the level of ethanol solvent that provides the highest antioxidant activity. This study aims to evaluate the antioxidant activity in red dragon fruit extract using 70% and 96% ethanol solvents and determine whether there is a difference in activity between the two. Using the true experimental method, antioxidant activity in the fruit and skin of red super dragon fruit extracted using two different solvent levels was compared. Based on the shapiro-wilk test which showed a p value of 0.410, it was found that there was no significant difference between the two solvents in terms of antioxidant activity. This result indicates that the antioxidant activity in red dragon fruit extracts with 70% and 96% ethanol solvents has no significant difference.
Effectiveness of Artificial Wistar Rat Cage Size in Accelerating The Occurrence of Dysplasia in The Process of Formaldehyde Induction Kusuma, I Gusti Ketut Artha Jaya; Anak Agung Ayu Niti Wedayani; Restuningdyah, Novia Andansari Putri; Wiguna, Putu Aditya
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8172

Abstract

Cage is a medium used in placing experimental animals in experimental-based studies to serve as learning instruments related to studying the cause and effect to be investigated. The size of the cage can affect several health factors in experimental animals, such as the social level and stress level of the animal. Formaldehyde is a carcinogenic compound that can cause malignancies if exposed continuously to living things. Therefore, the purpose of this study was to determine whether cage size can affect the degree of dysplasia in Wistar rats induced by 40 ppm formaldehyde. This study is a quantitative study that uses a true experimental research design with post-test only control group design. This study used male Wistar rats (Rattus norvegicus) with a total of 15 rats divided into 3 groups, namely, a small cage group with a size of (27.5 x 21.5 x 9) cm3, a medium cage group with a size of (28 x 22.5 x 10) cm3, and a large cage group with a size of (30 x 24 x 11.5) cm3 with a total of 4 treatment rats (formaldehyde 40 ppm) and 1 control rat (untreated) in each group. The treatment given to rats was carried out 6 hours per day and lasted for 12 weeks until all rats were terminated at the same time. The rats were terminated and histopathological observations were made to assess the degree of dysplasia that occurred. The results of the Kruskal-Wallis statistical test showed a significant relationship (p < 0.05). This study shows that there is a relationship between the size of artificial cages and the degree of dysplasia in Wistar rats induced by 40 ppm formaldehyde.
Effect of Formaldeyde Induction of Histopathological Features of The Lungs of Wistar Rats (Rattus Norvegicus) Yassa, I Wayan Radityakara Wirasena; Anak Agung Ayu Niti Wedayani; Restuningdyah, Novia Andansari Putri; Linda Silvana Sari; Eka Arie Yuliyani
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8173

Abstract

Formaldehyde, a known carcinogen prevalent in everyday environments, poses significant health risks, particularly through inhalation exposure. This study investigates the histopathological changes in the lungs of Wistar rats induced by formaldehyde at doses of 20, 30, and 40 parts per million (ppm) over a three-month period. The research aims to elucidate the onset of dysplasia, a cellular defense mechanism characterized by abnormal epithelial proliferation, as a response to carcinogenic exposure. Utilizing a post-test only control group experimental design, we observed that increased formaldehyde exposure correlates with a heightened severity of dysplasia, with a statistically significant result (p = 0.002). Our findings indicate that varying doses of formaldehyde lead to differential degrees of dysplasia, underscoring the importance of dose-response relationships in assessing the carcinogenic effects of formaldehyde on lung tissue.
Differences in the Influence of Driving Behavior on Pollution in Lombok Island Suteja, I Wayan; Hasyim, Hasyim; Rohani, Rohani; Sideman, IAO Suwati; Mahendra, Made; Sanusi, Andi
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8179

Abstract

This study aims to analyze the effect of driving behavior on pollution on the island of Lombok. This study is a study with a Completely Randomized Design (CRD). Data collection was carried out by distributing questionnaires to respondents who met the criteria as respondents. This equation contains positive and negative statements that aim for respondents to read the statements carefully and answer with their own perceptions. The questionnaire in this study uses a Likert scale of 1-5 in measuring respondent perceptions. This study shows that driving behavior on Lombok Island has a significant influence on air pollution levels, especially in urban areas such as Mataram which have high traffic density. This pollution is caused by aggressive driving behavior, such as sudden acceleration and sudden braking, as well as low vehicle maintenance that increases exhaust emissions such as CO, NOx, and PM2.5. The impact not only reduces air quality and damages the ecosystem, but also increases cases of respiratory diseases such as ARI and asthma. Science-based solutions, such as the use of environmentally friendly vehicles, development of public transportation, and energy-efficient driving education, need to be implemented to reduce pollution and maintain environmental sustainability in Lombok.
Diversity of Seagrass in Sire Beach, West Nusa Tenggara Nurbayanti, Elya Sri; Naura, Diah Ayu; Aprilliyanti, Dini Aziza; Ismayani, Ismayani; Adhawati, Laela; Auliya, Lana; Apriliani, Lilik Ayu; Prayoghi, M. Satrio; Arizmayadi, M. Yusran; Chandri, Dining Aidil; Ghazali, Mursal
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2b.8180

Abstract

Seagrass ecosystems are vital for marine biodiversity, carbon storage, and coastal protection but face threats from human activities and environmental changes. This study examines seagrass diversity, distribution, and ecological conditions at Sire Beach, North Lombok Regency, West Nusa Tenggara. Research conducted from October to December 2024 used transect-quadrat and exploratory methods at three stations. In addition to biotic elements like seagrass species, abiotic variables including temperature, pH, salinity, and dissolved oxygen were simultaneously examined. Eight seagrass species were identified: Halodule pinifolia, Cymodocea serrulata, Syringodium isoetifolium, Cymodocea rotundata, Thalassia hemprichii, Halophila ovalis, Enhalus acoroides, and Halodule uninervis. Enhalus acoroides dominated due to its adaptability and robust root systems. Diversity (H’=1.66), dominance (0.499), and evenness (0.798) indices indicate moderate biodiversity and balanced species distribution. Abiotic factors, including temperature (29–30.5°C) and pH (7.14–7.60), were optimal, though nutrient levels (phosphate 0.10–0.15 mg/L, ammonia 0.02–0.03 mg/L) could affect photosynthesis. Sire Beach's seagrass ecosystem is moderately diverse and stable but affected by anthropogenic pressures. Conservation measures and long-term monitoring are recommended to sustain this critical habitat.
Relationship Between Body Mass Index, Duration of Diabetes Mellitus, and Physical Activity Degree with The Incidence of Diabetic Retinopathy in Type 2 Diabetes Mellitus Patients at Praya Hospital Asary, Teguh Mayadi; Effendi, Raden Gunawan; Khairunnisai T.; Adnyana, I Gede Angga
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8187

Abstract

Diabetes Mellitus is a chronic condition that leads to complications and premature death worldwide. Diabetic retinopathy is a posterior segment anomaly and one of the most prevalent microvascular problems.  The purpose of this study is to examine the link between body mass index, diabetes duration, and level of physical activity with the incidence of diabetic retinopathy in Praya Regional Hospital's type 2 diabetes patients. This study employed a case control design and observational quantitative analytical research as its methodology. Purposive sampling is the method employed, and it involves questionnaire completion, interviews, and medical records. The data was analyzed using the Chi Square test, with a significance level of p < 0.05. The study comprised 54 samples in each case and control group, for a total sample size of 108. Body mass index was substantially linked with the development of diabetic retinopathy (p=0.013). Diabetic retinopathy was significantly associated with diabetes duration (p-value = 0.001). The degree of physical activity had no significant association with the development of diabetic retinopathy (p-value = 0.823). At Praya Regional General Hospital, the incidence of diabetic retinopathy in persons with type 2 diabetes mellitus is linked to body mass index and diabetes duration, but not to physical activity level.
Acceleration of Rooting Ability and Root Development of Coffee Seedlings (Coffea canephora L.) through a Combination of Dormancy Breaking Techniques and Coffee Types Yora, Muharama; Ilham, Dewi Jayagma; Rahayu, Sisca Novi Suci; Putri, Zahra Tania
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8197

Abstract

Plant germplasm plays an important role in maintaining genetic diversity and sustainability of plant cultivation, including coffee. Seed viability testing is a crucial step in ensuring seed quality before being used for planting. The role of coffee germplasm development is carried out to store high-potential coffee varieties, including those with good adaptation and resistance properties. In addition to maintaining coffee germplasm, seed viability testing is also important to ensure effective genetic conservation and maintenance of valuable coffee genetic resources. The purpose of this study was to determine the seed viability of several coffee cultivars with several treatments and to determine the viability and vigor of seeds after a long storage period. The experimental design used was a factorial Randomized Block Design (RAK), with two factors. The first factor is the coffee cultivar (K) consisting of 4 levels, namely: K1 = Tuo coffee, K2 = Ciari coffee, K3 = Manak coffee and K4 = Bengkulu coffee. The second factor is the dormancy breaking method (P) which consists of four levels, namely: (1) breaking the dormancy of several coffee seed varieties by giving growth stimulating hormones, namely GA3 300 ppm f (D1), (2) breaking dormancy chemically with H2SO4 with a concentration of 20% (D2), (3) soaking coffee seeds in warm water at a temperature of 60˚C (D3), (4) soaking seeds in plain water (D0). from this study is that by providing the dormancy breaking method with the soaking method with GA3 at a concentration of 300 ppm in increasing the maximum growth potential of coffee seeds, however, giving different types of coffee treatments and combinations of different types of coffee and dormancy breaking have not shown significantly different results.

Page 162 of 252 | Total Record : 2520

 160   161   162   163   164 

Filter by Year

2013 2026


Reset
Filter By Issues
All Issue Vol. 26 No. 1 (2026): Januari-Maret Vol. 25 No. 4 (2025): Oktober-Desember Vol. 25 No. 4b (2025): Special Issue Vol. 25 No. 4a (2025): Special Issue Vol. 25 No. 3 (2025): Juli-September Vol. 25 No. 2 (2025): April-Juni Vol. 25 No. 1 (2025): Januari - Maret Vol. 24 No. 4 (2024): Oktober - Desember Vol. 24 No. 3 (2024): July - September Vol. 24 No. 2 (2024): April - Juni Vol. 24 No. 2b (2024): Special Issue Vol. 24 No. 1 (2024): Januari - Maret Vol. 24 No. 1b (2024): Special Issue Vol. 23 No. 4 (2023): October - December Vol. 23 No. 3 (2023): July - September Vol. 23 No. 2 (2023): Special Issue Vol. 23 No. 2 (2023): April-June Vol. 23 No. 1 (2023): Special Issue Vol. 23 No. 1 (2023): January - March Vol. 22 No. 4 (2022): October - December Vol. 22 No. 3 (2022): July - September Vol. 22 No. 2 (2022): April - June Vol. 22 No. 1 (2022): January - March Vol. 21 No. 3 (2021): September - Desember Vol. 21 No. 2 (2021): Mei - Agustus Vol. 21 No. 1 (2021): Januari - April Vol. 20 No. 3 (2020): September - Desember Vol. 20 No. 2 (2020): Mei - Agustus Vol. 20 No. 1 (2020): Januari - April Vol. 19 No. 2 (2019): Juli - Desember Vol. 19 No. 1 (2019): Januari - Juni Vol. 18 No. 2 (2018): Juli - Desember Vol. 18 No. 1 (2018): Januari - Juni Jurnal Biologi Tropis vol.17 No.2 Desember 2017 Jurnal Biologi Tropis vol.17 No.1 Juni 2017 Jurnal Biologi Tropis. Vol.16 No.2 Desember 2016 Jurnal Biologi Tropis. Vol.16 No. 1 Juni 2016 Jurnal Biologi Tropis. Vol.15 no.2 Desember 2015 Jurnal Biologi Tropis. Vol.15 No. 1 Juni 2015 Jurnal Biologi Tropis. Vol.14 No. 2 Desember 2014 Jurnal Biologi Tropis. Vol.14 No. 1 Juni 2014 Jurnal Biologi Tropis. Vol.13 No. 2 Desember 2013 Jurnal Biologi Tropis. Vol.13 No.1 Juni 2013 More Issue