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Irwan Effendi
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INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : https://doi.org/10.31258/jnat
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry
Jurnal Natur Indonesia published since 1998, is a science journal that presents articles on research results, thoughts and views from researchers and experts in the field of biosciences (basic science), including biology, physics, chemistry and mathematics. In the field of biosciences (basic science); Biology, Physics, Chemistry, Mathematics.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 20 No. 1 (2022): April" : 5 Documents clear
The Productivity Improvement and Population Growth of Payakumbuh Duck (Anas platyrhynchos domestication) Using a Simple Aspirator Tool on Artificial Insemination (AI) Technology Tertia Delia Nova; Suhartati Suhartati; Azhar Azhar
Jurnal Natur Indonesia Vol. 20 No. 1 (2022): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This study aimed to determine the effect of IB frequency using different simple aspirator on fertility, weight loss and hatchability of Payakumbuh duck (Anas platyrhynchos domestication) eggs. This study used 8 male and 20 female ducks, 90% egg production. In this study, all hatched the hatched eggs. This study used an experimental method with a completely randomized design (CRD) with 4 treatments and 5 replications. The treatments consisted of: P1 is 1 x 2 days, P2 is 1 x 4 days, P3 is 1 x 6 days, P4 is 1 x 8 days; the parameters observed were fertility, weight loss and hatchability. The results of the analysis of variance showed that different AI frequencies had a significant effect (P < 0.05) on the fertility of hatching eggs, but had no significant effect (P > 0.05) on weight loss and hatchability. It can be concluded that P2 had a significant effect (P < 0.05) on fertility because fertile eggs were higher than other treatments. The characteristics of Payakumbuh ducks (Anas platyrhynchos domestication) spermatozoa are milky white and yellowish white, thick and watery consistency, specific odor, volume 0.24±0.05 ml, pH 7.37±0.51, mass movement +, ++ and +++, live percentage 79.06±3.68%, concentration 2.342 billion cells/ml, motility 75.00±7.56% and abnormality 12.06±0.82%. The results of the analysis of variance showed that different AI frequencies had a significant effect (P < 0.05) on the fertility of hatching eggs, but had no significant effect (P > 0.05) on weight loss and hatchability. The frequency of IB 1 x 4 days had the highest fertility rate, namely 67.72 ± 7.99%. A simple Aspirator can function properly with the need for repairs and upgrades in several parts of the tool such as current source, and fan capacity.
Bird Species Based on Tree Height Perched in the Liwa Botanical Garden, West Lampung Regency Bagus Susilo Putra; M Kanedi; Nuning Nurcahyani; G. Nugroho Susanto
Jurnal Natur Indonesia Vol. 20 No. 1 (2022): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Birds are one of the most diverse animals in the world, especially in Indonesia. Liwa Botanical Garden located in Pekon Kubu Perahu, Balik Bukit District, West Lampung Regency, is a conservation area with the theme of conservation and development of ornamental plants, representing the flora of Southern Sumatra. This research is a continuation of the collaboration between the Department of Biology and Balitbang UPTD Liwa Botanical Garden, West Lampung Regency. The presence of birds in the Liwa Botanical Garden is also a bioindicator of biodiversity for the environment in this area. By maintaining the presence of birds in the Liwa Botanical Garden means protecting their habitat and existing plants. The purpose of this study was to determine the species of birds based on the height of the perched trees in the Liwa Botanical Garden and the abundance of their species. The method used in this research is the point count with the observation time for 9 days in the morning and evening at the height of the tree in 3 different observation stations. Birds on KRL are mostly found on perches at an altitude of 2 - 7 meters, in the category of shrubs and trees, there are 19 out of 25 bird species found. The highest Relative Abundance Index (IKR) was Collocalia esculenta at 39.91% and the lowest IKR value was 7 bird species, each with 0.14% value. The conservation status of the 25 bird species based on IUCN is Least Concern (LC) and based on CITES there is one species that is included in Appendix II, namely Ictinaetus malayensis while based on the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia No. P.20 / MENLHK / SETJEN / KUM.1 / 6/2018 there is one bird species that is included in the protection, namely species Ictinaetus malayensis.
The Effect of Tofu Dregs Compost and NPK Fertilizer the Growth and Production of Purple Eggplan (Solanum melongena L.) Arnis En Yulia; M Amrul Khoiri; Sri Yoseva; Nuraida Nuraida
Jurnal Natur Indonesia Vol. 20 No. 1 (2022): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The research was aimed to see the effect interaction of giving tofu dregs compost and npk fertilizer to get the right dose towards growth and the highest production of purple eggplant. The research was conducted at Experimental Garden, Faculty of Agriculture, Riau University, Pekanbaru. The research was conducted for 5 months, from february to june 2020. The reasearch was conducted experimentally in 2 factors. The first factor was the of tofu waste compost consists of 3 levels (0, 10 and 20 ton.ha-1). The second factor was the of NPK fertilizer (0, 100 and 150 kg.ha-1) which consist of nine treatments combination. The observed parameterswere the height of the plant (cm), the days of flowering (days), the days of harvesting (days), the fruit length (cm), the fruit diameter (cm), the number of fruits per plant (fruit), the fruit weight per fruit (g), the fruit weight per plant (g) and the fruit weight with plot (g). The data in this research was analyzed in using variance and followed by Duncan's multiple distance test at 5% level. The results showed that tofu waste compost and NPK fertilizer increased the growth of eggplant such as the height of the plant, the days of flowering, the days of harvesting, the number of fruits per plant, the fruit length, the fruit weight per fruit, the fruit weight per plant and the fruit weight with plot and does not increase fruit diameter. The giving tofu waste compost at a dose 20 ton.ha-1 and NPK fertilizer 150 kg.ha-1 gave the best eggplant growth and production until the plants were 90 DAP
Types of Invasive Plants and Threats to Animal Conservation in National Park Bagus Susilo Putra
Jurnal Natur Indonesia Vol. 20 No. 1 (2022): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Invasive plants are plants that can interfere with other plant life because invasive plants use competition and harm the host they live on. Animal conservation is currently the focus of research so that biodiversity is always maintained in the National Park such as mantangan (Merremia peltata (L.) Merr.) Chromolaena odorata (L), Stachtarpheta jamaicensis. Based on the way of life and rapid reproduction of this invasive plant, it disturbs the habitus of other plants in developing so that it can damage the food chain in the National Park. Conservation of animals in National Park must be in line with the conservation of the surrounding ecology so that the natural ecosystems in the National Parks and biodiversity are fully preserved
Inhibition Test of Hot Water Extract of Rhizophora apiculata Leaves Against Edwardsiella tarda Bacteria in-Vitro Ronal Kurniawan; Sri Wahyuni; Fitrian Armando
Jurnal Natur Indonesia Vol. 20 No. 1 (2022): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

One of the plants that have the potential as antibacterial ingredients is Rhizophora apiculata leaf because it contains secondary metabolites, such as tannins, saponins, flavonoids, steroids, and terpenoids. This study aims to find out the inhibition of hot water extract of R. apiculata leaves in inhibiting the growth of Edwardsiella tarda. The research method used is an experimental method which includes sample preparation, extraction, antibacterial activity test using the Kirby-Bauer disc method and applying a Completely Randomized Design (CRD). The doses used were 100% (10000 ppm), 90% (9000 ppm), 80% (8000 ppm), 70% (7000 ppm), 60% (6000 ppm), 50% (5000 ppm), 40% (4000 ppm), 30% (3000 ppm), 20% (2000 ppm), 10% (1000 ppm) and control (Oxytetracycline). The results showed that the hot water extract of R. apiculata leaves at a dose of 1000-10000 ppm gave various inhibitory diameters ranging from 6.25-10.08 mm and the clear zone formed was classified as medium

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