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Pengaruh Paparan Hipoksia terhadap Aktivitas Antioksidan Katalase dan Kadar Malondialdehid (MDA) pada Jaringan Hati Tikus
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content in the tissue. Hypoxia can make the formation of free radicals or reactive oxygen species (ROS) which reactive to cell membrane. Body will avoid free radicals by producing antioxidant, such as catalase enzyme. The reaction between ROS and cell membrane will form malondialdehyde (MDA). Liver is the main location of catalase. This research was aimed to know the influence of hypoxia exposure toward catalase antioxidant activity and MDA content in the rat liver tissue. This research used experiment method with fully randomized design. Based on one way Anova test (p≤0.01), it was shown that there had no average difference on catalase activity and MDA content toward length hypoxia exposure. The conclusion of this research was no influence of hypoxia exposure toward catalase activity and MDA content in rat liver tissue.
Key words: catalase antioxidant activity, hypoxia, malondialdehyde (MDA) content,rat liver tissu
Uji Efektivitas Vaksin Flu Burung Subtipe H5N1 pada Ayam Kampung di Legok, Tangerang, Banten
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The aim of the study was to determine the effectiveness of Avian Flu Vaccine Subtype H5N1 on native chicken. There were several inclusion criteria to selected the chicks. The criteria were just native chicken in Legok, at least 8 weeks old and never been had previous vaccine program. Total of 20 chickens were used as samples. All chicken was split in two cages, cage A contained 10 chickens were treated with vaccine and cage B contained 10 chickens as a control. Then 0.5 mL of vaccine administered intramuscularly in the chicken breast. The effectiveness of vaccination determined by measuring antibody titers before and 3 weeks after vaccination program. Measurement of antibody titers obtained by HI (Hemagglutination Inhibition) test method. Result showed that antibody titers of native chicken increased after vaccination program. There were 70% of samples that have been vaccinated could be protected against the virus. Three chickens as a control had positive titers prior to vaccination with a range of 21 - 22.
Key Word : test of effectiveness, homologue killed vaccine, antibody titers
Jenis-Jenis Reptilia di PPKA Bodogol, Taman Nasional Gunung Gede Pangrango
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Ecological studies of reptiles in Java were rarely executed during the last decade, because many scientist have focused exclusively on taxonomical studies. Also, studies about diversity of reptiles which have been heretofore published mostly incorporated with amphibians, and nearly all of those studies concerning in unravel the diversity of amphibians. In Bodogol, Gede- Pangrango National Park, survey about reptiles diversity have been done frequently, but just few researches that have been published and most of all were short term research studies. Hence, a research that concern in studying diversity of reptiles become valuable to carry out. Herein, we studied the diversity of reptiles in Bodogol during November 2011 to March 2012. Reptiles’ species were collected by searching in available trail other than Tangkil, Cipanyairan I, and Cipanyairan II. Total of twenty three species of reptiles were found, encompassing six families (Colubridae, Elapidae, Viperidae, Scincidae, Agamidae, and Gekkonidae). Number species of reptiles occured in Bodogol were quite similar to other largest nature reserve areas within the same geographic range (e.g. Halimun-Salak and Ujung Kulon National Park). Despite its small in size, Bodogol contains various types of habitat which therefore could support a variety species of reptiles.
Key words : bodogol, diversity, reptiles, jav
Kelimpahan Kodok Jam Pasir Leptophryne borbonica di Sepanjang Aliran Sungai Cisuren, Bodogol, Taman Nasional Gunung Gede Pangrango: Abundance of Hourglass Toad Leptophryne borbonica along Stream Gradient
Get PDFThere is high spatial variation in physical and chemical characteristics both within and between streams, some of which has been linked to natural factors. Stream characteristics affect many biological and physical processes. Leptophryne borbonica is stream-dependent toad that spend their life completely in or around stream. The purpose of this study was to determine the effect of habitat characteristics on abundance of Leptophryne borbonica in Bodogol, Sukabumi, West Java. Survey was conducted to obtain data on 27 until 29 June 2013 along Cisuren stream of Bodogol. Parameters that used in this study were conductivity, temperature, humidity, and salinity. The findings showed that all physical factors of stream have weak correlation with the abundance of Leptophryne borbonica. Abiotic factors that forming an ecosystem could affect the abundance and distribution of a amphibians species, because amphibians are sensitive to environmental change. Our result suggested that chemical characteristics along this stream were within the range of fundamental niche of Leptophryne borbonica. However, the slightly different in the number of individuals obtained among plots indicated that there were other factors that may be at play