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The Character of Influenza Virus the H7 Subtype and Alert to Novel Influenza Virus H7N9 Subtype Virus Dharmayanti, NLP Indi; S, Bahri
Indonesian Bulletin of Animal and Veterinary Sciences Vol 23, No 3 (2013)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (992.915 KB) | DOI: 10.14334/wartazoa.v23i3.1003

Abstract

Influenza virus subtype H7 influenza viruses as well as other influenza virus geographically divided into two distinct genetic lineages, North American (H7N2, H7N3) or Eurasian (H7N7 and H7N3). Unlike the AI virus subtypes H5, since 1997 until now, all the infections caused by the H5 virus has Neuraminidase subtype 1 but H7 subtype of AI virus that transmitted successfully to humans have variety of Neuraminidase, so it seems compatible with H7 subtype. In poultry, the H7 subtype of AI virus typically causes mild symptoms, although there are also several outbreaks caused by this subtype virus, so it did not cause panic and active surveillance activities to identify this virus. It is very different from the H5N1 virus which caused many deaths and losses in poultry that infected with H5N1 virus so that it can be identified quickly. In April 2013, China reported a new AI virus is novel H7N9 which resulted in several people died. The world became aware of the H7N9 virus spreading to outside from China, it takes vigilance to be able to anticipate the disease, including Indonesia. Analysis of novel H7N9 virus showed that all genes of the virus is of avian origin, and the three other genes of the virus are reassorment from six internal genes of the AI virus A (H9N2) A/brambling/Beijing/16/2012, HA gene derived from A/duck/Zhejiang/12/2011 (H7N3), and NA genes thought to have come from A/wildbird/Korea/A14/2011 (H7N9). Epidemiological studies show that 77% of people infected by H7N9 have direct or indirect contact with animals including poultry when visiting or working in live poultry markets. Novel H7N9 virus was also found in pigeons, chickens, and environmental that have high genetic similarities with the novel H7N9 virus that infects humans. Until now (May 2013), a novel H7N9 virus has not been identified in Indonesia, so as a precaution and because the symptoms caused by the H7N9 virus is not visible (mild symptom) in poultry so that the necessary actions as follows: 1) Active surveillance (market traditionally, backyard chicken including pigeons), 2) Updating method of diagnosis, and 3) The study of human-animal interface, and 4) the study of AI complete virus genome to detect novel influenza viruses, including influenza H7N9 novel virus.   Key words: Subtype H7 of Avian Influenza virus, China, novel H7N9, virus reassortant
The Character of Influenza Virus the H7 Subtype and Alert to Novel Influenza Virus H7N9 Subtype Virus NLP Indi Dharmayanti; Bahri S
WARTAZOA, Indonesian Bulletin of Animal and Veterinary Sciences Vol 23, No 3 (2013): SEPTEMBER 2013
Publisher : Indonesian Center for Animal Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (992.915 KB) | DOI: 10.14334/wartazoa.v23i3.1003

Abstract

Influenza virus subtype H7 influenza viruses as well as other influenza virus geographically divided into two distinct genetic lineages, North American (H7N2, H7N3) or Eurasian (H7N7 and H7N3). Unlike the AI virus subtypes H5, since 1997 until now, all the infections caused by the H5 virus has Neuraminidase subtype 1 but H7 subtype of AI virus that transmitted successfully to humans have variety of Neuraminidase, so it seems compatible with H7 subtype. In poultry, the H7 subtype of AI virus typically causes mild symptoms, although there are also several outbreaks caused by this subtype virus, so it did not cause panic and active surveillance activities to identify this virus. It is very different from the H5N1 virus which caused many deaths and losses in poultry that infected with H5N1 virus so that it can be identified quickly. In April 2013, China reported a new AI virus is novel H7N9 which resulted in several people died. The world became aware of the H7N9 virus spreading to outside from China, it takes vigilance to be able to anticipate the disease, including Indonesia. Analysis of novel H7N9 virus showed that all genes of the virus is of avian origin, and the three other genes of the virus are reassorment from six internal genes of the AI virus A (H9N2) A/brambling/Beijing/16/2012, HA gene derived from A/duck/Zhejiang/12/2011 (H7N3), and NA genes thought to have come from A/wildbird/Korea/A14/2011 (H7N9). Epidemiological studies show that 77% of people infected by H7N9 have direct or indirect contact with animals including poultry when visiting or working in live poultry markets. Novel H7N9 virus was also found in pigeons, chickens, and environmental that have high genetic similarities with the novel H7N9 virus that infects humans. Until now (May 2013), a novel H7N9 virus has not been identified in Indonesia, so as a precaution and because the symptoms caused by the H7N9 virus is not visible (mild symptom) in poultry so that the necessary actions as follows: 1) Active surveillance (market traditionally, backyard chicken including pigeons), 2) Updating method of diagnosis, and 3) The study of human-animal interface, and 4) the study of AI complete virus genome to detect novel influenza viruses, including influenza H7N9 novel virus.   Key words: Subtype H7 of Avian Influenza virus, China, novel H7N9, virus reassortant
PENGARUH DOSIS PUPUK KCL TERHADAP PERTUMBUHAN DAN HASIL BEBERAPA KULTIVAR PADI GOGO LOKAL ACEH TIMUR Raibah, Erza Didah; S, Risyad; S, Bahri
Agrobun Vol 2 No 1 (2025): AGROBUN: Januari-Juni
Publisher : LPPM Universitas Tjut Nyak Dhien

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36490/agrobun.v2i1.1864

Abstract

· Introduction: Efforts are needed to increase rice production through innovative technological breakthroughs. These breakthrough efforts must utilize a more practical approach with balanced intensification between increasing productivity and conserving resources. Therefore, it is necessary to research the optimum dosage of KCl fertilizer for local upland rice in East Aceh· Materials and Methods: This research was conducted at the experimental field of the Faculty of Agriculture, Samudra University, Langsa City, Aceh Province, with an altitude of ± 10 meters above sea level and soil pH of 5.9. The research was arranged using a factorial randomized complete block design (RCBD), consisting of two factors: 5 levels of KCl fertilizer dosage and 5 levels of local upland rice cultivars from Aceh. Parameters observed included plant height, number of tillers, number of productive tillers, days to flowering, days to maturity, yield per plant, and yield per plot.· Results: The results showed that the dosage of KCl fertilizer significantly affected plant height, number of tillers, number of productive tillers, days to flowering, days to maturity, yield per plant, and yield per plot. However, it did not significantly affect plant height and number of tillers. The research also indicated that the local upland rice cultivars from East Aceh significantly affected plant height, number of tillers, and number of productive tillers. The interaction between KCl fertilizer dosage and local upland rice cultivars from East Aceh significantly affected the number of tillers per hill and significantly affected plant height, number of tillers, yield per plant, and yield per plot. However, it did not significantly affect plant height in some growth stages.