Judul: Faktor Risiko Terkait Manajemen Kesehatan Unggas Terhadap Infeksi Virus Avian Influenza Di Tempat Penampungan Ayam
Abstrak: The aim of the study was to determine the association between the implementation of poultry health management with spreading of avian influenza virus (AIV) in Poultry Collecting Facilities (PCFs) in Jakarta. The study was performed using secondary data of the AIV surveilance collaboration of Center for Indonesian Veterinary Analitical Studies (CIVAS) and Indonesian Dutch Partnership (IDP) at 2007 by maintained the sentinel chickens (7-8 birds) in 39 PCFs for three months. The variables which related to poultry health management were health certificate, health inspection, health inspector, health inspection method, and handling of sick and dead birds. It was collected by interview with supervisor of PCFs. The AIV infection were taken from the cloacal and tracheal swab of the dead birds with rt-PCR. The results showed that the variable of handling of sick birds were significantly associated with infection of AIV (RR=2,00 ; 95% CI = 1,31-3,05). The other variables did not show significance association. The risk of AIV infection for kept the sick birds alive, or separated, or treated them in the same cage are twice greater than slaughtered them. Poultry health management in PCFs need to be improved as an effort to prevent and control the spreading of AIV in Indonesia.
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Judul: Kajian Persistensi dan Penularan Virus Avian Influenza di Peternakan Itik menggunakan Teknik Real Time RT-PCR
Abstrak: Highly pathogenic avian influenza (HPAI) H5N1 virus has been a major threat to poultry industry and human health in Indonesia over the past several years. The existence of backyard and free-range duck raising system has been hypothesized to play role in the disease circulation. This study investigated H5 virus infection and circulation occurring in three types of free-range duck farms in Indramayu District, West Java, Indonesia from September 2009 to March 2010. One hundred and eighty pairs of cloacal-oropharyngeal swab samples from sentinel ducks placed in six farms of the three farm types were collected every month for seven months period and screened in pools for influenza A virus. In addition to the sentinel ducks, 30 non-sentinel ducks were included at the first and the last sampling month. Of the total 648 pool samples collected for seven months, 91 pools (14%) were found influenza A positive at repeated events. The virus was more commonly found on type 1 farms followed by type 2 and 3 farms. The individual swab samples of influenza A positive pools were tested for H5 subtype. Of the total 91 pools of influenza A positive samples, 455 individual samples were tested for H5 subtype and 50 (11%) individual samples were found H5 positive. The H5 subtype was found at certain points of sampling time and was more commonly found in type 2 farms followed by type 1 and was not found on type 3 farms. The H5 virus was likely to be transmitted within duck farm but was unlikely to be maintained for a long time.
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Judul: Struktur Kristal dan Sifat Optik Lapisan Tipis Ba0.55Sr0.45TiO3 didadah Litium Oksida dengan Metode Chemical Solution Deposition
Abstrak: Telah dilakukan penumbuhan film tipis Barium Strontium Titanat (Ba0.55Sr0.45TiO3) murni dan BST yang didadah Litium Oksida Li2O (BSLT) dengan variasi pendadah 0%, 1%, 3% dan 5% di atas substrat Si(111) tipe-p dengan menggunakan metode Chemical Solution Deposition (CSD) dengan teknik spin coating pada kecepatan putar 3000 rpm selama 30 detik. Film Tipis BST dibuat dengan konsentrasi 1M dan annealing pada suhu 850°C untuk substrat Si(111). Hasil karakterisasi menggunakan XRD diuraikan dalam bentuk grafik hubungan antara intensitas terhadap sudut 2 theta. Pola difraksi XRD Ba0.55Sr0.45TiO3 diketahui memiliki beberapa puncak. Material Ba0.55Sr0.45TiO3 berbentuk kristalin dengan struktur kubus, dengan besar parameter kisi 4.061 Å. Hasil uji sifat optik menunjukkan bahwa pendadahan mempengaruhi nilai energy gap BST dan semakin besar komposisi litium (Li) yang digunakan maka semakin besar indeks bias yang dihasilkan. Pendadahan Li2O menaikkan konstanta dielektrik film.
Keyword: BST, Li2O, energy gap, sifat optik, struktur kristal