PEMANFAATAN TELUR AYAM SEBAGAI PABRIK BIOLOGIS (KAJIAN PUSTAKA)

ABSTRAK Penelitian tentang pemanfaatan telur sebagai pabrik biologis dilakukan sangat komprehensif di beberapa institusi perguruan tinggi di Inonesia, yakni Fakultas Kedokteran Hewan (FKH) Institut Pertanian Bogor (IPB), FKH Universitas Gadjah Mada (UGM), FKH Universitas Udayana (UNUD), FKH Universitas Syahkuala (Unsyiah), Fakultas Kedokteran Gigi Universitas Indonesia. Jejaring penelitian dibangun dengan baik dan telah menghasilkan beberapa produk, antara lain: telur berkhasiat flu burung H5N1, telur Anti Tetanus Serum, Telur Anti Diare, Telur anti Plaque dan Telur Anti White Spot Syndrome Virus pada udang. Secara ilmiah khasiat IgY spesifik dalam kuning telur sebagai senyawa therapeutic telah diuji dan tinggal memerlukan sentuhan akhir tersendiri untuk dapat disajikan sebagai produk komersial. Peran industri yang relevan sangat dibutuhkan dalam mewujudkan hal ini. THE USE OF EGG AS A BIOLOGICAL PRODUCER FOR SPESIFIC ANTIBODIES ABSTRACTS The use of egg as a biological producer for specific antibodies were done intensively among well known universities in Indonesia, such as Faculty of Veterinary Medicine (FVM) of FVM of IPB, FVM of UGM, FVM of UDAYANA and FVM of UNSYIAH as well as Faculty of Dental Medicine Indonesia University. The collaboration and research networking among those institutions run as expected and succeed to produce some important products such as eggs containing IgY anti avian flu as well as anti tetanus, anti diarrhea, anti plaques and eggs anti WSSV in shrimp. The potency of specific IgY as immunotherapeutic substances had been studied and need the commercial touch from the respective industries until this products in market available

Resistance of Ampicillin, Ceftazidime, and Cefotaxime in Poultry’s Escherichia coli

Beta-lactam antibiotics are important antibiotics that are widely used in the field of human and animal health. Ampicillin resistance has been widely reported. Another increase in resistance is 3rd generation cephalosporins. The purpose of this study was to compare the ampicillin resistance profiles in 2019 and 2021 in the same E. coli isolates and to determine the resistance profiles of ampicillin, ceftazidime, and cefotaxime in live chicken E. coli. The research stages were the preparation of isolates; culture on differential selective media and checking the uniformity of bacterial cell morphology; biochemical test; bacterial DNA extraction; uspA gene amplification; visualization of amplification results; manufacture of bacterial suspensions; Kirby-Bauer disk diffusion resistance test; measurement of inhibition zones and determination of isolate status; and compared the ampicillin resistance test data. All isolates were confirmed positive for E. coli. The uspA gene (884 bp) was detected in all isolates. Ampicillin resistance in 2019 and 2021 in the same E. coli isolates when compared, there was no difference. Resistance test showed E. coli was resistant to ampicillin (100%), ceftazidime (15.4%), and cefotaxime (64.5%). The conclusion of the study was that there was no difference between the ampicillin resistance in 2019 and 2021 in E. coli isolates. Escherichia coli in this study had the highest resistance profile to ampicillin, followed by cefotaxime, and the lowest was ceftazidime

Phytochemical Profiles of Propolis Trigona Spp. from Three Regions in Indonesia Using GC-MS

This research was designed to determine the phytochemical components of the ethanol extract of propolis Trigona spp. using GC-MS. GC-MS analysis showed the presence of twelve different compounds in ethanol extract of propolis Trigona spp. from South Sulawesi region. The main phytochemical compounds identified in propolis from South Sulawesi were octadecane (11.87%) and from twelve compounds identified only six compounds were reported to have biological activity. The ethanol extract of propolis Trigona spp. from South Kalimantan region indicated the presence of eight different bioactive compounds with highest peak area of 0.96% for tricosane, from eight compounds identified only three compounds were reported to have biological activity. The ethanol extract of propolis Trigona spp. from Banten region showed the presence of eight different bioactive compounds with highest peak area of 4.80% for nonacosane and from the eight compounds identified only five compounds were reported to have biological activity. This research confirmed that the existence of different bioactive compounds from each region of origin of propolis in Indonesia. Keywords: propolis Trigona spp., ethanol extract, phytochemical profile, GC-MS analysi

Amantadine resistance of clade 2.3.2 H5N1 Avian Influenza Virus from Waterfowl in Indonesia

The objective of this research was to know the sensitivity of H5N1 clade 2.3.2 AIV from Indonesia to antiviral drug (amantadine) through molecular and in vitro tests. The study was conducted by virus isolation and identification, nucleotide analysis, and susceptibility to the amantadine hydrocloride in MDCK cells. The study result represented that the mean EID50 isolates of H5N1 clade 2.3.2 AIV was determined of 108 EID50/ml. The analysis of phylogenetic tree of M2 gene from six viruses of H5N1 clade 2.3.2 AIV from Indonesia were closed with H5N1 clade 2.3.2 AIV avian influenza viruses from Vietnam, China, Hongkong. The substitution of M2 protein (V27I) was identified in six isolates H5N1 clade 2.3.2 AIV isolated from Indonesia. Avian influenza of clade 2.3.2 H5N1 subtype from Indonesia produced the formation of CPE and the positive HA reaction with non-toxic concentration of amantadine hydrochloride in MDCK cells. The result of genetic analysis of M2 gene for amantadine resistance was related with the results of HA test and the formation of CPE in MDCK cells. These results established that amantadine resistance have been identified in H5N1 clade 2.3.2 AIV viruses isolated from Indonesi

Phenotypic and Genotypic Study of Antibiotics Resistance Profile in Escherichia coli Isolated from Broilers in Cianjur, Indonesia

This study aimed to investigate the phenotypic and genotypic of antibiotics resistance profile in Escherichia coli. The 30 samples come from cloacal swab of broilers in Cianjur, Indonesia. Isolation and identification of E. coli was performed by culture in McConkey agar, eosin methylene blue agar, Gram staining and five essential biochemical tests (IMViC). In this study, 10 isolates (33.3%) were confirmed E. coli positive. Phenotypic profile was performed by screening all isolates with 8 antibiotics of 6 antibiotic groups. The screening was carried by Kirby-Bauer disk diffusion method based on the standard of CLSI. For genotypic profile, each resistant isolate was detected antibiotic resistance-encoding gene. The result showed all isolates (100%) resistant against tetracyclin, oxytetracycline and erythromycin. Nine isolates (90%) detected nalidixic acid and enrofloxacin-resistant. The ciprofloxacin and gentamicin-resistant isolates were 70% and 40%, respectively. There was no resistant isolate for chloramphenicol. Multi drug-resistant was detected on 90% isolates. Only gyrA (100%) and tetA (80%) genes were detected. This study showed high rate of occurrence of antibiotic resistance in E. coli. Not all resistant isolates were detected in the antibiotic resistance-encoding gene in this study. Future research to detect resistance genes should use more varied target genes

Waktu Henti Antibiotik dan Faktor yang mempengaruhinya pada Peternakan Broiler di Bogor

Waktu henti antibiotik merupakan salah satu faktor yang berpengaruh terhadap residu antibiotik. Residu obat dalam unggas dan produk unggas menjadi perhatian karena membahayakan kesehatan masyarakat seperti berupa reaksi alergi dan hipersensitivitas, gangguan reproduksi, karsinogenisitas, nefropati, gangguan flora normal usus dan resistansi antibiotik. Peternak broiler yang memperhatikan waktu henti antibiotik baru sekitar separuhnya. Penelitian ini bertujuan untuk menganalisis faktor yang mempengaruhi waktu henti antibiotik pada broiler. Desain penelitian yang digunakan adalah cross sectional study. Sampel penelitian diambil sebanyak 103 Rumah Tangga Peternak (RTP) dengan kriteria sampel adalah peternak yang menggunakan antibiotik dalam proses pemeliharaan broilernya. Data diambil menggunakan kuesioner dengan cara wawancara. Analisis data dilakukan menggunakan uji korelasi dan uji t dengan taraf signifikan (α) sebesar 5 %. Hasil penelitian menemukan faktor yang berkorelasi secara signifikan terhadap waktu henti antibiotik adalah umur peternak dengan kekuatan korelasi lemah dan cukup, Lama bekerja dengan kekuatan korelasi yang cukup, dan jumlah kepemilikan broiler dengan kekuatan korelasi yang cukup. Waktu henti antibiotik secara rerata berbeda nyata berdasarkan pada faktor pengambil keputusan dan penggunaan kombinasi antibiotik. Pengambil keputusan yang dilakukan oleh peternak dan yang tidak menggunakan kombinasi antibiotik waktu henti antibiotiknya lebih panjang

CHARACTERIZATION OF SPORE-FORMING BACTERIA ISOLATED FROM TILAPIA (OREOCHROMIS NILOTICUS) AND THEIR POTENTIAL FOR A PROBIOTIC CANDIDATE

Gram-positive spore bacteria are widely used as probiotics in general sectors. However, there are still limited bacterial isolates as probiotic candidates available from indigenous isolates, especially in aquaculture. This study aimed to obtain potential spore-forming isolates as probiotic candidate for tilapia. Tilapia fish samples were collected from Sukabumi, Ciamis, Serang, and Papua. Bacterial isolates were isolated from the digestive tract of tilapia. Bacteria were identified based on their morphological, molecular characteristics, complete genome composition, and cell surface identification based on hydrophobic properties. In this study, six bacteria were isolated and identified by molecular characteristics using 16S rRNA sequences. Based on the phylogenetic analysis, the 9 PP isolate was Priestia megaterium basonym: Bacillus megaterium, CMS 16N isolate was Brevibacillus halotolerans, PPN 10 isolate was Bacillus sp., 3.1 SKBM isolate was Bacillus mycoides, CMS 22 N and SRG32 isolate were Bacillus subtilis. Six bacteria had different phenotypicals, ATGC sequence compositions, and a higher proportion of total G~C sequence composition above 50%. The coherent cell surface hydrophobicity test was positive on the SAT, SA, AA, and compact growth patterns in soft-agar media for 9 PP, CMS 22 N, and SRG32 isolates. From our study, the indigenous spore-forming bacteria isolated from tilapia stomachs are enzymatic bacteria, which have a strong attachment to host tissue and high potential as a probiotic candidate for fish. Various hydrophobicity test results from each isolate indicate that the protein composition in the cell surface is different

In Vitro Antibacterial Activity of Black Soldier Fly (Hermetia Illucens) Larva Extracts Against Gram-Negative Bacteria

The aim of this study was to evaluate the in vitro antibacterial activity of Black soldier fly (BSF) larva extract. The BSF larva was extracted using methanol and then tested for antibacterial activity using agar diffusion method (zone growth inhibition). The antibacterial activity was conducted against Salmonella sp. and Escherichia coli, two important bacterial strains in poultry, using six dilution levels (10 mg/ml, 20 mg/ml, 40 mg/ml, 80 mg/ml, 160 mg/ml and 320 mg/ml). All the results were subjected analyze using t-test method. Based on the diameter of the inhibition zone, the BSF larva extract has a strong (P<0.05) antibacterial activity against Salmonella sp. and E. coli when the concentration used 320 mg/ml. In addition, BSF larva extract also contain high amount of lauric acid (49.18%), a saturated fatty acid that has been proven to proposes as antibacterial agent. Therefore, it could be concluded that the BSF larva extract could be used as a candidate for antibacterial substances.

MULTIDRUG-RESISTANT Salmonella sp. ISOLATED FROM SEVERAL CHICKEN FARMS IN WEST JAVA, INDONESIA

This study was aimed at isolating and identifying Salmonella sp. and then conducting an antibiotics susceptibility test in order to detect resistant genes.  One hundred and five chicken cloaca swab samples were used in this study. 30 samples were taken from a layer farm in Bogor, 45 from a broiler farm in Sukabumi and 30 from a broiler farm in Cianjur. In order to  isolate and identify the bacteria, a tetrathionate broth was used, which was then cultured in a Salmonella-Shigella agar, and finally a Gram stain and biochemical test was conducted. To confirm the presence of Salmonella sp., a pair of primers were used for the polymerase chain reaction (PCR) method to determine the presence of the invA gene.. An antibiotics susceptibility test was used with the Kirby-Bauer disk diffusion method. Nine antibiotics were used in this study. Each primer pair was used for the detection of tetA, blaTEM, aac(3)-IV, gyrA and ermB genes, and for genes encoding antibiotic resistance  a PCR test was used. Eight (7.6%) Salmonella sp. were  isolated in this study. All isolates showed positive results with PCR confirmation. The results of the antibiotics susceptibility test showed that Salmonella sp. isolates were resistant to tetracycline (75%), oxytetracycline (75%), amphicillin (75%), gentamycin (12.5%), nalidixic acid (100%), ciprofloxacin (12.5%), enrofloxacin (0%), erythromycin (100%), and chloramphenicol (0%). The distribution of antibiotic resistance genes in Salmonella sp. were tetA (33.3%), blaTEM (100%), aac(3)-IV (0%), gyrA (100%) and ermB (0%) positive. In conclusion, Salmonella sp. was isolated. All isolates showed positive results in the PCR confirmation. Salmonella sp. isolates were resistant to tetracycline, oxytetracycline, amphicillin, gentamycin, nalidixic acid, ciprofloxacin, and erythromycin. Only the tetA, blaTEM, and gyrA genes were detected in Salmonella sp. isolates