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Abstrak :
Beberapa obat banyak digunakan sebagai imbuhan pakan untuk ayam, yang dapat menimbulkan residu pada hasil ternak apabila peternak tidak mengikuti dosis aturan clan pemakaian yang tepat. Suatu penelitian yang dilakukan untuk melihat residu clopiol di daging clan hati ayam pedaging yang diberi clopidol setiaphari sebagai imbUhan pakan dengan dosis 5 g/ 10 kg pakan selama 10 han. Analisis dilakukan dengan menggunakan Kromatografi Cain Kinerja Tinggi. Sampel dièkstraksi dengan asetonitril, dihilangkan Iemaknya dengan n-heksana, kernudian dimurnikan dengan kromatografi kolom yang dilsi dengan alumina oksida. Kadar tertinggi 4,2659 ppm dalam daging clan 16,0000 ppm dalarn hati yang terdeteksi pada hari pertama setelah pemberian clopidol dalam pakandihentikan. Kadar clopidol sudah berada di bawah batas rnaksimum pada hari ke-4 setelah pemberian clopidol dihentikan. ...... Numbers of drugs have been used as feed additive for poultry, which causes residues in the products if farmer does not follow the recommended dose and the right application. A study was carried out to see clopidol residue in meat and liver of chicken given clopidol every day as feed additiveat 5 g/ 10 kg feed for 10 days. Analysis was carried out using High Performance Liquid Chromatography (HPLC). Sample was extracted with acetonitrile, fat was washed out with hexane, then it was cleaned up on the colom chromatography filled with alumina oxide. The highest level was 4,2659 ppm in meat and 16,0000 ppm in liver, which was detected at first day after addition clopidol in feed was terminated. Clopidol level was under the maximum limit at day 4 after dosing was stopped.

Abstrak :
Pemakaian antibiotika golongan tetrasiklin dalam bidang peternakan makin banyak digunakan, baik untuk pengobatan teraak maupun sebagai pemacu pertumbuhan, karena golongan tetrasiklin merupakan jenis antibiotika yang mempunyai spektrum keija yang luas, harganya relatif murah, dan mudah didapat. Pemberian antibiotika pada hewan menyebabkan adanya residu pada pangan asal temak seperti daging, telur, dan susu. Bahan pangan tersebut umumnya diolah dengan pemanasan sebelum dikonsumsi, sehingga p^rlu diteliti pengaruh pemanasan terhadap kandungan residu antibiotika tersebut. Tujuan penelitian ini mengetahui pengaruh pemanasan pada suhu air mendidih terhadap kandungan residu antibiotika golongan tetrasiklin (oksitetrasiklin, tetrasiklin, dan klortetrasiklin) dalam telur ayam. Waktu pemanasan pemanasan yang digunakan 1, 5, 10, 15, dan 30 menit setelah air mendidih (+100 °C). Residu golongan tetrasiklin dideteksi menggunakan Kromatografi Cair Kineija Tinggi (KCKT) dengan fase gerak asam oksalat 0,0025 M ; asetonitril (8;2). Hasil yang diperoleh menunjukkan proses pemanasan dapat menurunkan kandungan residu antibiotika golongan tetrasiklin. Persentase residu yang tertinggal setelah pemanasan selama 30 menit pada suhu air mendidih pada kuning telur oksitetrasiklin 8,8%, tetrasiklin 20,9% dan klortetrasiklin 36,5%. Sedangkan residu yang tertinggal pada putih telur oksitetrasiklin 9,2%, tetrasiklin 20%, dan klortetrasiklin 35,7%. ...... The application of antibiotics tetracycline's in the livestock is increasing very rapidly, either as treatments for a diseases or used as growth promotor, since antibiotic tetracycline's had a broad spectrum activity, relatively inexpensive, and available in drug store. Antibiotics to the animal may caused its residue in their products, sucks as meat, eggs, and milk. However, food of animal origin are generally prepared by heating, therefore the effect of heating to the concentration of antibiotics residues should be studied. The aim of this s^udy was to find out the effect of heating chicken's eggs boiling water to the concentration of tetracycline's residue (oxytetracycline, tetracycline, and chlortetracycline ) in it. The length of heating were 1, 5, 10, 15, and 30 minutes after boiling point (about 100 C). The tetracycline's residues was detected using High Performance Liquid Chromatography (HPLC ) with oxalic acid 0,0025 M ; acetonitrile (8 ; 2) as mobile phase. The results indicated that heating reduced the concentration of the tetracycline as residues. The percentages of oxytetracycline's, tetracycline's and chlortetracycline's residue detected in egg yolks after heating the eggs for 30 minutes in boiling water were 8,8%, 20,9% and 36,5% respectively. While the residues detected in white eggs 9,2%, 20% and 35,7% for oxytetracycline, tetracycline and chlortetracycline respectively.

Abstrak :
Metode imunokimia telah lama dikenal sebagai metode analisis yang cepat, sensitif, spesifik serta ekonomis untuk deteksi residu obat pada produk peternakan. Metode ini menggunakan antibodi poliklonal atau monoklonal. Dua tahap penting harus dilakukan untuk pengembangan metode enzyme-linked immunosorbent assay (ELISA) untuk analisis residu oksitetrasiklin pada produk pangan asal hewan; yaitu sintesis hapten OTC untuk dikonjugasikan pada protein dan produksi antibodi. Hapten OTC-tolidin dan OTC-ABA telah disintesis dan dipergunakan sebagai imunogen setelah dikonjugasikan pada BSA. Konjugat OTC-tolidin-BSA yang dihasilkan berwarna merah-ungu dan memiliki dua serapan pada λ 277 nm dan 488 nm, sedangkan konjugat OTC-ABA-BSA berwarna coklat kekuningan memiliki dua serapan pada λ 280 nm dan 437 nm. Hasil analisis KLT dan KCKT menunjukkan bahwa kedua konjugat sudah cukup murni karena tidak mengandung pereaksi yang dipergunakan. Dari hasil analisis elektroforesis gel (SDS-PAGE) dapat diperkirakan BM dari konjugat OTC-tolidin- BSA 69.791 dan OTC-ABA-BSA(71.219 Da) lebih besar dari BM BSA, hal ini menunjukkan sudah terjadi konjugasi antara BSA dan hapten OTC. Untuk produksi antibodi, kelinci diimunisasi dengan konjugat OTC- tolidin-BSA (1:75) dan OTC-ABA-BSA (1:30). Konsentrasi antibodi yang dihasilkan setelah dimurnikan dengan kolom HiTrap Protein A yang spesifik mengikat IgG, masingmasing 17,79 mg/ml dan 12.08 mg/ml.

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Immunoassay has long been known as a rapid, sensitive, spesific and cost effective analytical methods for drug residues detection in food animal products. This method based on polyclonal and monoclonal antibodies. There are two important phases to be done to develop the method of enzyme?linked immunosorbent assay (ELISA) , in order to analyze the oxytetracycline (OTC) residue on food animal products. They are the OTC hapten synthesis which is conjugated on protein, and the antibodies production. These OTC-tolidin and OTC-ABA haptens have been synthesized and used as immunogens after being conjugated to BSA. The OTC-tolidin-BSA conjugate produces purplish-red color and has absorbance of λ 277 nm and 488 nm, while the OTC-ABA-BSA conjugate produces yellowish-brown color and has absorbance of λ 280 nm and 437 nm. The analysis result on TLC and HPLC shows that both conjugates have sufficcient purity since it does not contain any reagents. From the result of SDS PAGE analysis, it can be considered that the MW from OTC-tolidin-BSA (69.791 Da) and OTC-ABA-BSA (71.219 Da) conjugate is higher than MW BSA. This fact shows that the conjugation has successfully occurred. To produce the antibody, the rabbit is being immunized by the OTC-tolidin-BSA (1:75) and OTC-ABA-BSA conjugate (1:30). The antibody concentration after being purified by the HiTrap Protein A colom, which specifically binds the IgG, are 17,79 mg/ml and 12.08 mg/ml.

Abstrak :
Telah dilakukan penelitian pemeriksaan efek antelmintik dari perasan buah mengkudu (Morinda citrifolia Linn) infeksi nematoda pada domba lokal. Pemeriksaan yang terhadap dilakukan meliputi penghitungan telur cacing tiap gram tinja, penimbangan berat badan dan pemeriksaan gambaran darah (henatokrit, sel darah merah, sel darah putih dan hemoglobin). Hasil penelitian menunjukkan bahwa perasan buah mengkudu dengan dosis 1 gr per kg berat badan efektif untuk mengobati infeksi nematoda pada domba.

Abstrak :
Mastitis merupakan penyakityang merugikan peternak sapi perah karena dapat menurunkan produksi susu. Untuk pengobatan mastitis biasanya digunakan antibiotika. Hal mi menyebabkan adanya residu dalam susu. TUJUan penelitian mi adalah untuk mengetahui tenggang waktu residu kloksasilin dalam susu yang berasal dari ambing yang menderita mastitis. Lima ekor sapi Frisian hoistain penderita mastitis diberi 200 mg/kuartir/hari kloksasilin selama 3 hari berturut-turut. Residu dalam susu diamati selama 10 hari dengan alat KCKT. Ekstraksi diawali dengan penambahan asetonitril untuk mengendapkan protein dan lemak, kemudian penyar-ian dengan CH2C1 2 dalam suasana bufer fosfat •pH 2,2. Petroleum eter (30°-60°C) ditambahkan pada ekstrak CH2C12 untuk mempermudah ekstraksi selanjutnya menggunakan bufer fosfat pH 7. Filtrat yang • diperoleh ditambahkan ammonium sulfat Jenuh sebelum disari dengan asetonitril. Pada alat KCKT .digunakan kolom pBondapak t19 RP (300 mm x 3,9 mm. 10 Mm) dengan fase gerak KH2PO4 0,01 M : CH7CN : CHOH (50 :30 : 20) dengan kecepatan aliran 1 mi/menit dan dideteksi pada 220 nm. Hasil analisis menunjukkan bahwa residu kloksasilin tidak terdeteksi lagi pada han ke-8 dihitung sejak hari pengobatan terakhir. ......Mastitis in dairy cow has caused a significant losses to the farmers due to reduced in milk production. Intensive used of antibiotics in the treatment of mastitis have caused antibiotic residue in milk. A study was carried out to determine withdrawal time of cloxacillin in milk produced by mastitis dairy cow. Five Frisian ha1tain suffering from mastitis were treated intramammarily with 200 mg/quarter/day of cloxacillin for 3 successive days. The residue was observed for 10 days using HPLC method. Extraction was performed with the addition of CH 3CN to precipitate proteins and lipids, followed by CH.C1,, in phosphate buffer at pH 22. Petroleum ether (30°-60°C) was added to the CH2C1 2 extract to facilitate further extraction in phosphate buffer at pH 7. Saturated ammonium sulfate was added to the filtrate before extracting with CHCN. HPLC analysis was carried out using /.iBondapak C18 Reversed-Phase column (300 mm x 3.9 mm, 10 m) and KH2PO4 0.01 M : CH3CN : CH3OH (50 : 30 : 20) as mobile phase with a flow rate of 1 ml/minute and detected at 220 nm. The results showed that cloxacillin residue was not detected anymore in milk after 8 days since the last day of treatment.

Abstrak :
ABSTRAK
The existence of chioramphenicol residues in veterinary products could cause such a serious side effect like aplastic anemia. A specific and sensitive ELISA method to detect chioramphenicol residues was needed to be developed in order to get a more efficient and economical analysing method. In this study, a direct ELISA method has been done using chioramphenicol-bovine serum albumin (CAP-BSA) as antigen and antisera chioramphenicol labelled by enzyme horseradish peroxidase (HRP) as antibody. CAP-BSA with a dilution of 1:200 and antisera chioramphenicol labelled by }iRP with a dilution of 1:125 showed a limit detection of 0.05 ng/ml. CAP-BSA had been synthesized from chloramphenicol sodium succinate and BSA, using mixed anhydride reaction, whereas HRP-labelled antisera chloramphenicol had been synthesized from antisera chioramphenicol and FIRP, using periodate conjugation technique. The production of antisera chloramphenicol has been performed through CAP-BSA immunization using two New Zealand White rabbits resulting in antisera chloramphenicol with a less satisfactory specificity and sensitivity. The recovery assay of chloramphemcol in cow milk gave 98,17% ± 2,88% yield.

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