Abstract. The present study investigated the supplementation of soursop leaves powder (Annona muricata L.) on body weight gain and carcass percentage of male Tegal duck. The study was conducted from 29 November 2015 to 3 January 2016 in duck cage in Sokaraja Kulon, Purwokerto. One hundred male Tegal duck were fed basal feed consisted of 30% corn, 7% soy bean meal, 6.1% vegetable oil, 17% poultry meat meal, 38.2% ricebran, 0.1% L-lysin HCL, 0.3% DL-methionin, 0.2% topmix, 0.1% NaCl, and 1% CaCO3. The experimental research used completely randomized design involving basal feed plus 0, 5, 10, and 15% supplemental soursop leaves meal, each with 5 replicates. The diameter of muscle fiber, lipid cell, body weight gain and carcass percentage were measured. The obtained data were subject to analysis of variance followed by orthogonal polynomial test. Result showed that treatments non significantly (P>0.05) affected the diameter of chest muscle fiber, carcass percentage and carcass but significantly affected (P<0.05) body weight gain with equation Y = 427.74 -67.10 X + 2.27 X 2 . Conclusively, supplemental soursop leaves meal (Annona muricata L.) in feed cannot increase the muscle fiber diameter of intermuscular lipid cell, carcass percentage and carcass components. Excessive supplement even lowers body weight gain of male Tegal duck. Key words: soursop leaves, flavonoid, carcass, muscle fiber, male Tegal duck Abstrak. Penelitian ini bertujuan untuk mengetahui pengaruh suplementasi tepung daun sirsak (Annona muricata L.) dalam pakan terhadap pertambahan bobot badan dan persentase karkas pada itik Tegal jantan. Penelitian telah dilaksanakan pada 29 November 2015 -3 Januari 2016 di kandang itik Sokaraja Kulon, Purwokerto. Materi penelitian menggunakan 100 ekor itik tegal jantan, pakan basal yang diberikan terdiri atas jagung 30%, tepung kedelai 7%, minyak sayur 6,1%, tepung daging 17%, dedak 38,2%, L-lysin HCL 0,1%, DLmethionin 0,3%, topmix 0,2%, NaCl 0,1%, dan CaCO3 1%. Metode penelian yang digunakan metode eksperimen dengan rancangan Rancangan Acak Lengkap. Perlakuan terdiri atas : pakan basal ditambah 0% tepung daun sirsak, pakan basal ditambah 5% tepung daun sirsak, pakan basal ditambah 10% tepung daun sirsak, pakan basal ditambah 15% tepung daun sirsak. Tiap perlakuan diulang 5 kali dan variabel yang diamati adalah diameter otot, sel lemak, pertambahan bobot badan dan carcass percentage. Data yang diperoleh dianalisis menggunakan analisis ragam dan dilanjutkan dengan uji orthogonal polinomial. Hasil analisis ragam menunjukkan bahwa perlakuan berpengaruh tidak nyata (P>0,05) terhadap diameter of breast muscle fiber, tebal sel lemak, carcass percentage dan bagian-bagian karkas, akan tetapi berpengaruh nyata (P<0,05) terhadap pertambahan bobot badan dengan persamaan garis Y = 427,74 -67,10X + 2,27X 2 . Kesimpulan penelitian ini adalah penambahan tepung daun sirsak (Annona muricata L.) dalam pakan belum mampu meningkatkan diameter otot, sel lemak intramuskuler dan persentase karkas dan bagian-bagiannya, bahkan jika pember...

Dilatarbelakangi kondisi petani  di pedesaan yang pendapatannya rendah dan  umumnya petani mempunyai usaha sampingan yaitu beternak. Beternak yang erat kaitannya dengan kehidupan petani adalah beternak itik. Di desa Pegalongan kecamatan Patikraja terdapat Kelompok tani ternak itik (KTTI) yang masih aktif,  yaitu KTTI “Unggas Jaya”.  Permasalahan yang dihadapi oleh kelompok mitra adalah pengadaan bibit, harga pakan, performan itik, harga jual telur dan itik afkir rendah,  Solusinya menggunakan daun sukun fermentasi yang berpotensi sebagai bahan pakan itik berkualitas, karena murah, mudah didapat, mengandung vitamin E,C dan A, mineral, antioksidan dan senyawa aktif  lain yang bermanfaat bagi kesehatan tubuh ternak itik. Antioksidannya dapat meningkatkan performan, kesehatan, kualitas produk sehingga aman dan berkualitas. Metode untuk memecahkan masalah di kelompok mitra melalui alih tehnologi, praktek (IB, penetasan, fermentasi, pengolahan dan pengemasan produk), evaluasi, pendampingan dan pengkaderan. Target luaran adalah produk, artikel ilmiah popular. Hasil dari demo yang sudah dilakukan adalah : pertumbuhan itik lebih baik daripada sebelumnya, itik lebih sehat-sehat, petani sudah mampu melakukan IB,  fertilitas telur hasil IB tinggi yaitu pemeliharaan pejantan lebih dihemat dan peternak dapat menetaskan telur menggunakan mesin tetas.Kata kunci: karkas itik; keamanan pangan; antioksidan; daun sukun, fermentasiAbstractThe background is the low income of farmers in rural areas and side business of farmers is raising livestock. Duck raising was closed with farmer lifes. There are active duck farmer groups (KTTI), namely the "Unggas Jaya" in Pegalongan village, Patikraja sub-district. The problems in farmer group are procurement of day old duck, feed prices, duck performance, low selling prices of eggs and culled ducks. Solution of the problem is using fermented of breadfruit leaf which have the potential as quality duck feed ingredients, because they are cheap, easily obtained, contain vitamins E, C and A , minerals, antioxidants and other active compounds that are beneficial to ducks health. Antioxidants are safe because the performance and ducks health can be improved. Problem solving method in “Unggas Jaya” farmer groups use by technology transfer, practice (Artificial Incemination, operation of hatching machine, fermentation, product processing and packaging), evaluation, mentoring and cadre of participant. Output targets are products and publication of articles in journal. The results of the demonstrations that have been carried out are: duck growth is better than before. The duck is healthier, farmers are able to do IB, high IB fertility eggs are more conserved and farmers can hatch eggs using hatching machine.

Air polution is one of the side effect of broiler production. Broiler chickens produce excreta that contains high ammonia which is derived from the high intake of protein feed. The purpose of this study was to investigate the effect of adsorbent made of rice husk with different levels of activators on ammonia in the cage of broiler chickens, the temperature heat index (THI), and litter pH. The materials used were 180 broiler chickens kept in an open cage. The research was carried out utilizing a Completely Randomized Design, utilizing treatments of rice husk adsorbent activated with HCl at the concentrations of 0N, 1N, 2N, 3N, 4N, and 5N, then mixed into the litter for flooring at the start of maintenance. The treatments were replicated five times, and the observed variables were ammonia level of litter cage, temperature heat index (THI) and litter pH. The analysis of variance showed that absorbents made of rice husk showed non-significant (P>0.5) effect on the level of ammonia letter of broiler chickens during finisher period, and litter pH. It is concluded that rice husk adsorbent that is activated with HCl is feasible for reducing the level of ammonia, THI, and litter pH of broiler cage. The HCl 2 N activator was the best treatment for activating rice husk adsorbent.