Judul: Pengaruh Tepung Garut, Ubi Jalar, dan Onggok Sebagai Bahan Perekat Alami Pelet Terhadap Kualitas Fisik Pakan dan Performa Ayam Broiler
Abstrak: Binder is a substance that has the function to bind the feed component in the form of pellets so that its structure remains compact. The purpose of this research was to know the effect of addition of garut flour, sweet potato flour, and onggok as natural binder for pellet on physical quality of feed and performace of broiler chickens. Completely Randomized Design was used in this experiment, using 4 treatments and 3 replications on physical quality feed, and 4 treatments and 4 replications on performance of broiler. The treatments were R1 = control without binder, R2 = addition of onggok 2%, R3 = addition of sweet potato flour 2%, R4 = addition of garut flour 2%. The data were analyzed using Analysis of Varience (ANOVA) and significant results were further tested using Duncan’s Multiple Range Test. The results showed that addition of onggok 2% in feed influenced (P<0.05) angle of repose (26.30°) and pellet durability index (98.35%), but the treatments in terms did not influence the performance of broiler chickens. The conclusion of this experiment was that onggok 2% as binder yielded the best pellet quality of broiler chickens. The treatments did not influence the performance of broiler chickens. Addition onggok 2% as binder yielded the highest value of IOFCC (Rp. 2337.82/bird)
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Judul: Penggunaan Perekat Bentonite dengan Level Berbeda pada Pelet Ransum Ayam Broiler
Abstrak: Penelitian ini dilakukan untuk mengkaji pengaruh penambahan level bentonite terhadap komponen proksimat dan sifat fisik pakan ayam bentuk pelet. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan 5 perlakuan dan 4 ulangan. Metode yang digunakan adalah Rancangan Acak Lengkap (RAL) yaitu: P0 (ransum basal), P1 (ransum basal + 2% bentonite), P2 (ransum basal + 4% bentonite), P3 (ransum basal + 6% bentonite), P4 (ransum basal + 8% bentonite). Variabel yang diamati adalah komponen proksimat dan sifat fisik pelet. Data dianalisis dengan analysis of variance (ANOVA) dan apabila hasil menunjukkan berbeda nyata maka dilanjutkan dengan uji Duncan. Hasil penelitian menunjukkan bahwa pemberian bentonite dapat mengubah komponen proksimat yaitu menurunkan kadar air dan meningkatkan kadar abu. Pemberian 2 − 4% bentonite berpengaruh nyata (P<0,05) terhadap kualitas fisik meliputi berat jenis, ketahanan, dan kekerasan pelet. Dapat disimpulkan bahwa penambahan bentonite menghasilkan sifat fisik terbaik pada level pemberian 2%., This research was intended to examine the effect of increasing bentonite levels on the proximate composition and physical properties of chicken feed pellets. This research was conducted by implementing a Completely Randomized Design (CRD) with 5 treatments and 4 replications. The method used in this research was Completely Randomized Design (CRD), specifically: P0 (basal ration), P1 (basal ration + 2% bentonite), P2 (basal ration + 4% bentonite), P3 (basal ration + 6% bentonite), P4 (basal ration + 8% bentonite). The variables observed were the proximate composition and physical properties of the pellets. Subsequently, the data were analyzed by utilizing analysis of variance (ANOVA) and would be continued with Duncan’s test if the results show a significant difference. The result showed that the bentonite could alter the proximate components by lowering the moisture content and increasing the ash content. The administration of 2 – 4% bentonite was able to provide a significant effect (P<0.05) on physical quality, including the density, durability, and hardness of the pellets. Therefore, it can be concluded that the bentonite addition was capable of producing the finest physical properties at the 2% level of administration.
Keyword: additive, bentonite, pellet, adhesive, physical properties

Judul: Keanekaragaman bazzania di hutan sibayak sumatra utara
Abstrak: Hutan hujan tropis, termasuk hutan sibayak di sumatra utara, memiliki keanekaragaman lumut (bryophytes) yang tinggi. Bazzania adalah nama marga lumut yang termasuk dalam kelompok lumut hati (marchantiophyta). Laporan keanekaragaman bazzania di indonesia masih sangat jarang, dan sebagian besar laporan didasarkan pada penelitian di jawa. Penelitian ini bertujuan menginventarisasi dan menjelaskan keanekaragaman bazzania di hutan sibayak, sumatra utara. Spesimen lumut dikoleksi dari berbagai substrat (pangkal batang, kayu-kayu yang membusuk) di kanan-kiri jalur pendakian dalam hutan. Inventarisasi menghasilkan 14 jenis bazzania yaitu b. Calcarata, b. Densa, b. Erosa, b. Indica, b. Japonica, b. Loricata, b. Paradoxa, b. Pectinata, b. Praerupta, b. Spiralis, b. Subtilis, b. Tridens, b. Vittata dan bazzania sp. Hasil ini merupakan konfirmasi persebaran jenis-jenis bazzania di sumatra yang dilaporkan lebih dari 30 tahun lalu dan merupakan laporan pertama tentang keanekaragaman bazzania di hutan sibayak, sumatra utara. Habitat bazzania di hutan sibayak termasuk dalam zona vegetasi hutan dataran rendah hingga hutan pegunungan bawah (600-2000 m dpl). Jenis yang sering dijumpai dan paling melimpah adalah bazzania subtilis, sedangkan jenis yang jarang ditemukan adalah b. Calcarata, b. Loricata, b. Praerupta, dan b. Spiralis.
Keyword: bazzania, hutan sibayak, lepidoziaceae, marchantiophyta, sumatra