Judul: Peranan hormon tiroid dalam hubungannya dengan penggunaan protein terhadap performans broiler
Abstrak: Tujuan penelitian ini ingin mengetahui eeberapa jauh pengaruh temperatur lingkungan, beberapa tingkat protein dan energi ransum serta tingkat penambahan yodium dalam ransum terhadap produkai hormon tiroid yang diduga mempunyai hubungan dengan penggunaan protein. Selanjutnya ingin diketahui pula kemungkinan penggunaan triyodotironin (T3) dan tiroksin (Tq) sintetis serta kelenjar tiroid sapi yang dikeringkan (KTK) dalam ransum guna memperbaiki performans boiler yang dipelihara di daerah temperatur tinggi. Penelitian ini terdiri dari dua tahap yaitu Penelitian Pendahuluan dan Penelitian Akhir, masing-masing dilakukan dalam dua percobaan, dan setiap percobaan dilakukan aelama delapan minggu.
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Judul: Pengaruh penambahan hormon triyodotironin dan tiroksin dalam ransum terhadap pertumbuhan, produksi karkas dan kelenjar tiroid ayam pedaging
Abstrak: Penelitian ini dilaksanakan di Laboratorium Ternak Unggas, Jurusan Ilmu Produksi Ternak, Fakultas Peternakan, Institut Pertanian Bogor, selama delapan minggu mu lai dari tanggal 19 Oktober 1984 sampai dengan tanggal 14 Desember 1984. Tujuan penelitian untuk mengetahui tingkat penambah an hormon triyodotironin (Tz) dan Tiroksin (T₁) yang baik dalam ransum terhadap pertumbuhan, konsumsi ransum, konversi ransum, persentase bobot karkas, lemak abdomi- nal, kelenjar tiroid, kandungan protein dan air daging paha ayam pedaging dengan tingkat energi metabolis 3200 kkal dan protein 23 persen. Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap dengan tujuh perlakuan dan empat ulangan setiap perlakuan. T₂ yang diberikan terdiri dari tiga tingkatan yaitu 0.25 ppm, 0.75 ppm, 1.25 ppm dan T, terdiri tiga tingkatan yaitu 0.25 ppm, 0.75 ppm dan 1.25 ppm. Bahan yang digunakan 280 ekor anak ayam pedaging strain "Arbor Acres" (CP. 707). Un- tuk mengetahui pengaruh perlakuan terhadap parameter yang diamati, maka data yang diperoleh dianalisa dengan Analisis Sidik Ragam dan perbedaan antar perlakuan diuji dengan Uji Jarak Duncan. an Hasil penelitian menunjukkan bahwa tingkat penambah Tz dan dalam ransum sangat nyata (P/ 0.01) mempe- ngaruhi pertümbuhan ayam pedaging. Rataan pertambahan bobot badan pada tingkat penambahan 0.25 ppm T3, 0.75 ppm T dan kontrol sangat nyata (P/ 0.01) lebih tinggi dibandingkan pada tingkat penambahan 1.25 ppm T3. Rataan pertambahan bobot badan pada tingkat penambahan 0.75 ppm T3, 0.25 ppm T3 dan 1.25 ppm T4 nyata (P/ 0.05) lebih tinggi dibandingkan rataan pertambahan bobot badan pada tingkat penambahan 1.25 ppm T3. Penambahan T3 dan T4 tidak nyata mempengaruhi konsumsi ransum, tetapi sangat nyata (P/ 0.01) mempengaruhi konversi ransum. Rataan konversi ransum pada tingkat penambahan 1.25 ppm Tz sangat nyata (P/ 0.01) kurang baik dibandingkan dengan tingkat penambahan 0.25 ppm T3, 0.75 ppm T3, 0.25 ppm T4, 0.75 ppm T4, 1.25 ppm T4 dan kontrol…dst
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Judul: Systematics of Desmos (Annonaceae) in Malesia
Abstrak: Desmos is a woody climbing genus of Annonaceae which has been widely used as traditional medicine in several countries such as China, Indo-China, Thailand, and Peninsular Malaysia to treat dysentery, vertigo, fever, and postpartum. Phylogenetic studies on Desmos showed a close relationship between Desmos and Dasymaschalon. They share similar moniliform monocarpic fruits, but their flowers are different. It has been debated among Annonaceae researchers whether both genera should be treated as the same or distinct genus. Therefore, investigation on the taxonomic delimitation of Desmos species and Dasymaschalon will be necessary. Plastid genome (plastome) identification, leaf epidermal section of Desmos species and Dasymaschalon species, a taxonomic revision of Desmos in Malesia using morphological data, the spatial distribution of Desmos species in Malesia, and morphological and genetic variation in Desmos chinensis population using ISSR marker were used to investigate taxonomic delimitation of Desmos. Plastome study of Desmos chinensis and Dasymaschalon dasymaschalum was carried out to determine the origin, evolution, phylogenomics, and identify marker candidates for Desmos and Dasymaschalon or with other genera in Annonaceae. We discovered that the plastome of Desmos chinensis was circular with the size of 167,677 bp (smaller than Dasymaschalon dasymaschalum), consist of 111 genes, including 78 protein-coding genes, 29 transfer RNAs, and 4 ribosomal RNAs. The plastome showed a typical quadripartite structure, i.e., large single copy (LSC), small single copy (SSC), and two inverted repeats (IRs). The plastome of Dasymaschalon dasymaschalum was 191,488 bp in length, which also exhibited a typical quadripartite structure (LSC, SSC, and two IRs). Desmos chinensis and Dasymaschalon dasymaschalum showed different copies of accD, ndhD, ndhF, rps18, and ycf2. Protein coding genes of rpoB, rpoC1, rbcL, matK, rpl32, infA, and rpl36 were identified based on nucleotide diversity, sequence variability, and parsimony-informative sites. The genes are defined as molecular marker candidates of plastome for phylogenetic, barcoding, and population genetic research. We predicted that Desmos chinensis and Dasymaschalon dasymaschalum separated at ca. 64 million years ago during the Paleocene. Leaf anatomical feature study was carried to support the taxonomic delimitation of interspecific Desmos and intergeneric of Desmos and Dasymaschalon. Leaf anatomy in the paradermal section of 20 taxa (12 species of Desmos, eight species of Dasymaschalon) have been carried out. According to the leaf epidermal section, Desmos and Dasymaschalon are two distinct genera mainly distinguished based on the anticlinal wall undulation of epidermal cells and supported by variation of the crystal type and size. The anticlinal wall undulation of Desmos was almost straight to slightly wavy and never sinuous; meanwhile, Dasymaschalon varies from almost straight to deeply sinusoid. The crystals of Desmos consist of rhombohedral, druse type A, and druse type B crystals, whereas Dasymaschalon has prism, druse type A, druse type B, and druse type C crystals. The recent taxonomic revision using the morphological data was mainly based on the examination of about 1374 specimens from BO, L, WAN, ANDA, SING, SAN, K, P, HUH herbaria. The Desmos species in Malesia consists of eight species: D. acutus, D. chinensis, D. chryseus, D. dunalii, D. pedunculosus, D. subbiglandulosus, two new records: D. lawii and D. macrocarpus, and one
Keyword: Dasymaschalon, Desmoid clade, Magnoliid, plastid genome, phylogenomics analysis