Judul: Pengaruh Bobot Telur  terhadap Daya Tetas serta Hubungan  antara  Bobot Telur  dan Bobot  Tetas Itik Mojosari
Abstrak: Penelitian ini dilakukan di Laboratoriurn Ilmu Produksi Ternak Unggas, Falcultas Peternakan, Institut Pertanian Bogor, dari tanggal 16 September 2000 sa~npaid engall tanggal 16 Nopember 2000. Tujuan dari penelitian ini adalah untulc mengetallui pengaruh bobot telur terl~adap daya tetas serta hubungan antara bobot telur dm bobot tetas.
Keyword: 

Judul: Pengaruh bobot telur terhadap nisbah kelamin, daya tetas dan penyusutan telur itik tegal
Abstrak: Penelitian ini dilaksanakan di Laboratorium Ilmu Produksi Ternak Unggas Fakultas Peternakan, Institut Pertanian Bogor, dimulai pada tanggal 25 November 1990 sampai dengan tanggal 3 Januari 1991. Sebagai materi penelitian yang digunakan adalah telur tetas Itik Tegal sebanyak 300 butir, berasal dari peternakan rakyat di Cianjur. Peubah yang diamati dalam penelitian ini adalah nisbah kelamin, daya tetas dan penyusutan telur. Untuk mengetahui pengaruh perlakuan terhadap peubah diamati dianalisis dengan menggunakan sidik ragam. yang Data dalam persen sebelum dianalisis ditransformasikan ke dalam Aresin V% Hasil penelitian menunjukkan bahwa rataan bobot telur Itik Tegal yang diperoleh adalah sebesar 66.73 ± 4.02 gram. Bobot telur ternyata berpengaruh sangat nyata (P < 0.01) terhadap rataan nisbah kelamin. Kelompok Telur berat menghasilkan rataan nisbah kelamin sebesar 1.95 ± 0.48, sedang Kelompok Telur Ringan menghasilkan rataan nisbah kelamin sebesar 0.25 ± 0.04. Bobot telur tidak berpengaruh nyata terhadap rataan daya tetas. Rataan daya tetas pada Kelompok Telur Berat dan Kelompok Telur Ringan masing-masing sebesar 40.89±6.91 persen dan 30.21 ± 4.01 persen. Bobot telur tidak berpengaruh nyata terhadap rataan persentase penyusutan telur. Rataan persentase penyusutan telur pada Kelompok Telur Berat dan Kelompok Telur Ringan masing-masing sebesar 5.02 ± 0.62 persen dan 5.39 1.12 persen.
Keyword: 

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