Judul: Pengaruh tingkat kapadatan kandang pada pemeliharaan di atas lantai kawat ( Wire - Floor ) terhadap performans ayam broiler
Abstrak: Penelitian ini dilakukan di Bagian Ternak Unggas, Fakultas Peternakan, Institut Pertanian Bogor, selama satu setengah bulan sejak tanggal 29 September 1981 sampai dengan 10 November 1981. Tujuan dari penelitian adalah melihat pengaruh kepadatan (stocking rate) pada kandang dengan sistem lantai kawat terhadap performans ayam broiler. Tingkat kepadatan yang digunakan adalah 9 ekor per meter persegi; 12 ekor per meter persegi dan 15 ekor per meter persegi. Rancangan percobaan yang digunakan adalah rancangan acak lengkap (Completely Randomized Design), dengan perlakuan tiga macam kepadatan kandang untuk melihat pengaruhnya terhadap pertambahan berat badan, berat badan akhir minggu percobaan, konsumsi ransum dan konversi ransum serta kualitas karkas. Untuk mengukur perbedaan rata-rata antar perlakuan dilakukan Uji Jarak menurut prosedur Duncan. Hasil penelitian menunjukkan bahwa pengaruh tingkat kepadatan 9 ekor per meter persegi; 12 ekor per meter persegi dan 15 ekor per meter persegi terhadap performans ayam broiler yaitu pertambahan berat badan, berat badan akhir minggu percobaan serta konsumsi ransum adalah sangat nyata (P<0.01). Tingkat kepadatan 9 ekor per meter persegi menghasilkan pertambahan berat badan dan berat badan akhir yang paling tinggi dibandingkan dengan tingkat kepadatan 12 ekor dan 15 ekor per meter persegi. Demikian pula dari segi "Income over feed and chick cost", yang paling menguntungkan adalah pada tingkat kepadatan kandang 9 ekor per meter persegi daripada kepadatan kandang 12 ekor dan 15 ekor per meter persegi.
Keyword: 

Judul: Pengaruh Tingkat Kepadatan Kandang terhadap Performans Ayam Jantan Tipe Medium
Abstrak: Penelitian ini dilakukan di Laboratorium Ternak Unggas, Jurusan Ilmu Produksi Ternak, Fakultas Peternakan, Institut Pertanian Bogor, selama sepuluh minggu sejak tanggal 3 September sampai dengan tanggal 11 Nopember 1985. Tujuan penelitian adelah diutamakan untuk mengetahuf pengaruh tingkat kepadatan kandang terhadap performans ayam jantan tipe medium 0.5 mK2, ep6a deaktaonr pkaenrd 0an.5g my 3 n ,g 7d eigkuonra kpeenr 0a.c5a lma2h 5da ne k8o re pkeorr per 0.5 m2. Jumlah ayam yang digunakan sebanyak 234 ekor DOC strain Super Harco yang dipelihara sampai berumur sepuluh minggu.
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