Judul: Pengaruh vaksinasi avian influenza inaktif terhadap produktifitas telur ayam bibit induk tipe pedaging : studi kasus di peternakan ayam bibit induk tipe pedaging di Bogor
Abstrak: Penelitian bertujuan untuk melihat pengaruh vaksinasi Avian Influinza (AI) inaktif terhadap produksi telur ayam bibit induk tipe pedaging. Penelitian ini merupakan studi kasus di peternakan ayam bibit induk tipe pedaging di Bogor. Sebanyak 5000 ekor ayam bibit induk tipe pedaging dalam satu kandang tertutup (closed house) terbagi dalam 10 pen dan setiap pen diisi 500 ekor ayam. Vaksin Al inaktif diaplikasikan intra muscular. Dosis dan waktu vaksinasi dilakukan sesuai dengan petunjuk perusahaan. Produksi telur ayam tersebut diamati sejak berumur dua puluh empat minggu sampai dengan 40 minggu. Titer antibodi terhadap AI dilihat dan diamati pengaruhnya terhadap produksi telur serta dilihat juga korelasinya dengan analisa regresi. Dari hasil penelitian ini menunjukkan bahwa vaksinasi AI dengan vaksin Al inaktif, baik menjelang produksi maupun saat puncak produksi tidak mempengaruhi jumah produksi telur dan tidak menyebabkan penurunan produksi telur.
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Judul: Studi Kasus pada Peternakan Ayam Indukan Pedaging
Abstrak: Respon Kekebalan Vaksin Avian Influenza Inaktif pada Ayam Indukan Pedaging Strain Hubbard (Studi Kasus pada Peternakan Ayam Indukan Pedaging). Dibawah bimbingan drh. Sri Murtini, MSi dan Ratu Cahyaningrat, SE. Penelitian ini bertujuan untuk melihat efikasi vaksin AI inaktif pada peternakan ayam indukan pedaging. Penelitian ini merupakan studi kasus di sebuah peternakan ayam indukan pedaging. Sebanyak 20.000 ekor ayam dibagi dalam empat kandang tertutup (close house) yaitu K1, K2, K3, dan K4 yang masing-masing kandang diisi oleh 5000 ekor ayam. Tiap kandang terdiri dari 10 pen dan setiap pen diisi oleh 500 ekor ayam. Vaksinasi AI menggunakan vaksin AI inaktif (Killed Vaccine) konvensional homolog. Vaksinasi dilakukan pada saat ayam berumur 10 minggu, 15 minggu, dan 32 minggu. Vaksinasi dilakukan dengan rute intramuskular, dosis yang berikan sesuai dengan anjuran perusahaan yaitu 0,5 ml / ekor. Hasil penelitian menunjukkan bahwa vaksin AI inaktif mampu menginduksi pembentukan antibodi dengan titer antibodi protektif 3 minggu setelah vaksinasi pertama. Vaksinasi kedua mampu meningkatkan titer antibodi dan titer tersebut bertahan sampai 15 minggu setelah vaksinasi kedua. Vaksinasi ketiga mampu meningkatkan titer antibodi dan titer protektif tersebut dapat bertahan sampai masa akhir produksi ayam (umur 60 minggu). Dari hasil pemeriksaan pada anak ayam yang divaksinasi (DOC) menunjukkan bahwa titer antibodi tersebut juga diturunkan pada anak ayam dengan titer rataan pada masing-masing kelompok adalah 24,4 (K1), 24,2 (K2), 24,4 (K3), dan 24,0 (K4).
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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