Judul: Arsitektur Perakaran Tiga Jenis Meranti dan Hubungannya dengan Karakteristik Pertumbuhan
Abstrak: Root is one of the important plant organ for supporting growth and development. The root functions include plant anchoring, water & nutrition absorption, and their distribution. Three species of Meranti were used in the research, namely Shorea stenoptera, Shorea palembanica, and Shorea leprosula. The aims of this research were i) to study the differences of root architecure formation on three species at HPGW ex-situ conservation area, ii) to study the relation of root architecture and phenotype (growth) characteristics of three species, including to determine Index of Root Anchoring (IRA) and Index of Root Binding (IRB). Root architecture was studied through root growth patterns, root morphology, and root growth variables.The results showed that i) the root growth patterns on three species were similar. That were classified into Champagnat group model with monopodial typical growth and tended to form orthotrophic branching. The root morphology was also similar, and the variance of root characteristic variables was not significant between species. ii) Total of root length significantly influenced height of plant and trunk volume, and the depth root significantly influenced height of plant and the crown diameter. The IRA values of S. stenoptera dan S. palembanica were categorized into medium group. The IRB value were categorized into low group. The IRA value of S. leprosula was categorized into high group, while and the IRB value was categorized into low group.
Keyword: Shorea, index of root anchoring, index of root binding, root architecture

Judul: Pertumbuhan dan pendugaan sifat kekakuan kayu berdiri Meranti (Shorea spp.) di Hutan Pendidikan Gunung Walat, Sukabumi
Abstrak: Meranti (Shorea spp.) adalah kelompok kayu yang bernilai ekonomi tinggi, dengan tingkat eksploitasi yang terus terjadi di hutan alam, sehingga diperlukan suatu tindakan konservasi. Hutan Pendidikan Gunung Walat (HPGW) telah melakukan upaya konservasi jenis Shorea spp. secara ex-situ, namun kegiatan evaluasi belum dilakukan secara berkala. Evaluasi pertumbuhan termasuk kesehatannya serta faktor-faktor yang terkait perlu dilakukan. Tujuan dari penelitian ini adalah untuk i) mendapatkan data pertumbuhan pohon, ii) mengetahui kesehatan tegakan, iii) menduga kandungan karbon organik, dan iv) menganalisa hubungan karakteristik kekakuan kayu berdiri berdasarkan metode non-destruktif dengan pertumbuhan. Hasil penelitian ini diharapkan dapat memberikan informasi dalam status pertumbuhan tanaman dan kekuatan kayu Shorea spp. yang berada di HPGW. Penilaian pertumbuhan, kesehatan hutan dan kandungan karbon dilakukan secara sensus pada seluruh individu pada kelima jenis tegakan Shorea spp. yaitu jenis Shorea palembanica, Shorea mecistopteryx, Shorea stenoptera, Shorea pinanga, Shorea leprosula. Untuk kekakuan kayu dilakukan dengan mengambil 7 pohon dari masing-masing jenis tegakan Shorea spp. untuk dilakukan pengukuran dan analisis lebih lanjut. Hasil penelitian menunjukkan bahwa S. stenoptera mempunyai persentase hidup tertinggi yaitu sebesar 71.25%. Sedangkan S. leprosula memiliki nilai pertumbuhan tinggi dan diameter terbesar yaitu 8.54 m dan 11 cm. Kondisi kesehatan tajuk berdasarkan nilai visual crown ratting jenis S. palembanica mempunyai kriteria rendah sedangkan untuk S. leprosula, S. mecistopteryx dan S. pinanga mempunyai kriteria sedang dan S. stenoptera mempunyai kriteria tinggi. Untuk kondisi kerusakan pohon berdasarkan nilai tree damage level index kelima jenis Shorea spp. di HPGW dalam keadaan sehat. Serapan karbon dari pohon Shorea spp. memberikan nilai sebesar 0.012 ton / 0.6 ha atau 0.020 ton/ha. Nilai kerapatan kayu tertinggi pada S. leprosula sebesar 0.57 g/cm3 dan yang terkecil pada S. palembanica sebesar 0.47 g/cm3. Kecepatan gelombang ultrasonik terbesar pada S. palembanica sebesar 4255 m/detik dan energi tersebar pada jenis yang sama yaitu 4046 mV. Sedangkan nilai modulus elastisitas dinamis paling tinggi pada S. pinanga yaitu sebesar 106401 kg/cm2.
Keyword: Shorea spp, visual crown ratting, tree damage level index, carbon, wood strength

Judul: Deteksi Antibodi Anti-Escherichia coli K99 Dalam Kolostrum Induk Sapi Friesian Holstein Post Vaksinasi Escherichia coli Polivalen dengan Teknik
Abstrak: MIZWAR AMANSYAH. B04051631. Detection of Anti-Escherichia coli’s antibody for Friesian Holstein’s cow colostrum Post E. coli Vaccination with ELISA Method. Under directed: ANITA ESFANDIARI dan SRI MURTINI. This experiment was conducted to detect Escherichia coli (E. coli) K99 antibody in colostrum of Friesian Holstein’s cows vaccined by E. coli K99. Six pregnant cows were vaccined three times at 8, 6, 4 weeks before parturition. The vaccine was given by intramuscular with 5 ml/ animal doses. The colostrum was collected until 5th day after parturition. Immunoglobulin Gamma (IgG) antibody in the colostrum was detected using indirect ELISA method. The result of research shown that antibody can detected from first until colostrum 9, with concentration about 1,054 – 1,129 μg/100 μl. The highest colostrum concentration there in colostrum 1 with 1,129 ± 0,005 μg/100 μl. The conclusion of this research is pregnant cows which given vaccine E. coli polivalen can produce of spesific antibody from E. coli K99 in colostrum first until colostrum nineth with IgG concentration have decrease from colostrum first until colostrum third. Key word: Escherichia coli K99, bovine colostrum, ELISA
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