Judul: Characterization of phenotypic traits as early conservation strategy of the balenggek chicken in West Sumatera
Abstrak: The Balenggek chickens have been kept by rural communities for many generations in Payung Sakaki and Tigo Lurah, Regency of Solok, Province of West Sumatera. The Balenggek chickens is a long crower type fowl. This study was carried out to characterize phenotypic traits and to conduct crow analyze in the Balenggek chicken. A survey was carried out during June to December 2000 in 56 house holds. The survey guide was a questionnaire related to socio demographic status of the holders, flock characteristic and management of breeding stock. These data were processed using the Minitab. The crows were recorded using a Sony TCM-343 cassette recorder. The crow were analysed using Sound forge XP 4.5 and Spectrogram 6.4 the sound analysis programs and displayed a wave form and spectrogram. In the Balenggek chicken, crows is produced only by males for four reasons then; to proclaim to other males that this is his territory, to attract female to mate with them, as a prayer, and as a timer. It's crow can last 2.08-4.43 seconds. The average crow has 5.07 syllables, divided into three segments: first, middle and last segment. The frequency of crowing is 8.08 times per 10 minutes. The peak of crowing activity happen in the morning time with a frequency of 9.59 times per 10 minutes. The duration of a crow vary from 2.08 to 4.43 second. Conservation of the Balenggek chicken is a necessity of the small population, and also its limited distribution in a small area, and the exploitation rate from village area. Conservation model to proposed : 1). In-situ conservation in village area, and 2). The Balenggek chicken park as a tourist attraction. Based on the results, it is suggested the chicken crow have well defined acoustic structures, characteristic of each species as visualized in sound spectrogram and wave forms. The different structures of crow component can be used as an indicator for total syllables of a crow, and may be as a tool by a jury in Balenggek chicken crowing contests. Wave form displays can be used as an indicator of crow pattern. The kst time to conduct crowing contest is in the morning hours (07.00- 1 1.00).
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Judul: Karakteristik morfologi ayam pelung dewasa diKecamatan Cibeber dan Gekbrong Kabupaten Cianjur, Jawa Barat
Abstrak: Pelung chicken as one of local chicken in Indonesia that have specificity, especially on male chicken which long voice, beautiful, and specific rhyme. The male of Pelung chicken have heavier body weight than any other male chicken. It show a potential characteristic as meat type chicken. The purpose of this research was to collect information of specific morphological characteristic of Pelung chicken in Cianjur. The research was conducted in subdisdricts of Cibeber and Gekbrong in two months, from May up to the end of Juty 2006. Data were collected from 63 heads of Pelung males and 37 heads of hens in Cibeber, a9 heads Pelung males and 50 heads of hens in Gekbrong. The morphological chracteristic of Pelung chicken was analyzed by using Principal Component Analysis (PCA). The result of Principal component Analysis showed that males Pelung chicken in the subdistrict of Geicbmng had bigger body size than Pelung chicken in the subdistrict of Cibebe7, while body shape- was similar. Body size of male Pelung chicken could be identified by chest circumference, while body shape by femur and neck lenght Size and shape of female Pelung chicken in two subdistrict were different Body size of female pilung chicken were identified by wing lenght and ched circumferenced, while body shape by neck lenght Keyword : Pelung chicken, morphology, Principal Component Analysis.
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Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik