Judul: Tingkah laku ayam broiler di kandang tertutup dengan suhu dan warna cahaya berbeda
Abstrak: Daging ayam sebagai hasil utama industri peternakan ayam broiler diharapkan mampu memenuhi kebutuhan kuantitas dan kualitas protein bagi masyakat Indonesia. Keberhasilan budidaya dipengaruhi oleh aspek manajemen diantaranya suhu dan pencahayaan di dalam kandang. Suhu lingkungan tinggi dan fluktuatif di Indonesia merupakan kendala dalam keberhasilan budidaya ayam broiler. Pengaturan cahaya yang meliputi intensitas, lama pencahayaan, dan terutama warna masih terbatas digunakan oleh masyarakat peternak karena menggunakan kandang terbuka. Pemeliharaan pada kandang tertutup memungkinkan untuk melakukan pengaturan suhu dan warna cahaya. Suhu dan warna cahaya memiliki pengaruh dalam merangsang tingkah laku dan berakibat kepada performa ayam broiler.
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Judul: Studi Perilaku Ayam Broiler Berbasis Liputan Visual dalam Kandang Tertutup
Abstrak: One of the problems being faced by Indonesian society is inadequacy of meat supply for consumption per capita. One of the most popular and affordable meat in Indonesia, at large, is chicken meat. However, the chicken meat production and supply up to now is still inadequate to meet the meat requirements of Indonesian people. The main factor that causes inadequate of chicken meat production is on-farm managerial factor. This research aims to study the behavioral characteristics of broiler in the broiler house based on visual orservation. The result of this research is expected to be able to increase the quality of broiler production management. The observations were concentrated on the behavior of broilers due to three parameters: temperature, lighting, and noise. The observed behavior include the behavior of locomotion and rest, grouping, shelter seeking, eat and drink, and panting. Temperature is the most significant parameters affecting the behavior of locomotion and rest, grouping, shelter seeking, eat and drink, and panting in broilers in this research. Based on this research, 60% of broilers are affected by high temperature exposure. Panting was the most observable behavior in high temperature exposure. The next observable behavior was shelter seeking due to high temperature exposure. Light intensity directly affects the behavior of locomotion and rest, and the behavior of eat and drink. The most observable behavior affected by increasing of light intensity was locomotion. The higher the light intensity the higher the quantity of locomotion of broilers. This implies that broilers become more active and has less of rest. Noise lower than 80 dB did not affect significantly the behavior of broilers.
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Judul: Phylogenetic analysis of subgenus Dieramalpinia (Alpinia carolinensis clade) - Zingiberaceae based on ITS sequences
Abstrak: The most recent infra-generic classification of Alpinia Roxb. by Smith divided the genus into two subgenera (Alpinia and Dieramalpinia) with 11 sections and 12 subsections. One of the sections of Alpinia subgenus Dieramalpinia is Myriocrater which contains about 16 species. The most recent phylogenetic study that included species from Alpinia subgenus Dieramalpinia was done by Kress et al. (2007). They sampled only eight species and found that these were nested within a clade referred to as the Alpinia carolinensis clade. This clade was well supported and may be separated as a genus if sampling more species confirms the result. The objectives of the present project are to compare ITS within one species; to test the monophyly of Alpinia section Myriocrater; to test whether adding more samples still supports the Alpinia carolinensis clade. The present study included thirty-nine samples representing nineteen taxa from Alpinia; seven samples are still unidentified at species level. Sequences of the Internal Transcribed Spacer were used in the analysis. The result showed that ITS sequence of Myriocrater’s species are more conserved than another group in Zingiberaceae. There are base variations within species level. The Alpinia section Myriocrater plus five species from other section is not monophyletic. The Alpinia carolinensis clade still includes three sections of Smith classification (Dieramalpinia, Myriocrater and Pycnanthus) from subgenus Dieramalpinia. Alpinia subgenus Dieramalpinia section Eubractea and one species of section Dieramalpinia are separated into another clade.
Keyword: Alpinia, Myriocrater, Dieramalpinia, Alpinia carolinensis clade