Judul: Prediction of Combining Ability and DxT Progeny Performance of Oil Palm (Elaeis guineensis Jacq.)
Abstrak: Best linear unbiased prediction (BLUP) adalah metode yang dirancang untuk memprediksi nilai genetik dari data yang tidak seimbang. Analisis BLUP yang memanfaatkan informasi kekerabatan dapat mengurangi bias akibat ketidakseimbangan data. Penelitian ini bertujuan untuk estimasi parameter genetik dan daya gabung umum tetua melalui pengujian progeni dan validasi model prediksi progeni persilangan-persilangan yang tidak diuji (untested crosses). Pengamatan dilakukan pada 11 karakter yang diamati pada tahun 2015 - 2017. Hasil analisis ragam menunjukkan karakter mesokarp/buah dan inti/buah lebih dikendalikan oleh tetua Tenera. Berdasarkan pendugaan nilai daya gabung tetua Dura, BJ5686D dan BJ5678D dapat digunakan untuk merakit varietas dengan karakter unggul produktivitas dan rendemen yang baik. Tetua Tenera AP141T dapat digunakan untuk merakit varietas unggul yang memiliki kandungan oil related trait yang baik. Tetua BJ5819T dan BJ5817T dapat digunakan untuk menghasilkan varietas dengan laju pertumbuhan meninggi yang lambat dan oil related trait tinggi. Daya gabung khusus tidak nyata untuk semua karakter. Hasil 2-fold cross-validation menunjukkan akurasi untuk karakter jumlah tandan, tandan buah segar, produksi CPO, panjang rachis, inti/buah, minyak/mesokarp kering, dan minyak/tandan sebesar 0,52 – 0,88. Umur ekonomis dan kerapatan tanam kelapa sawit dipengaruhi oleh tinggi tanaman. Seleksi simultan pada karakter agronomi penting memungkinkan pemulia memilih progeni dengan ideotipe yang diinginkan. Penelitian bertujuan untuk mengidentifikasi genotipe terbaik berdasarkan berbagai karakter. Penelitian ini menggunakan data rerata umur 7-9 tahun pada 10 karakter. Material genetik terdiri atas 21 progeni tested crosses dan 56 progeni untested crosses. Seleksi dilakukan menggunakan dua metode yaitu MGIDI dan MVSI. BJ44/05, UC43, UC18, UC27, UC34, UC49, UC2, UC33 terpilih berdasarkan indeks MGIDI dan MVSI. Progeni-progeni ini merupakan kandidat unggul yang memiliki laju pertumbuhan meninggi lambat dan produksi tinggi. Informasi ini dapat dimanfaatkan dalam program pemuliaan berikutnya., Best linear unbiased prediction (BLUP) is a method designed to predict genetic values from imbalanced data. BLUP analysis that utilizes kinship information can reduce bias due to data imbalance. This study aims to estimate genetic parameters and the general combining ability of parents through progeny testing and validation of prediction models for untested crosses. Observations were made on 10 characters observed in 2015 - 2017. The results showed that the analysis of mesocarp/fruit and kernel/fruit characters was more controlled by Tenera parents. Based on the estimation of the general combining ability of Dura parents, BJ5686D and BJ5678D can be used to produce varieties with superior characteristics of productivity and oil yield. Tenera parent, AP141T can be used to produce superior varieties that contain good oil-related traits. The parents BJ5819T and BJ5817T can be used to produce varieties with slow height increment and high oil-related traits. Special combining abilities are not real for all characters. The results of the 2-fold cross-validation showed that the accuracy for number of bunch characters, fresh fruit bunches, CPO production, rachis length, kernel/fruit, dry oil/mesocarp, and oil/bunches was 0.52 – 0.88. The economic age and planting density of oil palm are influenced by plant height. Simultaneous selection based on important agronomic traits allows breeders to select progeny with the desired ideotype. The research aims to identify the best genotype based on various characters. This research uses data of 7-9 years for
Keyword: BLUP, multi-trait, NC II, progenies, RRS

Judul: Genetic Diversity and Identification of Specific Production Character Markers of Oil Palm Progeny and Parent with SSR Marker
Abstrak: This thesis studies the relationship between microsatellite markers with the character of the production of oil palm (Elaeis guineensis Jacq.) in an attempt to get specific markers that can be useful in the parental selection. The first experiment was carried out by observing the genetic diversity of 80 progeny palm oil that has been classified by the character of high and and low production. Each of these 20 individuals were observed for the characters of oil to bunch (OB), bunch number (BN), oil yield (OY) and fresh fruit bunches (FFB). The results showed a fairly high genetic diversity of the four characters, which is shown by the quite high average percentage of polymorphic and PIC, ie 52.78% and 0.51. Construction of dendogram based on UPGMA can distinguish the characters from one to another by the percentage of genetic similarity 56-100% or ~44% of genetic diversity. The separation of the characters into the four groups was also confirmed using PCoA (Principle Coordinate Analysis). It also found the specific markers for the characters observed, ie one marker specific to the character of OB, four markers specific to the character of BN, one marker specific to the character of OY and two marker specific to the character of FFB. The second experiment was conducted to identify specific markers of the four characters. Correlation and stepwise regression approach used in this experiment. The results showed that there are 11 specific markers were obtained using the correlation approach, as well as 16 specific markers obtained using stepwise regression approach. From the results it is known that one marker positively correlated and regressed to the OB, two markers positively correlated and regressed to the BN, one marker positively regressed to OY, but only one marker that positively correlated to OY, and no one is positively correlated or regressed to FFB. The third experiment was conducted to determine the genetic diversity of Dura parents which is used as female parent in experiments 1 and 2, and its role in the diversity of the four characters tested. Two populations of Dura selfing with 30 samples per population used for analysis. The analysis showed parental separation into two groups based on the selfing. Group A, with ~20% genetic diversity, is the result of D1 selfing. While Group B, with ~28% genetic diversity is the result of D2 selfing. Both genetic material has a low genetic diversity within groups, but higher genetic diversity between group (~ 68%), as well as confirmed by PCoA and Structure. The results of t-test analysis showed that the pair D1 and D2 with a fourth character, has a significant effect on the character of the OB, OY and FFB, while the character of BN, Dura influence is not significant.
Keyword: Elaeis guineensis Jacq, half-sibs, Dura Deli, specific markers, correlation, stepwise regression

Judul: Staphylococcosis Pada Unggas dan Masalah Penanggulangannya
Abstrak: Staphylococcosis pada unggas disebabkan oleh bakteri Staphylococcus aureus (S. aureus). Secara normal kuman tersebut terdapat dimana-mana seperti di selaput lendir manusia dan hewan, kulit, kaki, paruh, udara, mesin penetas dan kandang-kandang unggas. Pada keadaan tertentu jika populasinya menjadi tinggi di dalam tubuh hewan dapat menimbulkan penyakit (Hoofstad et al., 1972; Poernomo, 1978 dalam Achdijati, 1983) yang cukup merugikan terlihat dari angka kematian unggas yang terinfeksi. S Infeksi S. aureus pada unggas dapat bersifat akut dan menahun. Pada kasus yang akut biasanya terdapat kea- daan septikemia dan kematian unggas yang cepat. Sedang- kan kasus yang menahun atau sub akut dijumpai pada keadaan synovitis, dermatitis, arthritis, spondylitis, sternal bursitis dan abses di bawah kulit (Gordon, 1977). ...
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