Judul: Persentase Bobot Karkas, Potongan Komersial dan Non Karkas Ayam IPB-D2 Generasi Keempat pada Umur 10 sampai 12 Minggu
Abstrak: Ayam lokal umumnya mudah dipelihara dan sistem ketahanan terhadap penyakit cukup baik serta adaptasi terhadap lingkungan cukup tinggi. Ayam IPB-D2 merupakan galur baru indukan (female line) yang dibentuk dari hasil seleksi ayam IPB–D1 berdasarkan sifat ketahanan penyakit yang baik dengan proporsi darah sama dengan ayam IPB–D1. Tujuan penelitian ini untuk mengkaji dan mengevaluasi persentase bobot karkas dan non-karkas, serta potongan komersial karkas dan non-karkas ayam IPB–D2 umur 10 hingga 12 minggu. Penelitian ini menggunakan ayam IPB-D2 Sukabumi sebagai data primer dan ayam IPB-D2 Boyolali sebagai data sekunder dengan jumlah ayam masingmasing 30 ekor. Jumlah ayam IPB-D2 G4 keseluruhan yang digunakan sebanyak 15 ekor. Hasil penelitian ini menunjukkan bahwa persentase karkas ayam IPBD2 Sukabumi lebih rendah dibandingkan Boyolali. Namun persentase bagian non karkas ayam IPB-D2 Sukabumi lebih tinggi dibandingkan Boyolali., Local chickens are generally easy to raise and have a fairly good system of disease resistance and high adaptation to the environment. IPB-D2 chickens are a new breed of broodstock (female line) which was formed from the selection of IPB-D1 chickens based on good disease resistance characteristics with the same blood proportion as IPB-D1 chickens. The aim of this research was to examine and evaluate the percentage of carcass and non-carcass weight, as well as commercial cuts of carcass and non-carcass IPB–D2 chickens aged 10 to 12 weeks. This research used IPB-D2 Sukabumi chickens as primary data and IPB-D2 Boyolali chickens as secondary data with 30 chickens each. The total number of IPB-D2 G4 chickens used was 15. The results of this research show that the percentage of IPB-D2 Sukabumi chicken carcasses is lower than Boyolali. However, the percentage of non-carcass portion of IPB-D2 Sukabumi chicken is higher than Boyolali.
Keyword: carcass, commercial, IPB-D2 chicken, non-carcass

Judul: Carcass Percentage, Commercial Cuts, and  Non-Carcass Parts of IPB-D3 Chickens at Different Slaughter Ages and Locations
Abstrak: Ayam lokal memiliki ketahanan tubuh yang lebih tinggi dibandingkan dengan ayam ras. Ayam IPB-D3 merupakan calon galur baru pejantan (male line) yang dibentuk dari hasil seleksi ayam IPB-D1 G7 berdasarkan pertumbuhan bobot badan yang cepat pada umur 12 minggu. Pertumbuhan bobot badan yang cepat dapat dipengaruhi oleh genetik dan lingkungan. Penelitian ini bertujuan mengevaluasi persentase karkas, potongan karkas secara komersial dan bagian non karkas pada ayam IPB-D3 pada umur potong dan lokasi berbeda, yaitu Sukabumi, Bogor, dan Boyolali. Penelitian ini menggunakan ayam IPB-D3 Sukabumi sebagai data primer dan ayam IPB-D3 Bogor dan Boyolali sebagai data sekunder pembanding, masing-masing berjumlah 30 ekor. Berdasarkan hasil yang didapat adalah ayam IPB-D3 Sukabumi memiliki persentase karkas yang lebih rendah dibandingkan dengan ayam IPB-D3 Bogor dan Boyolali, akan tetapi bagian persentase non karkas ayam IPB-D3 Sukabumi lebih tinggi dibandingkan dengan ayam IPB-D3 Bogor dan Boyolali, Local chickens have higher immune resilience compared to commercial breeds. IPB-D3 chickens are a new male line strain created by selecting IPB-D1 G7 chickens based on their rapid body weight growth at 12 weeks. Tight body weight growth can be influenced by genetics and the environment. This research aims to evaluate the carcass percentage, commercially cut carcass pieces, and non-carcass parts of IPB-D3 chickens at different ages and locations, namely Sukabumi, Bogor, and Boyolali. The study utilizes IPB-D3 Sukabumi chickens as primary data and IPB-D3 Bogor and Boyolali chickens as secondary comparative data, with each group comprising 30 individuals. Based on the results, it is found that IPB-D3 Sukabumi chickens have a lower carcass percentage compared to IPB-D3 Bogor and Boyolali chickens. However, the percentage of non-carcass parts in IPB-D3 Sukabumi chickens is higher than in IPB-D3 Bogor and Boyolali chickens
Keyword: Carcass percentage, Non-carcass percentage, IPB-D3 chicken

Judul: Peran Surfaktan Setiltrimetilamonium Bromida dan Natrium Dodesil Sulfat pada Sintesis ZnO dengan Metode Hidrotermal
Abstrak: Zno crystal is the main preference material in various applications recently, such as in semiconductors, ultraviolet lasers, and catalysts. This study aims to synthesize ZnO with addition of surfactant. ZnO crystals were synthesized by reacting ZnSO4, KOH, and surfactants using hydrothermal method. The first step was to determine the best ratio of ZnSO4: KOH (1:2; 1:3; 1:4, and 1:5) based on X-ray diffraction. The second step was to evaluate the role of surfactan cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) on the synthesis of ZnO crystals. The result of this study showed the best ratio of ZnSO4:KOH was 1:3, based on the least of impurities and the highest degree of crystallinity (85.64%). The addition of surfactant CTAB and SDS in the synthesis of ZnO increased the degree of crystallinity, which were 98.28% and 92.17%, respectively. Based on mathematical calculation using Scherrer equation, the crystal size without surfactant was 32 nm, whereas with CTAB and SDS the crystallited size were 28 nm and 29 nm, respectively. The degree of crystallinity and crystal size indicated that CTAB surfactant produce ZnO crystals with the best characteristics as compared to SDS surfactant or without surfactant.
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