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: Comparison of Carcass and Non-Carcass Weight  Percentage between IPB-D2 Chickens and IPB-D3 Chickens at Different Slaughter  Age
Abstrak: Ayam IPB-D1 sebagai rumpun baru ayam lokal merupakan upaya meningkatkan mutu genetik ayam lokal Indonesia. Ayam IPB-D2 dan IPB-D3 keturunan ayam IPB-D1 diseleksi untuk dijadikan calon indukan ayam IPB-D1 unggul. Penelitian ini bertujuan menambah informasi, mengkaji, dan membandingkan persentase bobot karkas dan non-karkas pada galur ayam IPB-D2 dan IPB-D3 pada umur potong berbeda. Ayam yang digunakan sebanyak 30 ekor untuk masing masing galur. Peubah yang diamati yaitu bobot dada, paha atas, paha bawah, sayap, punggung, kepala, leher, ceker, hati, usus, rempela, dan jantung. Data yang diperoleh dianalisis dengan uji deskriptif dan uji t. Hasil penelitian menunjukkan persentase bobot karkas ayam jantan IPB-D2 G4 lebih kecil dibandingkan dengan ayam jantan IPB-D3 G2. Persentase bobot non-karkas ayam jantan IPB-D2 G4 lebih besar dari ayam jantan IPB-D3 G2. Ayam IPB-D3 memiliki peluang yang unggul sebagai calon galur pejantan dan ayam penghasil daging. Ayam IPB-D2 memiliki peluang yang unggul sebagai calon galur betina., The IPB-D1 chicken as a new species of local chickens is an effort to improve the genetic quality of Indonesia's local chickens. Chicken IPB-D2 and IPB-D3 incubators of chicken IPB-D1 were selected for special breed chicken IPB-D1. The study aims to add information, review, and compare the percentage of weight of carcass and non-carcass in chicken galleys IPB-D2 and IPB-D3 at different cut ages. Chickens used up to 30 chickens each. The observed change was the weight of the chest, upper thigh, lower thigh, wing, back, head, neck, neck, claw, liver, intestines, and heart. Data obtained was analyzed with a descriptive and t-test results showing a percentage of cock weight in IPB-D2 G4 cock was smaller than the IPB-D3 G2 cock. Non-carcass a cock IPB-D2 G4 was greater than a cock IPB-D3 G2. The chicken IPB-D3 has a distinct chance of becoming a male and flesh-producing hen. The IPB-D2 chicken has an excellent opportunity as a female trowel.
Keyword: carcass weight, IPB-D2 line chicken, IPB-D3 line chicken, non-carcass  weight

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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