Judul: Pendugaan Nilai Nilai Pemuliaan Sifat Produksi Susu pada Pejantan Sapi Friesian Holstein Di BBPTU Sapi Perah Baturraden Purwokerto.
Abstrak: A bull can not produce milk, therefore it was necessary to estimate its milk genetic ability. Progent test can be done to evaluate milk transmitting ability of bulls on the base of milk yields of their daughters. Contemporary Comparison (CC) method is one method that can be used to estimate breeding values of sires in the progeny test. This research was aimed to estimate breeding values of milk transmitting ability of Holstein Friesian (HF) Sires based on the progeny test in BBPTU-SP Baturraden, Purwokerto. A total number of 176 records of first (1st) lactation milk yields from the daughthers of 83 sires were collected in during a period of 2005-2010. Data of milk yield per lactation was calculated by summing daily milk yield during a certain lactation period. Those that were standardized to 305 days of lactation and to mature eqivalent by Dairy Herd Improvement Association-United State Department of America (DHIA-USDA) in order to estimate heritability (h2) and breeding values of milk yield. Heritability value was estimated by paternal half sib correlation method, while breeding values of sires were estimated by the CC method. The average of 1st lactation milk yields was 3.922 kg/lactation. The averages of th 1st milk yields by the years from 2006 to 2011 were succesively 4,595, 3,765, 3,760, 2,928, 3,266, and 2.527 kg/lactation. The h2 value for the 1st lactation milk yields was 0.30±0.40. The results of estimating breeding values of milk of sires showed that from the 83 heads of sires evaluated resulted positive breeding values by 97,59% and negative breeding values by 2,41%. By considering the sires at the best 5% ranks were those with the breeding values of 164.24-219.86.
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Judul: Produksi susu sapi perah Friesian Holstein berdasarkan jenis kelamin anak di BBPTU Baturraden Jawa Tengah
Abstrak: Penelitian ini bertujuan untuk mengevaluasi produksi susu berdasarkan jenis kelamin pedet yang dilahirkan. Jumlah ternak yang diteliti dalam penelitian ini sebanyak 1 078 ekor. Lokasi penelitian di BBPTU Baturraden yang terletak di Jawa Tengah. Data yang diperoleh adalah data sekunder. Data diperoleh dari hasil recording laktasi sapi, usia, produksi susu, dan jenis kelamin pedet. Penelitian ini dilakukan pada bulan Maret hingga Juni 2015. Variabel yang diamati meliputi produksi susu, jenis kelamin pedet, calving interval, dan lama laktasi. Data dianalisis dengan menggunakan statistik yang meliputi rerata, simpangan baku, koefisien keragaman, dan uji t independent sample t-test. Hasil penelitian menunjukkan bahwa induk yang melahirkan pedet jantan memproduksi susu dengan rata-rata 4 112.77 L per laktasi dan sapi yang melahirkan pedet betina adalah 4 096.66 L. Generasi induk memproduksi susu yang dengan rata-rata 3 784.56 L per laktasi sementara pada generasi F1 berproduksi sebanyak 3 852.50 L dan 4 071.47 L pada gernerasi F2 . Hasil uji independen sample t-test menunjukkan tidak ada pengaruh dari jenis kelamin pedet terhadap produksi susu induk. Kesimpulan diperoleh produksi susu sapi yang melahirkan pedet jantan secara rata-rata lebih tinggi dibandingkan sapi yang melahirkan pedet betina.
Keyword: Friesian Holstein, Milk Production, Sex of Calves, Cow lactation, Calving intervals, Age, Lenght of lactation, Descriptive statistics

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4