Judul: Performa Reproduksi pada Induk Babi di PT Maharkata Farm Sukses Kabupaten Karo Provinsi Sumatera Utara
Abstrak: Reproductive performance needs special attention from farmers, in order to increase litter size number. This research aim to study the reproductive performance of sows. Sixty sows (40 heads secondary and 20 heads were primer data randomly used as a sample) belong to PT Maharkata Farm Sukses. The reproductive performance evaluate were age at first mating, litter size and interval between birth (calving interval) parity and birth weight. The result showed that there were no significantly different on the age of the first mating, number of litter size as well as calving interval of landrace and yorkshire landrace cross breed. The age of first mating were between 237.44±33.82 and 239.95±27.03 days. The litter size between 8.72±2.59 and 7.89±2.37 piglet respectively. The calving interval were 151.06±6.30 and 157.68±20.14 days. The result was also found that there were no difference between number of parity with litter size as well as litter size with birth weight.
Keyword: birth weight., parity, age at first mating, litter size, reproductive performance

Judul: Studi Tentang Performans Beberapa Bangsa Ternak Babi Impor Dari New Zealand di Merek Kabuapten Karo Sumatera Utara
Abstrak: Penelitian ini dilakukan di Proyek Pengembangan Usaha Peternakan Merek, Kabupaten Karo, Sumatera Utara selama dua bulan yaitu sejak tanggal 12 Februari 1988 sampai 12 April 1988. Tujuan penelitian ini adalah untuk mengetahui performans reproduksi babi mana yang paling baik dan sesuai dengan keadaan di Merek serta untuk melihat apakah ada pengaruh bangsa dan kelahiran terhadap performans reproduksi ternak babi yang dilihat melalui beberapa sifat seperti jumlah serta berat anak seperindukan pada waktu lahir dan disapih dan tingkat kematian sejak lahir data primer dan hingga disapih. Data yang diambil ada dua bentuk yaitu sekunder. Dalam studi ini data yang digunakan tidak sama jumlahnya yaitu pada babi Landrace 25 ekor, Yorkshire 21 ekor, Duroc 38 ekor serta babi Hampshire 38 ekor, sehingga untuk mengatasi hal ini digunakan prosedur General Linear Model (GLM) serta uji rataan yang digunakan adalah uji jarak Duncan pada taraf lima persen. Hasil penelitian menunjukkan bahwa bangsa babi memperlihatkan pengaruh yang tidak nyata terhadap jumlah anak seperindukan pada waktu lahir, dimana jumlah rataannya pada babi Yorkshire, Duroc, Hampshire dan Landrace masing-masing adalah 8.48, 7.13, 6.67 dan 8.84 ekor. Berat anak seperindukan. Berat anak seperindukan babi Landrace, Yorkshire, Duroc dan Hampshire pada waktu lahir masing-masing adalah 12.03, 11.33, 9.76 dan 8.98 kg, dimana bangsa babi berpengaruh nyata (P0.05) terhadap berat anak seperindukan pada waktu lahir. Rataan berat lahir babi Landrace, Yorkshire, Duroc dan Hampshire masing-masing adalah 1.47, 1.37, 1.34 dan 1.34 kg. Bangsa dan kelahiran tidak berpengaruh nyata terhadap berat lahir anak babi, demikian juga terhadap berat sapihnya, yang pada babi Duroc, Landrace, Yorkshire dan Hampshire rataannya masing-masing adalah 9.19 9.07 9.02 dan 8.89 kg.
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell