Profil dan Potensi Pejantan Sapi Peranakan Ongole Penghasil Calon Galur Baru

Peningkatan produktivitas sapi potong dapat dilakukan melalui pembentukan galur baru yang mempunyai sifat keunggulan spesifik, pengaturan perkawinan dan seleksi untuk menghasilkan sapi bibit dan pejantan unggul, serta pemberian pakan yang nilai nutriennya efisien. Tujuan penelitian ini mendapatkan profil dan potensi spesifik pejantan sapi PO di Lolitsapi sebagai penghasil calon galur baru sapi PO, khususnya terkait dengan kriteria baru, unggul, seragam dan stabil (BUSS). Sebanyak 11 ekor pejantan F3 terbaik di Lolitsapi, diamati profil fenotipe spesifiknya dan potensi produktivitasnya, sejak lahir sampai menjadi pejantan aktif pada pemberian ransum yang kandungan protein kasarnya rendah (8-11%) dan serat kasarnya tinggi (22-26%). Data disajikan secara deskriptif. Hasil penelitian menunjukkan profil pejantan calon penghasil galur baru sapi PO telah memenuhi persyaratan BUSS, potensi produksinya unggul dalam hal berat badan dan tinggi gumba sejak lahir sampai dewasa, potensi reproduksinya unggul pada libido, kuantitas dan kualitas spermanya. Disimpulkan bahwa sapi PO pejantan di Lolitsapi yang telah dipilih dan disiapkan sebagai calon tetua pembentukan galur baru sapi PO, secara silsilah dan kriteria telah memenuhi persyaratan sebagai pejantan untuk menghasilkan F4 galur baru sapi PO

Availability of Forage Under Oil Palm Plantation for Cattle Grazing

Increasing rate of oil palm plantation in Indonesia since 2008-2011 was 6.92%, that increased from 7,363,703 to 7,873,384 ha. Vegetation grown in the area of oil palm plantation is weed for its main crop. There is potential source of oil palm plantation area for livestock industry. Oil palm-cattle integration system is well known and it has been applied in many oil palm plantations, by the use of waste from oil palm plantation, oil palm by-product, the fronds for feed and feces from cattle as organic fertilizer for the plant. Management of oil palm plantation, including plant maintainance, weeding, providing organic and chemical fertilizer is costly. Grazing system under oil palm would minimize cost problem and oil palm production input can be reduced. One of the systems in oil palm-cattle integration that prospective to be developed is grazing by rotation system. Types of plants under oil palm plantation consist of grasses, legumes, other narrow and broad leaves, some are palatable and some are unpalatable or toxic for cattle. Species of vegetation under oil palm vary among the plantation depending on the age of oil palm plant. Introduction of superior forage into oil palm plantation is promising effort to increase the production and quality of feed. Carrying capacity for cattle varies among the oil palm plantation and depends on vegetation under oil palm plantation and age of oil palm. Studies showed that integration oil palm-livestock by grazing system has been proven economically feasible. Key words: Plantation, oil palm, forage, cattle, grazin

Production of carbon molecular sieves from palm shell based activated carbon by pore sizes modification with benzene for methane selective separation

Palm shell based activated carbon prepared by K2CO3 activation is used as precursor in the production of carbon molecular sieve by chemical vapor deposition (CVD) method using benzene as depositing agent. The influences of deposition temperature, time, and flow rate of benzene on pore development of carbon molecular sieve (CMS) and methane (CH4) adsorption capacity were investigated. The parameters that varied are the deposition temperature range of 600 to 1000 °C, time from 5.0 to 60 min, and benzene flow rate from 3.0 to 15 mL/min. The results show that in all cases, increasing the deposition temperature, time, and flow rate of benzene result in a decrease in adsorption capacity of N2, pore volume and pore diameter of CMS. The BET surface area of CMS (approximately 1065 m2/g) and the adsorption capacity of CH4 were at a maximum value at a deposition temperature of 800 °C, time of 20 min and benzene flow rate of 6 mL/min. The product has a good selectivity for separating CH4 from carbon dioxide (CO2), nitrogen (N2), and oxygen (O2)

Preparation and characterization of activated carbon from palm shell by chemical activation with K2CO3

Palm shell was used to prepare activated carbon using potassium carbonate (K2CO3) as activating agent. The influence of carbonization temperatures (600-1000 °C) and impregnation ratios (0.5-2.0) of the prepared activated carbon on the pore development and yield were investigated. Results showed that in all cases, increasing the carbonization temperature and impregnation ratio, the yield decreased, while the adsorption of CO2 increased, progressively. Specific surface area of activated carbon was maximum about 1170 m2/g at 800 °C with activation duration of 2 h and at an impregnation ratio of 1.0

Adsorption capacities of carbon dioxide, oxygen, nitrogen and methane on carbon molecular basket derived from polyethyleneimine impregnation on microporous palm shell activated carbon

In this study, palm shell-based activated carbon (AC) was used as precursor in the production of carbon molecular basket (CMB) via impregnation of polyethyleneimine (PEI). The effects of amount of PEI impregnated on AC on carbon dioxide (CO2), oxygen (O2), nitrogen (N2), and methane (CH4) adsorption capacities of CMB were investigated. Molecular basket was produced at PEI weight percentages of 0.06, 0.11, 0.13, 0.26, 0.27 and 0.28 wt%. Adsorption capacities of CO2, O2, N2 and CH4 were enhanced with increasing PEI impregnation from virgin AC to 0.26 wt% PEI/AC before the capacities decreased onwards for 0.28 and 0.29 wt% PEI/AC. The amount of PEI impregnation determined for optimum uptake of gas adsorption was 0.26 wt% PEI/AC. The maximum adsorption capacity for the gases follows the sequence: CO2 ≫ CH4 > O2 > N2 for all the CMB samples