Profil dan Keragaman Ayam Kub yang Dipelihara Oleh RTM Peternak dalam Program Bekerja di Kabupaten Indramayu

The aim of this study was to determine the diversity of KUB chickens raised by farmer households in Indramayu Regency in the implementation of the 2019 BEKERJA program. The BEKERJA program is carried out in 8.189 farmer households by providing 50 DOC, chicken feed during 5 weeks, maintenance support facilities include feed tray, drinking bottles, brooder cages, cables, lights, and cage subsidy for 4 weeks chickens. The parameters observed were the number of chicken mortality, age of first egg laying and the number of egg production for the first time. The observations showed that the mortality of KUB chickens increased at 3 months of raised, which was caused by the sale and slaughter of chickens and the mortality of chickens due to improper raise management. Hens that lay eggs early in the District of Anjatan and District of Bongas 7.066 and 1.041, respectively. The results of the study showed that there was diversity at the beginning of egg-laying chicken due to improper feeding management, but KUB chicken had the potential to be developed as an egg and meat producer in Indramayu Regency. Keywords: BEKERJA Program; Diversity at the beginning of egg-laying chicken; KUB chicken Abstrak Kajian bertujuan untuk mengetahui keragaman ayam KUB yang dipelihara oleh RTM di Kabupaten Indramayu dalam pelaksanaan program BEKERJA tahun 2019. Program BEKERJA melibatkan 8.189 RTM dengan memberikan bantuan 50 ekor DOC ayam KUB, pakan selama 5 minggu pemeliharaan, bantuan sarana prasarana pemeliharaan meliputi tray tempat pakan, botol tempat minum, kandang brooder, kabel, lampu, dan bantuan subsidi kandang untuk ayam umur 4 minggu. Parameter yang diamati adalah jumlah kematian ayam, umur bertelur pertama kali dan produksi telur pertama kali. Hasil pengamatan menunjukkan bahwa kematian ayam KUB meningkat pada 3 bulan usia pemeliharaan, yang disebabkan oleh penjualan dan pemotongan ayam serta kematian akibat manajemen pemeliharaan yang kurang tepat. Jumlah produksi telur pertama kali di Kecamatan Anjatan dan Kecamatan Bongas masing-masing sebesar 7.066 butir dan 1.041 butir. Hasil kajian menunjukkan adanya keragaman pada awal bertelur ayam yang diakibatkan oleh manajemen pemberian pakan yang tidak tepat, namun ayam KUB berpotensi dikembangkan sebagai penghasil telur dan daging di kabupaten Indramayu Kata kunci : Ayam KUB; Keragaman awal bertelur; Program BEKERJA

Domestic cats (Felis catus) prefer freely available food over food that requires effort

Contrafreeloading is the willingness of animals to work for food when equivalent food is freely available. This behavior is observed in laboratory, domesticated, and captive animals. However, previous research found that six laboratory cats failed to contrafreeload. We hypothesized that cats would contrafreeload in the home environment when given a choice between a food puzzle and a tray of similar size and shape. We also hypothesized that more active cats would be more likely to contrafreeload. We assessed the behavior of 17 neutered, indoor domestic cats (Felis catus) when presented with both a food puzzle and a tray across ten 30-min trials. Each cat wore an activity tracker, and all sessions were video recorded. Cats ate more food from the free feed tray than the puzzle (t (16) = 6.77, p < 0.001). Cats made more first choices to approach and eat from the tray. There was no relationship between activity and contrafreeloading, and there was no effect of sex, age, or previous food puzzle experience on contrafreeloading. Our results suggest that cats do not show strong tendencies to contrafreeload in the home environment, although some cats (N = 4) ate most food offered in the puzzle or showed weak contrafreeloading tendencies (N = 5). Eight cats did not contrafreeload. Cats who consumed more food from the puzzle, consumed more food in general, suggesting a relationship between hunger and effort. Further research is required to understand why domestic cats, unlike other tested species, do not show a strong preference to work for food.

OPTIMIZATION OF RECTIFICATION PROCESS USING MOBILE CONTROL ACTION WITH ACCOUNT FOR CRITERION OF MAXIMIZING SEPARATION QUALITY

The use of mobile control action allows the improvement of technical-economical characteristics of the rectification process and allows for operation regimes that can’t be achieved with traditional control approaches. Mobility lies in the ability to choose the movement law of compound source and energy in the spatial region of apparatus. Mobile control over the rectification process can be realized by changing the column feed point. An optimal number of feed trays must be determined with consideration of cost and output performance, and also the quality of the target product. The work aimed to develop a method for calculating optimal control action, including mobile ones, on the rectification process with additional account for the criterion of maximizing quality of target product, and also, comparison of static column profiles that are optimal by different criteria. Mathematical modeling of the rectification column for separation of water-methanol mixture revealed that increasing quality requirements to target products decreases the number of the optimal feed tray. A method was described for process optimization by the normalized criterion that accounts for separation quality and power consumption. The method was used to determine optimal values of traditional (flows of heat into the column's cube and phlegm) and mobile (feed tray number) control actions that provide the best technical-economical parameters of the rectification column. A proof is presented for the existence and uniqueness of solutions for this optimization problem and the effectiveness of using mobile actions for different requirements to target. The optimal temperature profile of the culms was studied and their characteristic features that correspond to different specific and normalized optimization criteria were found

Sensitivity analysis and optimization of the utility consumption of natural gas liquids (NGLs) process in the Siri Island Gas

In this study, the simulation of the natural gas liquids (NGLs) of Siri Island unit was carried out using Aspen Hysys software. Energy and economic evaluation of these towers were evaluated with Aspen Energy Analyses and Aspen Economic Evaluation, respectively. The effect of various parameters such as the use of heat exchanger instead of a cooler, feed tray changes and the mixing of two feed streams together were investigated to increase the efficiency of hydrocarbons - (Ethane, Propane, Butane, and Pentane) separation, utility consumption and costs. The simulation results showed that the input feed stream from the 10-tray using - mixing of two input 207 and 208 streams, which improves the efficiency of hydrocarbons gas separation and utility consumption compared to other parameters.

PENGARUH RANSUM YANG MENGANDUNG LIMBAH TAUGE FERMENTASI TERHADAP KECERNAAN SERAT KASAR, PROTEIN KASAR DAN ENERGI METABOLIS PADA ITIK LOKAL FASE STARTER

This research aimed to reviewing level of bean sprout fermented used in duck diet against crude fiber digestibility, crude protein digestibility and metabolic energy of diet. The research was proccessed using Complete Random Design (CRD) with four treatments and four replications. The parameters observed were crude fiber digestibility, crude protein digestibility and metabolic energy. The research material used was 48 male ducks with starter phase, treatment diet, flock cage, battery cage, feed tray, water tube, HCl, plasctic tray, scales, hygrometer, a set of proximate and gross energy analysis equipment. The research method consits two stages, the first stage was fermented of bean sprouts using 6% of Trichoderma harzianum for six days. The second phase was in vivo method with addition of bean sprout fermented in diet respectively T0 0%, T1 5%, T2 10% and T3 15%. The result data was tested by F test based on analysis of varians and if there was significant effect of treatment (P<0.05) followed by the test of least significance defferent (LSD). The result of effect of diet containing bean sprouts fermented were no affected (P>0.05) the crude fiber digestibility, crude protein digestibility and metabolic energy for starter phase of local ducks. Keywords : Bean Sprouts, Digestibility, Duck, Fermentation, Tricodherma harzianum.

Study on the Refinement of Phenetole

In this work,technological process of the refinement of phenetole by continuous distillation method is introduced and, the effects of reflux ratio, operating pressure and location of feed tray on the distillation process are analyzed. The optimal operating conditions for refining phenetole in laboratory are: operating pressure is 50Kpa, feed tray location is the 35th theoretical plate, total reflux and product outlet location is the 5th plate. The phenetole of high-purity could be obtained with both water and phenol content under 100ppm.