Aktivitas Ekstrak Etanolik Daun Jambu Mete Terhadap Otot Pectoralis Thoracicus Ayam Jawa Super

Daun jambu mete memiliki senyawa bioaktif alami yang berpotensi sebagai promotor pertumbuhan ternak. Penelitian ini bertujuan untuk mempelajari efek suplementasi ekstrak etanol daun jambu mete dalam pakan terhadap peningkatan berat badan dan otot pectoralis thoracicus ayam jawa super. Penelitian ini menggunakan 90ekorday old chick (DOC)ayamjawasuper yangdipeliharaselama 15 hari. Penelitian menggunakan rancangan acak lengkap dengan perlakuan penambahan ekstrak etanol daun jambu mete pada pakan basal sebanyak 0 g/kg pakan (K); 1,25 g/kg pakan (P1); 2,5 g/kg pakan (P2); 5 g/kg pakan (P3); 10 g/kg pakan (P4); 20 g/kg pakan (P5). Metode terdiri dari pembuatan ekstrak etanolik daun jambu mete, pembuatan pakan, pemeliharaan ayam dan pembuatan preparat jaringan otot (metode parafin). Parameter pengamatan otot terdiri dari pengukuran berat otot dan luas area miofiber. Hasil menunjukkan terdapat peningkatan berat badan pada P3, P4 dan P5 dibandingkan dengan kontrol (P<0,05). Berat otot pada P5 lebih tinggi dibandingkan dengan kontrol (P<0,05). Luas area miofiber otot pada P3 memiliki luas yang paling lebar dibandingkan dengan kontrol (P<0,05). Kesimpulan menunjukan bahwa suplementasi ekstrak etanol daun jambu mete pada pakan dapat meningkatkan berat badan dan otot pectoralis ayam jawa super

Screening of suitable cationic dopants for solar absorber material CZTS/Se: A first principles study

The earth abundant and non-toxic solar absorber material kesterite Cu2ZnSn(S/Se)(4) has been studied to achieve high power conversion efficiency beyond various limitations, such as secondary phases, antisite defects, band gap adjustment and microstructure. To alleviate these hurdles, we employed screening based approach to find suitable cationic dopant that can promote the current density and the theoretical maximum upper limit of the energy conversion efficiency (P(%)) of CZTS/Se solar devices. For this task, the hybrid functional (Heyd, Scuseria and Ernzerhof, HSE06) were used to study the electronic and optical properties of cation (Al, Sb, Ga, Ba) doped CZTS/Se. Our in-depth investigation reveals that the Sb atom is suitable dopant of CZTS/CZTSe and also it has comparable bulk modulus as of pure material. The optical absorption coefficient of Sb doped CZTS/Se is considerably larger than the pure materials because of easy formation of visible range exciton due to the presence of defect state below the Fermi level, which leads to an increase in the current density and P(%). Our results demonstrate that the lower formation energy, preferable energy gap and excellent optical absorption of the Sb doped CZTS/Se make it potential component for relatively high efficient solar cells

Keanekaragaman Jenis Burung di Taman Nasional Betung Kerihun Kabupaten Kapuas Hulu, Provinsi Kalimantan Barat

This observation objection to cover bird diversity in Sibau Watershed, Betung Kerihun National Park (BKNP). The observation was done in along river (Sibau Rill, Sibau River, Apyang River, Menyakan River) and hill (Menyakan Hulu Hill and Apyang Hill) and point at transect. That habitat is riverine. Amount of bird was found are 93 species from 31 family with 39 species new record for Sibau Watershed. The large abundance is Edible-nest Swiftlet (Collocalia fuciphaga), and than folowwed by Asian Palm-swift (Cypsiurus balasiensis) and Whiskered Treeswift (Hemiprocne comata). The total individu was found is 660 individu with vaule of diversity index is 3.7618 and evennes index is 0.8299. The five bird species is endemic to the Borneo, one species is Appendix I CITES, 13 species is Appendix II CITES, 26 species is protected, and five species is treathened

Author Correction: Long-term carbon sink in Borneo's forests halted by drought and vulnerable to edges

The original version of this Article contained an error in the third sentence of the abstract and incorrectly read "Here, using long-term plot monitoring records of up to half a century, we find that intact forests in Borneo gained 0.43 Mg C ha-1 year-1 (95% CI 0.14-0.72, mean period 1988-2010) above-ground live biomass", rather than the correct "Here, using long-term plot monitoring records of up to half a century, we find that intact forests in Borneo gained 0.43 Mg C ha-1 year-1 (95% CI 0.14-0.72, mean period 1988-2010) in above-ground live biomass carbon". This has now been corrected in both the PDF and HTML versions of the Article

Author Correction: Long-term carbon sink in Borneo's forests halted by drought and vulnerable to edges

The original version of this Article contained an error in the third sentence of the abstract and incorrectly read "Here, using long-term plot monitoring records of up to half a century, we find that intact forests in Borneo gained 0.43 Mg C ha-1 year-1 (95% CI 0.14-0.72, mean period 1988-2010) above-ground live biomass", rather than the correct "Here, using long-term plot monitoring records of up to half a century, we find that intact forests in Borneo gained 0.43 Mg C ha-1 year-1 (95% CI 0.14-0.72, mean period 1988-2010) in above-ground live biomass carbon". This has now been corrected in both the PDF and HTML versions of the Article

Histological study on the pancreatic β-cell number of indigenous chicks in first crossbred (F1)

The objective of this study was to evaluate the total pancreatic β-cell number of chicks in first crossbred (F1) with potential as broiler. The total number of twenty day-old male chicks consisted of DOCs Cobb 500 broiler line as a control group and those of Pelung and the crossbred of Pelung and Cemani chicks with the average body weight of 30 gram as materials. They were divided into four groups, in which each group has 5 male DOCs. Group 1 was DOCs from parent of Cobb 500 broiler as the control; Group 2 was DOCs from parent of Pelung; Group 3 was crossbred DOCs from male parent Cemani line and female parent Pelung line; and Group 4 was crossbred DOCs taken from male parent of Pelung and female parent of Cemani. Chick body weight of each group was measured at 7th week. Histological process was carried out on five DOCs of each group previously raised until seven weeks old and at the end of experiment all chicks were euthanized for pancreatic organs, particularly tissue samples of pancreas, made as histological preparates. Data from the histological probe on total pancreatic β-cell number was statistically analyzed using the ANOVA of One Way Classification, and then followed by the LSD-test. Result of the study showed that average body weights of DOCs in the control group of Cobb 500 (2770±58.31) significantly higher (P<0.05) compared to the groups of 2, 3, and 4 (652.4±32.77, 570.4±14.45, and 628±37.2 g, respectively). Total pancreatic β-cell number in the control group of Cobb 500 broiler chicks (2.76×106±0.20×106) significantly higher compared to the groups of 2, 3, and 4 (1.93×106±0.34×106, 1.64×106±0.30×106, and 1.71×106±0.19×106, respectively). The results of this study revealed that total pancreatic β-cell number can be used as an indicator of the growth and development of chick

Growth performance, morphometric of the small intestine, lymphoid organ, and ovary of laying hens supplemented with Dates (Phoenix dactylifera L.) extract in drinking water

Background and Aim: Antibiotic, improves the growth performance of laying hens when used as a feed additive; however, it has been banned in Europe. Furthermore, secondary metabolites used as a substitute for antibiotics are compounds produced by plants. Therefore, this aims to determine the effect of dates water extract (DWE) on the performance of laying hens. This study used dates containing secondary metabolites as a feed additive and substitute for antibiotics. Materials and Methods: A completely randomized design was used, dividing 400 Lohmann brown day old chick into five groups (each group has five replications and each replication consisted of 16 laying hens). Furthermore, there were two control groups such as mineral water control group and antibiotic growth promoters (basal feed+50 mg/kg of bacitracin), and three DWE groups such as 5% DWE (50 mg/mL), 10% DWE (100 mg/mL), and 20% DWE (200 mg/mL). Dates extract treatment was administered through drinking water for 54 days, whereby three laying hens from each replication were taken randomly and decapitated on the neck. Afterwards, a necropsy was performed for histological preparations of the small intestine, ovary, and lymphoid organs. The structure and morphology of the small intestine, and ovaries were observed through histological preparations, while lymphoid organs were observed through histological preparation and morphometry, and body morphometry, body weight, feed intake and weight gain were observed by measurements and weighing. Results: Small intestine morphology, ovarian follicle, and growth performance of the DWE2 group increased significantly compared to the control group, but the lymphoid organs index was influenced by DWE1. Conclusion: The administration of 10% dates extract (100 mg/mL) in drinking water improves the morphology of the small intestine, ovarian follicles, lymphoid organs, and growth performance

Kancilan Flores (Pachycephala Nudigula Nudigula): The Iconic Bird Of Kelimutu National Park, Indonesia

Kancilan Flores (Pachycephala nudigula nudigula) is an iconic bird of Kelimutu National Park. The bird has a unique characteristic with the ability to make a wide variety of song. The local people call this bird 'Garugiwa' and also 'burung arwah' or 'spirit bird' because it is small and hard to spot but has a loud chirp. Some literature mentions this bird with different scientific names. This study aimed to identify this bird to rectify this misnaming scientifically and to observes Kancilan Flores behavior, habitat, and population. Kancilan Flores is an attractive fauna for tourists. Therefore, this study also recommended potential birdwatching locations for Kancilan Flores. This study used a transect line and direct observation methods. The results showed that the estimated population size of Kancilan Flores in the Kelimutu National Park was 1,667 individuals with a population size range of 1,245–2,089 individuals. The population density of Kancilan Flores was estimated at 0.53 individuals per hectare. The Kancilan Flores is most commonly found at an altitude of 1,500–1,600 m a.s.l. Recommended areas as bird watching locations for Kancilan Flores, namely the Edelweiss Garden, Perekonde, the lower Arboretum, and the Kancilan Flores middle Arboretum. Therefore, it is necessary to protect the population of Kancilan Flores by strictly prohibiting hunting and destruction of their habitat