scholarly journals Performa Cacing Lumbricus rubellus terhadap Penambahan Tepung Cangkang Telur sebagai Media

2021 ◽  
Vol 9 (3) ◽  
pp. 158-162
Author(s):  
N. C. Hartono ◽  
A. M. Fuah ◽  
V. A. Mendrofa ◽  
Winarno
Keyword(s):  
Weight Gain ◽  
Culture Media ◽  
Lumbricus Rubellus ◽  
Cow Dung ◽  
Cocoon Production ◽  
Earthworm Species ◽  
Different Types ◽  
Different Levels

Lumbricus rubellus is one of earthworm species that has been cultivated because its utility as feed for livestock and fish. The culture media for earthworms are mainly manure and compost. The purpose of this research was to observe the performance of Lumbricus rubellus given eggshell powder in different types and levels. This study used commercial eggshell flour and homemade eggshell flour with different levels (10%, 20%, 30%) mixed with cow dung as a medium. The results of the study showed that the addition of eggshell flour (commercial and homemade) as much as 10% showed a higher earthworm weight gain than other treatments but the cocoon production of the treatment was lower than the control (0% eggshell flour).

scholarly journals PENGARUH JENIS FESES TERNAK BERBEDA SEBAGAI MEDIA KULTUR TERHADAP PERTAMBAHAN POPULASI CACING TANAH (Lumbricus rubellus)

2019 ◽  
Vol 34 (1) ◽  
pp. 61-68
Author(s):  
Muhammad Hasby
Keyword(s):  
Culture Media ◽  
Population Increase ◽  
Lumbricus Rubellus ◽  
Cow Dung ◽  
Climatic Data ◽  
Randomized Design ◽  
Different Types ◽  
Earthworm Population ◽  
Goat Manure ◽  
Earthworm Populations

This research aims to determine the test of the effect of different types of feces of livestock as a culture media on the increase in earthworm populations (L. rubellus). The research was conducted for 42 days starting on October 19 - November 30, 2017, at the Fish Seed Center (BBI) Faculty of Agriculture, Riau Islamic University, Pekanbaru. The method used in this study was an experimental method using a Completely Randomized Design (CRD) with five treatments and three replications. The treatments used as experiments in this study were: P0: using 100% soil, P1: using 100% buffalo feces, P2: using 100% goat manure, P3: using 100% cow dung, P4: using 25% soil + buffalo feces 25 % + goat feces 25% + cow feces 25%. Treatment experiments were carried out on earthworms (L. rubellus). The container used is 15 units of the tray (tray) with a size of 30 x 40 cm that has been filled with fecal treatment media and soil as high as 10 cm with 160 individual stocking densities. As a result, it was known that the highest increase in earthworm population is found in the treatment of P1 using 100% buffalo feces with a population increase of 7926 individuals and the lowest was in the P0 treatment using 100% of the soil where there was no increase in earthworm population (L rubellus). Analysis of variance showed that Fcount 68,01> Ftable (0,01) 9,77 were at the accuracy level of 99%, where the administration of different types of feces to the increase in earthworm populations (L. rubellus) had significantly different. Climatic data in the form of average temperature measurement ranged from 24-280C, Humidity 4-10 (moisture meter) and pH of media during the study ranged from 6,4-7.  

Comparative evaluation of epigeic earthworm species suggests better nutrient mineralization efficiency of vegetable market solid waste by Eisenia fetida

2018 ◽  
Vol 6 (6) ◽  
pp. 234-240
Author(s):  
Mukesh K. Meghvansi ◽  
Mohammad Haneef Khan ◽  
Rajeev Gupta ◽  
Vijay Veer
Keyword(s):  
Comparative Evaluation ◽  
Eisenia Fetida ◽  
C:N Ratio ◽  
Cow Dung ◽  
Total Biomass ◽  
Vegetable Waste ◽  
Cocoon Production ◽  
Earthworm Species ◽  
Nutrient Mineralization ◽  
Waste Degradation

The current study was carried out for the purpose of comparative evaluation of vegetable market waste degradation potential of three earthworm species (Eisenia fetida, Perionyx excavatus and Eudrilus eugeniae). The vegetable waste used as substrate in this study was collected from Mission Chariali vegetable market in Tezpur, Assam, India. Non-biodegradable materials such as polythenes, plastic etc. were segregated and organic waste was sun-dried. Cow dung was mixed with the substrate in 1:3 proportion and subjected to vermicomposting with three earthworms species separately. The data on physicochemical properties of the compost bed along with earthworm activity were collected every 10 days interval. The experiment was continued until 70 days. Analysis of the data indicated that E. fetida posed maximal nutrient mineralization and reduction in C:N ratio when compared with the data of day 0 with of day 70. Also, the values of vermicomposting coefficient were maximum for E. fetida. Moreover, the mean individual weight of E. fetida was also maximum during the decomposition period. Although Eu. eugeniae increased in total biomass much more rapidly than E. fetida, nevertheless, the cocoon production rate was greatest (78.67) in case of E. fetida, indicating the differential resource allocation with trade-off between sex alloca-tion and growth by Eu. eugeniae in a non-conducive environment during its life cycle. Overall, the results indicate suitability of E. fetida for vegetable waste degradation.

scholarly journals PENGARUH PENCAMPURAN KOTORAN TERNAK SEBAGAI MEDIA KULTUR TERHADAP PERTAMBAHAN POPULASI CACING TANAH (Lumbricus rubellus)

2019 ◽  
Vol 34 (1) ◽  
pp. 75-80
Author(s):  
Satria Edi Putra ◽  
Iskandar Johan ◽  
Muhammad Hasby
Keyword(s):  
Culture Medium ◽  
Culture Media ◽  
Fish Farming ◽  
Lumbricus Rubellus ◽  
Cattle Dung ◽  
Cow Dung ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Buffalo Dung ◽  
Growing Population

This research aims to determine the effect of mixing cattle dung as a culture medium to the growing population of earthworms. The research was conducted for 42 days starting from 18 October to 28 November 2017 at the fish farming school hall of Agriculture Faculty of Islamic University Riau Pekanbaru. The worm tree used in this study was as many as 960 tail or 80 tail for each container. Worms are maintained for 42 days with different mixtures of medium, i,e, 100% P1 dung treatment, P2 cow-dung treatment 50% + 50% buffalo dung, 50% cow dung + 50% goat dung, 50% cow dung + 50% chicken droppings. The research design was Completely Randomized Design with 4 treatments and 3 replications. The result of this research showed that the increase of population of earthworm with the mixing of cattle dung as culture media which conducted for 42 days is the best treatment of P2 as much as 4266 head/container, then the second one used was in treatment 3 as much as 1855 head/container, and the lowest increase of the population was at treatment P1 as much as 403 head/container, and followed by treatment P4 as much as 575 head/ container.

scholarly journals Effects of different types of manure on the culture of marine plankton as a potential source of food for mariculture hatcheries

2021 ◽  
Vol 20 (1) ◽  
pp. 81-93
Author(s):  
Fadhili M. Malesa ◽  
Margareth S. Kyewalyanga ◽  
Rose J. Masalu ◽  
Matern S. Mtolera
Keyword(s):  
Survival Rate ◽  
Growth Performance ◽  
Culture Media ◽  
Early Stage ◽  
Organic Manure ◽  
Cow Dung ◽  
Marine Plankton ◽  
Important Species ◽  
Potential Source ◽  
Different Types

The study examined different types of organic manure on the culture of marine plankton as a potential source of food for rabbitfish, Siganus stellatus, larvae. Cow dung showed significantly higher species abundance and diversity of cultured marine plankton followed by chicken and finally mixed media manure (p<0.05). A total of 36 genera of phytoplankton (21) and zooplankton (15) were identified in all culture media. Class Bacillariophyta was the most abundant and diverse group which accounted for 41.3 % of the total phytoplankton. Calanoida was the dominant group of the identified zooplankton, accounting for 51.7 %. It was observed that the organic manure used favoured the growth of commercially important species of phytoplankton such as Chaetoceros sp., Skeletonema sp., Chlorella sp., Isochrysis sp., Nannochloropsis sp. and Spirulina sp., and zooplankton such as Eurytemora sp., Calanus sp., Oithona sp., Branchionus sp., Moina sp. and ostracods. The growth performance and survival rate of early stage rabbitfish larvae fed with live marine zooplankton performed better compared to those fed with Artemia spp. and commercial dry feed. This indicates that zooplankton have the potential to enhance growth performance and survival rate, hence increasing productivity and the development of mariculture.

Seasonal activity and estivation of lumbricid earthworms in the midlands of Tasmania

Soil Research ◽  
1994 ◽  
Vol 32 (6) ◽  
pp. 1355 ◽  
Author(s):  
RB Garnsey
Keyword(s):  
Soil Moisture ◽  
Adult Development ◽  
Survival Rates ◽  
Soil Surface ◽  
Early Spring ◽  
Lumbricus Rubellus ◽  
Late Winter ◽  
Cocoon Production ◽  
Density And Biomass ◽  
Earthworm Activity

Earthworms have the ability to alleviate many soil degradational problems in Australia. An attempt to optimize this resource requires fundamental understanding of earthworm ecology. This study reports the seasonal changes in earthworm populations in the Midlands of Tasmania (<600 mm rainfall p.a.), and examines, for the first time in Australia, the behaviour and survival rates of aestivating earthworms. Earthworms were sampled from 14 permanent pastures in the Midlands from May 1992 to February 1994. Earthworm activity was significantly correlated with soil moisture; maximum earthworm activity in the surface soil was evident during the wetter months of winter and early spring, followed by aestivation in the surface and subsoils during the drier summer months. The two most abundant earthworm species found in the Midlands were Aporrectodea caliginosa (maximum of 174.8 m-2 or 55.06 g m-2) and A. trapezoides (86 m-2 or 52.03 g m-2), with low numbers of Octolasion cyaneum, Lumbricus rubellus and A. rosea. The phenology of A. caliginosa relating to rainfall contrasted with that of A. trapezoides in this study. A caliginosa was particularly dependent upon rainfall in the Midlands: population density, cocoon production and adult development of A. caliginosa were reduced as rainfall reduced from 600 to 425 mm p.a. In contrast, the density and biomass of A. trapezoides were unaffected by rainfall over the same range: cocoon production and adult development continued regardless of rainfall. The depth of earthworm aestivation during the summers of 1992-94 was similar in each year. Most individuals were in aestivation at a depth of 150-200 mm, regardless of species, soil moisture or texture. Smaller aestivating individuals were located nearer the soil surface, as was shown by an increase in mean mass of aestivating individuals with depth. There was a high mortality associated with summer aestivation of up to 60% for juvenile, and 63% for adult earthworms in 1993 in the Midlands. Cocoons did not survive during the summers of 1992 or 1994, but were recovered in 1993, possibly due to the influence of rainfall during late winter and early spring.

Accessing offshoring advantages: what and how to offshore

2015 ◽  
Vol 8 (2/3) ◽  
pp. 262-283 ◽  
Author(s):  
Alona Mykhaylenko ◽  
Ágnes Motika ◽  
Brian Vejrum Waehrens ◽  
Dmitrij Slepniov
Keyword(s):  
Performance Outcomes ◽  
Offshore Outsourcing ◽  
Strategic Decisions ◽  
Content Type ◽  
Different Types ◽  
Captive Offshoring ◽  
Performance Results ◽  
Governance Modes ◽  
Different Levels ◽  
Do So

Purpose – The purpose of this paper is to advance the understanding of factors that affect offshoring performance results. To do so, this paper focuses on the access to location-specific advantages, rather than solely on the properties of the offshoring company, its strategy or environment. Assuming that different levels of synergy may exist between particular offshoring strategic decisions (choosing offshore outsourcing or captive offshoring and the type of function) and different offshoring advantages, this work advocates that the actual fact of realization of certain offshoring advantages (getting or not getting access to them) is a more reliable predictor of offshoring success. Design/methodology/approach – A set of hypotheses derived from the extant literature is tested on the data from a quantitative survey of 1,143 Scandinavian firms. Findings – The paper demonstrates that different governance modes and types of offshored function indeed provide different levels of access to different types of location-specific offshoring advantages. This difference may help to explain the ambiguity of offshoring initiatives performance results. Research limitations/implications – Limitations of the work include using only the offshoring strategy elements and only their limited variety as factors potentially influencing access to offshoring advantages. Also, the findings are limited to Scandinavian companies. Originality/value – The paper introduces a new concept of access, which can help to more reliably predict performance outcomes of offshoring initiatives. Recommendations are also provided to practitioners dealing with offshoring initiatives.

Sticks and Stones May Break My Bones . . . Reasoning About Illness Causality and Body Functioning in Children Who Have a Chronic Illness

PEDIATRICS ◽  
1991 ◽  
Vol 88 (3) ◽  
pp. 608-619
Author(s):  
Ellen C. Perrin ◽  
Aline G. Sayer ◽  
John B. Willett
Keyword(s):  
Chronic Illness ◽  
Age Differences ◽  
Conceptual Development ◽  
Seizure Disorder ◽  
Healthy Children ◽  
Cognitive Reasoning ◽  
Different Types ◽  
Reasoning Skills ◽  
Experience Of Illness ◽  
Different Levels

Children's concepts about illness causality and bodily functioning change in a predictable way with advancing age. Differences in the understanding of these concepts in healthy children vs children with a chronic illness have not been clearly delineated. This study included 49 children with a seizure disorder, 47 children with an orthopaedic condition, and 96 healthy children, all with normal intelligence and ranging in age from 5 to 16 years. It demonstrates systematic differences in children's general reasoning skills and in their understanding of concepts about illness causality and bodily functioning, as a function of their age and experience of illness. At all ages, children who had a condition with orthopaedic involvement reported less sophisticated general reasoning and concepts about illness than did healthy children; children with a seizure disorder reported similar general reasoning skills to those of healthy children, but considerably less sophisticated concepts about illness. children's concepts about body functioning did not differ as a function of the presence of a chronic illness. When their different levels of general cognitive reasoning were statistically controlled, children with a chronic illness had somewhat more sophisticated concepts about bodily functioning than did healthy children. Differences in conceptual development among children with different types of illnesses lead to interesting speculations with regard to the effects of particular illness characteristics on children's cognitive development.

scholarly journals The Role of Sequestrene 138 in Highbush Blueberry (Vaccinium corymbosum L.) Micropropagation

HortScience ◽  
2018 ◽  
Vol 53 (10) ◽  
pp. 1487-1493 ◽  
Author(s):  
Doina Clapa ◽  
Claudiu Bunea ◽  
Orsolya Borsai ◽  
Adela Pintea ◽  
Monica Hârța ◽  
...  
Keyword(s):  
Culture Media ◽  
Iron Concentration ◽  
Vaccinium Corymbosum ◽  
Carotenoid Content ◽  
Free Medium ◽  
Axillary Shoots ◽  
Different Types ◽  
The Media ◽  
Dark Green

The current research was carried out to investigate the effects of iron source in the culture media for Vaccinium corymbosum L. ʻBluerayʼ, ʻDukeʼ, and ʻPatriotʼ cultivars grown on five different types of medium (Woody Plant Medium supplemented with 1.0 mg·L−1 zeatin and 0, 25, 50, 75, and 100 mg·L−1 Sequestrene 138). After 10 weeks of culture, seven physiological parameters were measured, such as the number and length of axillary shoots, rooting and acclimatization percentage, as well as chlorophyll (a, b, a/b) and carotenoid content of the leaves. Adding Sequestrene 138 to the culture media led to a slight decrease of the proliferation rate but increased the length of the shoots. The chlorophyll and carotenoid content in all of the three cultivars was considerably increased as the iron concentration of the media increased. The shoots developed on the Sequestrene 138–free medium were chlorotic and short, whereas at different concentrations of iron in the culture medium the shoots were dark green and vigorous, providing a greater acclimatization success than those grown in iron-free medium.

scholarly journals The Parietal Cortex in Sensemaking: The Dissociation of Multiple Types of Spatial Information

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Yanlong Sun ◽  
Hongbin Wang
Keyword(s):  
Parietal Cortex ◽  
Spatial Information ◽  
Mathematical Thinking ◽  
Hierarchical Organization ◽  
Levels Of Abstraction ◽  
Perceptual Analysis ◽  
Different Types ◽  
Sensemaking Process ◽  
Network Simulations ◽  
Different Levels

According to the data-frame theory, sensemaking is a macrocognitive process in which people try to make sense of or explain their observations by processing a number of explanatory structures called frames until the observations and frames become congruent. During the sensemaking process, the parietal cortex has been implicated in various cognitive tasks for the functions related to spatial and temporal information processing, mathematical thinking, and spatial attention. In particular, the parietal cortex plays important roles by extracting multiple representations of magnitudes at the early stages of perceptual analysis. By a series of neural network simulations, we demonstrate that the dissociation of different types of spatial information can start early with a rather similar structure (i.e., sensitivity on a common metric), but accurate representations require specific goal-directed top-down controls due to the interference in selective attention. Our results suggest that the roles of the parietal cortex rely on the hierarchical organization of multiple spatial representations and their interactions. The dissociation and interference between different types of spatial information are essentially the result of the competition at different levels of abstraction.

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