scholarly journals Contributions at Capitalization Study on Chemical Content from Mulberry Tree Leave by Bombyx Mori Larvae

2019 ◽  
Vol 70 (10) ◽  
pp. 3681-3686
Author(s):  
Marius Gheorghe Dolis ◽  
Radu Adrian Moraru ◽  
Cristina Simeanu ◽  
Ion Sandu ◽  
Dan Bodescu ◽  
...  
Keyword(s):  
Bombyx Mori ◽  
Growth Period ◽  
Metabolic Energy ◽  
Mulberry Leaves ◽  
Mulberry Leaf ◽  
A Value ◽  
Chemical Content ◽  
Aging Phenomenon ◽  
Summer Growth ◽  
Mulberry Tree

In order to assess how efficient is the use of mulberry leaf by the Bombyx mori Baneasa Super larvae hybrid, some determinations were made regarding the nutritional value and digestibility of the worm leaf administered as food, during a series of summer growth. The results showed that ongoing vegetation and growth process of this hybrid, the Mulberry leaves suffer an aging phenomenon, revealed by diminishing its chemical composition quality. According to this, most of the nutritional substances from mulberry leaves, except cellulose, manifest a continuous decline during the growth period. The digestibility of these nutritional components registered a value of 56.41%, the crude energy value was 4209 kcal/kg dry substance, and digestive energy was 2173 kcal/kg (DS), while the metabolic energy was 2044-2007 kcal/kg (DS). The efficiency of converting ingestion into silk had a value of 9.30% and the digestion was 15.76%.

scholarly journals Contributions at Capitalization Study on Chemical Content from Mulberry Tree Leave by Bombyx Mori Larvae

2019 ◽  
Vol 70 (10) ◽  
pp. 3681-3686
Keyword(s):  
Bombyx Mori ◽  
Energy Use ◽  
Growth Period ◽  
Metabolic Energy ◽  
Mulberry Leaves ◽  
Mulberry Leaf ◽  
A Value ◽  
Chemical Content ◽  
Aging Phenomenon ◽  
Summer Growth

In order to assess how efficient is the use of mulberry leaf by the Bombyx mori Baneasa Super larvae hybrid, some determinations were made regarding the nutritional value and digestibility of the worm leaf administered as food, during a series of summer growth. The results showed that ongoing vegetation and growth process of this hybrid, the Mulberry leaves suffer an aging phenomenon, revealed by diminishing its chemical composition quality. According to this, most of the nutritional substances from mulberry leaves, except cellulose, manifest a continuous decline during the growth period. The digestibility of these nutritional components registered a value of 56.41%, the crude energy value was 4209 kcal/kg dry substance, and digestive energy was 2173 kcal/kg (DS), while the metabolic energy was 2044-2007 kcal/kg (DS). The efficiency of converting ingestion into silk had a value of 9.30% and the digestion was 15.76%. Keywords: leaves, mulberry, larvae, energy, use

Research on Digestibility of the Mulberry Leaf from the Kokuso 21 Variety in Relation to the Dynamics of the Chemical Content

2018 ◽  
Vol 69 (2) ◽  
pp. 439-444
Author(s):  
Marius Gheorghe Dolis ◽  
Paul Corneliu Boisteanu ◽  
Marius Giorgi Usturoi ◽  
Daniel Simeanu ◽  
Dan Bodescu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Larval Growth ◽  
Growth Period ◽  
Point Of View ◽  
Silkworm Larvae ◽  
Mulberry Leaves ◽  
Mulberry Leaf ◽  
A Value ◽  
Chemical Content ◽  
Chemical Determination

During the growth of silkworm larvae study, also was done a research which aimed to determine the chemical composition and the digestibility of mulberry leaves from a Japanese variety, Kokuso 21. The results showed that advancing in the vegetation stage at the same time with different periods of the silkworm larvae�s growth, the mulberry leaves experience an aging process being noticed through its quality decreasing from chemical composition point of view. Accordingly, with this, to the majority of nutrients from mulberry leaves, except the crude fiber was noticed a continuous digestibility decreasing throughout larval growth period So, for example, digestibility of crude protein decreased gradually throughout the studied period, with 27.11%, respectively from 84.42% at the first chemical determination to 61.53% at the last one. The nutrients digestibility from the leaves registered in average a value of 55.87%.

Research Regarding Apparent Digestibility of Selected Hybrid Mulberry Leaf Chemical Content

2017 ◽  
Vol 68 (6) ◽  
pp. 1361-1366
Author(s):  
Marius Gheorghe Dolis ◽  
Paul Corneliu Boisteanu ◽  
Daniel Simeanu
Keyword(s):  
Chemical Composition ◽  
Larval Growth ◽  
Growth Period ◽  
Point Of View ◽  
Silkworm Larvae ◽  
Mulberry Leaves ◽  
Mulberry Leaf ◽  
A Value ◽  
Chemical Content ◽  
Composition Point

During the growth of silkworm larvae study, also was done a research which aimed to determine the chemical composition and the digestibility of mulberry leaves from a Romanian Selected Hybrid. The results showed that advancing in the vegetation stage at the same time with different periods of the silkworm larvae�s growth, the mulberry leaves experience an aging process being noticed through its quality decreasing from chemical composition point of view. So, for example, the CP which was in average 20.78�0.627% (from DM), decreased during the study with 2.87%; while the CF had an average of 18.10�0.271%, (from DM) increased with 1.47%. Accordingly with this, to the majority of nutrients from mulberry leaves, except the crude fiber was noticed a continuous digestibility decreasing throughout larval growth period. The nutrients digestibility from the leaves registered a value of 58.45%.

Seasonal changes in the energy and nitrogen intake in reindeer and caribou

1970 ◽  
Vol 48 (5) ◽  
pp. 905-913 ◽  
Author(s):  
E. H. McEwan ◽  
P. E. Whitehead
Keyword(s):  
Body Weight ◽  
Heat Production ◽  
Energy Requirement ◽  
Caloric Intake ◽  
Growth Period ◽  
Metabolizable Energy ◽  
A Value ◽  
Cyclical Pattern ◽  
Summer Growth ◽  
Cattle And Sheep

The relation between energy intake and body weight of reindeer and caribou are summarized. The results indicate that caloric intake was 35–45% lower in winter than during the summer growth period. The relation between heat production and body weight also exhibited a cyclical pattern. Heat production per unit of metabolic weight decreased by 25% (mid-August to mid-November). From calorimetry studies, the relative proportions of protein and fat deposition from weaning to 12 months of age were estimated. The amount of digestible nitrogen required for N equilibrium amounted to 0.462 g N/W0.75 per day, a value comparable to those reported for cattle and sheep. The estimated metabolizable energy requirement for maintenance of a 70-kg reindeer in winter amounted to 5.5 Mcal/day, or about 200 kcal/W0.75perday.

Research Regarding Chemical Composition and the Digestibility of the Mulberry Leaves from Eforie Variety

2017 ◽  
Vol 68 (1) ◽  
pp. 151-156
Author(s):  
Marius Gheorghe Dolis ◽  
Cristina Simeanu ◽  
Alexandru Usturoi ◽  
Daniel Simeanu
Keyword(s):  
Chemical Composition ◽  
Aging Process ◽  
Growth Period ◽  
Point Of View ◽  
Silkworm Larvae ◽  
Mulberry Leaves ◽  
A Value ◽  
Composition Point ◽  
Vegetation Stage ◽  
Nutrients Digestibility

During the growth of silkworm larvae study, also was done a research which aimed to determine the chemical composition and the digestibility of mulberry leaves from a Romanian variety, Eforie. The results showed that advancing in the vegetation stage at the same time with different periods of the silkworm larvae�s growth, the mulberry leaves experience an aging process being noticed through its quality decreasing from chemical composition point of view. So, for example, the CP which was in average 20.98�0.670% (from DM), decreased during the study with 3.11%; while the CF had an average of 17.91�0.434%, (from DM) increased with 2.29%. Accordingly, with this, the majority of nutrients from mulberry leaves, excepting cellulose, had an increasing of digestibility with 33.94%. It was noticed a continuous digestibility decreasing during the growth period for the CP with 22.79% and with 33.53% for NFE. The nutrients digestibility from the leaves registered a value of 59.20%.

scholarly journals Flavonoid Levels and Antioxidant Capacity of Mulberry Leaves: Effects of Growth Period and Drying Methods

2021 ◽  
Vol 12 ◽  
Author(s):  
Lei Hu ◽  
Cheng Wang ◽  
Xiang Guo ◽  
Dekui Chen ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Freeze Drying ◽  
Growth Period ◽  
Operating Costs ◽  
Drying Methods ◽  
Flavonoid Content ◽  
Air Drying ◽  
Mulberry Leaves ◽  
Mulberry Leaf

In recent years, various mulberry leaf dishes have gradually gained in popularity. The harvesting period of mulberry leaves and the preparation of dried samples are critical for the retention of flavonoid content and activity. In this study, changes in flavonoid levels in mulberry leaves during their growth period (3–6 months), and the effects of four different drying methods [sun drying (SD), air drying (AD), oven drying (OD), and freeze drying (FD)] on flavonoid accumulation and antioxidant capacity were determined. The results showed that mulberry leaves grown for 6 months had higher levels of flavonoids, and different drying methods could significantly affect the flavonoid levels and antioxidant capacity of the leaves. Air drying and FD were the best methods in terms of retaining the antioxidant activity of flavonoids, although AD had lower operating costs than FD in the production process. Therefore, to obtain a high flavonoid content and maximum antioxidant activity, AD is recommended for mulberry leaves.

scholarly journals Effect of Antibiotics on the Haemocyte Count and Rearing Performance of Silkworm Bombyx mori L.

2020 ◽  
pp. 528-538
Author(s):  
Iqra Rafiq ◽  
Z. I. Buhroo ◽  
K. A. Sahaf ◽  
N. A. Ganie ◽  
M. F. Baqual ◽  
...  
Keyword(s):  
Bombyx Mori ◽  
Economic Traits ◽  
Silkworm Larvae ◽  
Mulberry Leaves ◽  
Survival Percentage ◽  
Bombyx Mori L ◽  
Ceftiofur Sodium ◽  
Antibiotic Agents ◽  
Silkworm Bombyx Mori ◽  
Total Haemocyte Count

Background: Antibiotic agents have been used in recent years to increase the growth of silkworm larvae and to improve production. In this context, the present investigation reported the effects of ceftiofur sodium, oxytetracycline and enroflaxcin on total haemocyte count (cells/mm3), survival percentage and economic characteristics in silkworm Bombyx mori L. at various concentration levels. The study regarding the effect of antibiotics was conducted on the silkworm breed APS-45. Three concentrations (0.05%, 0.10% and 0.15%) were prepared for each antibiotic. The worms were reared upto 3rd instar without any treatment. After third moult silkworms were supplemented with antibiotic fortified mulberry leaves. Results: The experimental results showed that the effect of different antibiotics on economic parameters like larval weight, larval duration, cocoon weight, shell ratio and raw silk percentage were significantly increased in the treated lines in comparison to the control. Antibiotics also increased survival percentage and the most effective result was obtained at 0.15% of ceftiofur sodium followed by oxytetracycline and enroflaxcin. In the present study highest THC value of 9157.33 mm/cm3 was recorded in treatment ceftiofur sodium treated batch at concentration C3 0.15%. An increment in the total haemocyte count was observed in other treatments as well and the cell count increased with an increase in concentration of antibiotic dosage and the effectiveness of the antibiotics followed the order ceftiofur sodium, oxytetracycline and enroflaxcin. Conclusion: This research outlines that there is a significant improvement in the total haemocyte count and economic traits in silkworm with the supplementation of antibiotic fortified mulberry leaves. The antibiotic treatment has significantly improved the raw silk percentage and has been found to be effective in reducing the mortality of silkworms. So, this antibiotic fortification can be further exploited for higher raw silk production.

scholarly journals URBAN ENVIRONMENTAL QUALITY ASSESSMENT BY SHAPE AND SPECTRAL INDICES OF MULBERRY LEAVES

2019 ◽  
Vol 7 (3) ◽  
pp. 184-205
Author(s):  
Snejana Dineva ◽  
Zlatin Zlatev
Keyword(s):  
Quality Assessment ◽  
Environmental Quality ◽  
Principal Components ◽  
Latent Variables ◽  
Support Vector ◽  
Mulberry Leaves ◽  
Environmental Quality Assessment ◽  
Mulberry Leaf ◽  
Vector Machines ◽  
Potential Use

In this paper, an analysis of the potential use of the surface and geometric characteristics of mulberry leaves as parameters for environmental quality assessment is made. Methods have been used to reduce the amount of data of latent variables, linear and kernel variants of principal components. It has been found that a kernel variant of the principal components, combined with nonlinear separating functions of discriminant analysis and a method of support vector machines, are an appropriate methods for distinguishing the degree of air pollution from the mulberry leaf data. The results obtained could be used as preliminary baseline data for future evaluations and studies related to remote monitoring of urban air quality.

Summer–winter transitions in Antarctic ponds I: The physical environment

2011 ◽  
Vol 23 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Ian Hawes ◽  
Karl Safi ◽  
Brian Sorrell ◽  
Jenny Webster-Brown ◽  
David Arscott
Keyword(s):  
Physical Environment ◽  
Average Rate ◽  
Growth Period ◽  
Ice Formation ◽  
Freezing Process ◽  
Ice Thickness ◽  
Ice Shelf ◽  
Continental Antarctica ◽  
The Antarctic ◽  
Summer Growth

AbstractMeltwater ponds are one of the most widespread aquatic habitats in ice-free areas of continental Antarctica. While most studies of such systems occur during the Antarctic summer, here we report on ice formation and water column attributes in four meltwater ponds on the McMurdo Ice Shelf during autumn, when they went from ice-free to > 80 cm thickness of ice. Ice thickness grew at an average rate of 1.5 cm d-1 in all ponds and as ice formed, salts and gases were excluded. This resulted in conductivity rising from 3–5 to > 60 mS cm-1 and contributed to the ebullition of gases. Incorporation of gas bubbles in the ice resulted in a high albedo and under-ice irradiance declined faster than incident, the former falling below 1 W m-2 (daily average) by early April. After two months of ice formation, only 0–15% of the volume of each pond was still liquid, although this represented 5–35% of the pond sediment area, where much of the biological activity was concentrated. We suggest that the stresses that the freezing process imposes may be as important to structuring the biotic communities as those during the more benign summer growth period.

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