Effects of Minerals on Growth of Silkworm, Bombyx mori L. and Their Impact on Cocoon Economic Parameters

The present study aimed at increasing the cocoon yield by fortifying the mulberry leaves with minerals such as zinc sulphate, magnesium sulphate and potassium chloride at different concentrations (10, 25, 50, 100 and 200 ppm) and feeding them to the silkworm Bombyx mori L. The oral application of minerals through mulberry leaves to silkworm larva during lateage instars significantly improved its larval and cocoon economic parameters. Among the five concentrations tested, it was observed that the zinc sulphate @ 100 ppm, magnesium sulphate @ 200 ppm and potassium chloride @ 100 ppm registered significantly higher mature larval weight, effective rate of rearing (ERR), cocoon weight, pupal weight, shell weight and shell ratio than the control. Per os administration of minerals also significantly reduced the fifth instar larval duration of silkworm.

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

Current Journal of Applied Science and Technology ◽

10.9734/cjast/2020/v39i4831274 ◽

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.

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Influence of Supplementation of Zea Mays Flour on the Growth and Economic Traits of Silkworm, Bombyx Mori L.(PFD)

IRA-International Journal of Applied Sciences (ISSN 2455-4499) ◽

10.21013/jas.v3.n3.p17 ◽

2016 ◽

Vol 3 (3) ◽

Author(s):

Shifa Vanmathi. J

Keyword(s):

Zea Mays ◽

Bombyx Mori ◽

Pupal Weight ◽

Filament Length ◽

Economic Traits ◽

Mulberry Leaves ◽

Flour Protein ◽

The Impact ◽

Silk Filament ◽

Silkworm Bombyx Mori

<div>Studies were carried out on the impact of supplementation of Zea mays flour on silkworm Bombyx mori belonging to double hybrid variety (PFD). The 3rd,4th 5th instars larvae were feed with leaves supplemented with different concentrations of Zea mays flour. Maximum larval weight was observed in 5th instar larvae in 10% Treatment (4.59±0.31g ) and 5% Treatment (3.98±0.23g ) as compared to the control (3.13± 0.14g ).Mulberry leaves treated with Zea mays flour protein (10%)fed larvae recorded a maximum cocoon weight (2.32±0.07g), pupal weight (1.53±0.12g) shell weight (0.42±0.02g) , shell ratio (24.55±0.62%) silk filament length (851.11±6.94m) silk filament weight (0.51±0.04g). Shell ratio in this treatment (10%) showed an increase of 18.38 % over control filament length 21.64% . Larvae fed with mulberry leaves enriched with Zea mays flour protein showed significant enchancement in economic characters of Bombyx mori was traced. </div>

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C/N RATIO OF MULBERRY LEAVES FED TO SILKWORM, Bombyx mori L. LARVAE AS AN INDEX FOR ITS PRODUCTIVITY.

Journal of Plant Protection and Pathology ◽

10.21608/jppp.2009.166838 ◽

2009 ◽

Vol 34 (4) ◽

pp. 3949-3964

Author(s):

M. Eid, ◽

Souad Mahmoud ◽

S. El-Maasarawy ◽

Hanan Hamada ◽

Ghada Hammad

Keyword(s):

Bombyx Mori ◽

Mulberry Leaves ◽

Bombyx Mori L ◽

Silkworm Bombyx Mori

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EFFECT OF ADDING SOME FOLIAR FERTILIZERS TO MULBERRY LEAVES ON SOME BIOLOGICAL ASPECTS AND SILK PRODUCTION OF SILKWORM Bombyx mori L.

Journal of Productivity and Development ◽

10.21608/jpd.2012.42465 ◽

2012 ◽

Vol 17 (2) ◽

pp. 211-221

Keyword(s):

Bombyx Mori ◽

Mulberry Leaves ◽

Silk Production ◽

Biological Aspects ◽

Bombyx Mori L ◽

Silkworm Bombyx Mori

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Effect of Tukra (Mealybug) Infected Mulberry Leaves on the Quantitative Traits of New Polyvoltine Strain of Silkworm, Bombyx mori L.

Journal of Entomology ◽

10.3923/je.2009.198.205 ◽

2009 ◽

Vol 6 (4) ◽

pp. 198-205

Author(s):

C. Ramesha ◽

S.V. Seshagiri ◽

H. Lakshmi ◽

S.S. Kumari ◽

C.G.P. Rao

Keyword(s):

Bombyx Mori ◽

Quantitative Traits ◽

Mulberry Leaves ◽

Bombyx Mori L ◽

Silkworm Bombyx Mori

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Seasonal Variations in the Silk Yield Contributing Characters of Forty-two Strains of the Silkworm, Bombyx mori (Lepidoptera: Bombycidae)

Journal of Entomological Science ◽

10.18474/0749-8004-30.3.297 ◽

1995 ◽

Vol 30 (3) ◽

pp. 297-311

Author(s):

S. K. Bhargava

Keyword(s):

Bombyx Mori ◽

Economic Value ◽

Filament Length ◽

Shell Weight ◽

Pupation Rate ◽

Bombyx Mori L ◽

And Training ◽

Silk Filament ◽

Training Institute ◽

Silkworm Bombyx Mori

Forty-two strains of the silkworm, Bombyx mori (L.), collected from China, Japan, Vietnam, South Korea, Brazil, India, and France were reared in the spring, summer and autumn seasons during 1991–92 at the Regional Station of Central Sericultural Research and Training Institute, Coonoor, Tamilnadu State, India. Analyses were made on five silk yield-contributing characters, namely pupation rate, cocoon weight, shell weight, cocoon shell ratio, and silk filament length. Results indicated the superiority of the following strains for all the above mentioned characters: 14M and JC2P (in spring); NBJPO and JC2P (in summer); and M2, NBJPO and SPJ2 (in autumn). The importance of rearing a given strain of silkworm in the optimal season for its maximum economic value in terms of silk yield is discussed.

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