Effect of Pollen a bee-hive product on some physiological, biochemical and economical characteristics of silkworm, Bombyx mori L.,

المجلة: SVU-International Journal of Agricultural Science

سنة النشر: 2022

تاريخ النشر: 2022-12-01

Pollen is one of the bee-hive products, which it's rich in protein and a wide range of vitamins. A study was carried out to evaluate the efficiency of pollen as nutritive supplementation on silkworm Bombyx mori Land compare its effect with ascorbic acid and an antibiotic (tetracycline). Three concentrations (2, 5 and 10 %) from (pollen, ascorbic acid, and tetracycline) were sprayed on fresh mulberry leaves and fed to silkworms, from the 4th to 5th instar larvae. The study was conducted to find out the physiological and biochemical changes in the haemolymph that occurred in the 5th instar larva. Some physiological parameters such as T.H.S, T.H.C, and D.H.T and six biochemical parameters such as total protein, total carbohydrates, total lipids, ALP, GOT and GPT, have been correlated with some productive traits as larval weights and cocoons parameters. The results showed pollen's ability to improve the physiological and economical characteristics of silkworm. Pollen at a concentration of (5%) had the best results. Further, the results suggest that coadministration of pollen (5%) with mulberry leaves has enhanced the biochemical reaction involved in the silk production in the silkworm.

Efficiency of some plants powder mix as a dietary supplement for silkworm (Bombyx mori L.)

المجلة: SVU-International Journal of Agricultural Science

سنة النشر: 2020

تاريخ النشر: 2020-09-08

Bombyx mori L. is one of the most economically important insects because of its production of silk. In this study, we investigated the effect of four plants powder mix on larvae weight, silk gland weight, cocoon parameters and fecundity of moths in two hybrids (local and imported) of silkworm. The most desirable effects (increased final larvae weight by over 8.93%, silk gland weight by over 37.45%, cocoon shell weight by over 39.84% and No. of eggs by over 28.93%) was obtained by treatment of mulberry leaves with (M2) in local hybrid. Meanwhile in imported hybrid the most desirable effects (increased final larvae weight by over 3.75%, silk gland weight by over 51.29%. cocoon shell weight by over 22.17% and No. of eggs by over 55.87%) was got by treatment of mulberry leaves with (M3) and feed it to the larvae. According to the results, It can enrich the nutrient quality of mulberry leaves provided to the silkworm by adding such plant materials, which lead to raising the efficiency of larvae productivity, increasing the quantity and quality of cocoons, and then improving the production of silk.

Using of some plant extracts and honeybee products for feeding of imported and local hybrids of mulberry silkworm (Bombyx mori L.)

المجلة: J. Plant Prot. and Path., Mansoura Univ.

سنة النشر: 2016

تاريخ النشر: 2016-02-02

Nine aqueous or alcoholic plant extracts and three hive products were offered to 4th and 5th instar of imported and local hybrids of silkworm. They were: aqueous and alcoholic extracts of Eucalyptus, Mulberry, Christ's thorn (Hozaen and Baladi), Psidium, Ocimum basilicum, Mint, Budlia asiatica, Lantana camara, and Pollen, Bee Bread, Propolis. The measured or calculated parameters were: initial, final, average larval weight (g) and growth index, silk glands weight and ratio %, weight of cocoons, cocoon's shell and pupae, and cocoon shell ratio %. Concerning imported race of silkworm, feeding with mulberry leaves treated with aqueous extracts leads to significant increment of cocoon shell weight (g) in Eucalyptus, Christ's thorn (Baladi), O. basilicum, mint, pollen and propolis. Insignificant increase in cocoon shell ratio % was noticed in Eucalyptus, Psidium, mint and propolis, while in case of alcoholic extracts, maximum significant shell weight was detected in Christ's thorn (Baladi) treatment, followed by: Eucalyptus, mulberry, Christ's thorn (Hozaen), Psidium, O. basilicum and mint, with significant differences with control. Insignificant increment in cocoon shell ratio % was noticed in Psidium treatment only. All differences in treatments of imported race were significant with both of aqueous or alcoholic extracts, except cocoon shell ratio %. Concerning local race of silkworm, feeding with mulberry leaves which treated with tested aqueous extracts leads to significant increase in cocoon shell weight (gm) in Eucalyptus, mulberry, Christ's thorn (Hozaen), B. asiatica, L. camara, and pollen treatments, and insignificant increase in Christ's thorn (Baladi), Psidium, O. basilicum, and mint treatments. General increase in cocoon shell ratio % in all treatments except bee bread and significant differences were detected in Eucalyptus and propolis treatments, while in case of alcoholic extracts significant increase in cocoon shell weight (gm) was found in B. asiatica treatment, followed by: eucalyptus, mulberry, Christ's thorn (Hozaen), L. camara, pollen and propolis treatments. Insignificant increment in cocoon shell ratio % in propolis, L. camara, B. asiatica, mint and Eucalyptus. For local hybrid of silkworm, no significant differences in alcoholic treatments, were observed, however insignificant increment differences were detected in five treatments. Aqueous extracts of Eucalyptus or propolis increased cocoon shell ratio % in both of tested hybrids. Aqueous or alcoholic extracts of B. asiatica or L. camara increased cocoon shell ratio % in local hybrid. Aqueous extracts increased cocoon shell ratio % in 15 cases, while in case of alcoholic extracts in 6 cases only. The most effective treatments were: Eucalyptus, Psidium and propolis. Using of aqueous extracts was more effective available, and cheap as compared with using alcohol in extraction