Feed efficiency of the silkworm Bombyx mori L. Hybrid (NB4D2 × KA)

Raman, K; Magadum, S. Β.; Datta, R. Κ.

doi:10.1017/s1742758400015320

Cited by 5 publications

(6 citation statements)

References 9 publications

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“…The result is statistically significant (P ≥ 0.05) with growth from the first to fifth larval instar. The increase in cellulolytic bacteria was directly proportional to the ingesta and digesta observed by Raman et al, ( 1994 ), which shows that, there is a relationship between gut bacteria and digestion. The reduction of total bacterial count from first to fifth instar larvae might be the result of the increase in cellulolytic bacteria.…”

Section: Discussionsupporting

confidence: 52%

“…Raman et al, ( 1994 ) observed food consumption and utilization in B. mori larvae and concluded that: 1) the approximate digestability (AD) and efficiency of conversion of ingested food (ECI) were inversely correlated to the larval stage. 2) ingesta and digesta required to produce lgram body weight progressively increased from the 1 st — 5 th instar.…”

Section: Discussionmentioning

confidence: 99%

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Isolation and Characterization of Bacteria from the Gut ofBombyx morithat Degrade Cellulose, Xylan, Pectin and Starch and Their Impact on Digestion

Anand

Vennison

Sankar

et al. 2010

Journal of Insect Science

276

191

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Bombyx mori L. (Lepidoptera: Bombycidae) have been domesticated and widely used for silk production. It feeds on mulberry leaves. Mulberry leaves are mainly composed of pectin, xylan, cellulose and starch. Some of the digestive enzymes that degrade these carbohydrates might be produced by gut bacteria. Eleven isolates were obtained from the digestive tract of B. mori, including the Gram positive Bacillus circulans and Gram negative Proteus vulgaris, Klebsiella pneumoniae, Escherichia coli, Citrobacter freundii, Serratia liquefaciens, Enterobacter sp., Pseudomonas fluorescens, P. aeruginosa, Aeromonas sp., and Erwinia sp.. Three of these isolates, P. vulgaris, K. pneumoniae, C. freundii, were cellulolytic and xylanolytic, P. fluorescens and Erwinia sp., were pectinolytic and K. pneumoniae degraded starch. Aeromonas sp. was able to utilize the CMcellulose and xylan. S. liquefaciens was able to utilize three polysaccharides including CMcellulose, xylan and pectin. B. circulans was able to utilize all four polysaccharides with different efficacy. The gut of B. mori has an alkaline pH and all of the isolated bacterial strains were found to grow and degrade polysaccharides at alkaline pH. The number of cellulolytic bacteria increases with each instar.

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Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Isolation and Characterization of Bacteria from the Gut ofBombyx morithat Degrade Cellulose, Xylan, Pectin and Starch and Their Impact on Digestion

Anand

Vennison

Sankar

et al. 2010

Journal of Insect Science

276

191

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“…The main objective of this study was to identify bivoltine silkworm breeds with nutrition efficiency among eighteen bivoltine breeds evaluated for 19 important nutrigenetic traits. The results obtained for conversion index and efficiency of conversion of ingesta to biomass through standard gravimetric method during spring season (2018 & 2019) is supported by earlier observations [37,38,7,39,40]. Our emphasis was on the phenotypic manifestation of 19 nutrigenetic traits.…”

Section: Discussionsupporting

confidence: 82%

“…The capacity of silkworm, to ingest mulberry leaf, digest, absorb, assimilate and convert it to silk fibre also differs from race to race [5]. The efficiency of converting the ingested and digested food into the body, cocoon and cocoon shell varies among silkworm races under the influence of season and mulberry varieties [6,7,8,9].…”

Section: Introductionmentioning

confidence: 99%

To Workout Nutrigenetic Traits for Silkworm, Bombyx mori L. by Absorption/Assimilation for Determining Growth and Development for Identifying Parental Breeds for Future Breeding during Spring Season under Subtropical Region of North West India

Murali¹,

Singh²

2020

CJAST

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Study was conducted for screening and evaluation of selected breed’s for nutrigenetic traits in silkworm, Bombyx mori L. (Lepidoptera: Bombycidae) is an essential prerequisite for better understanding and development of nutritionally efficient breeds under Subtropical condition of North Western India based on the breeds which shows less food consumption with higher efficiency conversion. The aim of this study was to identify nutritionally efficient bivoltine silkworm breeds selected from different regions of our country. Highly significant differences were found among all nutrigenetic traits of bivoltine silkworm breeds in the study. The nutritionally efficient silkworm breeds were resulted by utilizing nutrition consumption index and efficiency for conversion of ingesta/cocoon traits as the index for selection of highly promising breeds. Higher nutritional efficiency conversions were found in the bivoltine silkworm breeds on efficiency of conversion of ingesta to cocoon and shell were shortlisted during spring season. Furthermore, based on the overall nutrigenetic traits utilized as index, eight bivoltine silkworm breeds (B.con 1, B.con 4, BHR 2, ATR 16, BHR 3, CSR 50, RSJ 14 and NB4D2) were identified as having the potential for nutrition efficiency conversion and can be utilized for further breeding programme. The data from the present study advances our knowledge for the development of nutritionally efficient silkworm breeds/hybrids and their effective commercial utilization in the sericulture industry.

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“…Colonization by symbiotic gut bacteria is inevitable in O. rhinoceros larvae, which possess a large fermentation chamber in the gut that assists in symbiotic digestion and the number of cellulolytic bacteria increases with each instar along with volume of food consumed . Identification of these bacteria in their insect host and the novel strategy of killing a pest by inhibiting symbiotic bacterial growth will pave the way for a method of pest control without developing insect resistance against phytocompounds.…”

Section: Introductionmentioning

confidence: 99%

Larvicidal efficacy of Adiantobischrysene from Adiantum latifolium against Oryctes rhinoceros through disrupting metamorphosis and impeding microbial mediated digestion

Kumar

John

Kumar³

et al. 2018

Pest Management Science

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Feed efficiency of the silkworm Bombyx mori L. Hybrid (NB4D2 × KA)

Cited by 5 publications

References 9 publications

Isolation and Characterization of Bacteria from the Gut ofBombyx morithat Degrade Cellulose, Xylan, Pectin and Starch and Their Impact on Digestion

Isolation and Characterization of Bacteria from the Gut ofBombyx morithat Degrade Cellulose, Xylan, Pectin and Starch and Their Impact on Digestion

To Workout Nutrigenetic Traits for Silkworm, Bombyx mori L. by Absorption/Assimilation for Determining Growth and Development for Identifying Parental Breeds for Future Breeding during Spring Season under Subtropical Region of North West India

Larvicidal efficacy of Adiantobischrysene from Adiantum latifolium against Oryctes rhinoceros through disrupting metamorphosis and impeding microbial mediated digestion

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