Silkworm
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The silkworm moth lives only in captivity and can no longer survive independently in nature since it has lost the ability to fly. Silkworms go through three life stages - larvae, pupae, and adult. They are specialized feeders that only eat mulberry tree leaves. After centuries of domestication, adult silkworms can no longer fly or exist in their natural habitat. A silkworm cocoon is made of a single silk strand over 900 meters long, and it takes 300 cocoons to make 1 pound of silk. Studies show silkworms use two basic movements, stretch-bend and swing-swing, to construct their protective cocoon envelopes.
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Presentation on Silkworm
The life cycle of a silk worm goes through four stages - egg, larva, pupa, and adult moth. Silk worms are caterpillars that hatch from eggs and feed on mulberry leaves, growing over 5 stages until ready to pupate. They then spin cocoons from silk to undergo metamorphosis, emerging 2-3 weeks later as adult moths to lay more eggs, repeating the cycle.
life cycle of silkworm
The silkworm Bombyx mori produces silk for commercial use. It goes through four stages in its life cycle: egg, larva, pupa, and adult moth. The larva, called a silkworm, eats mulberry leaves and grows, molting four times over 27 days. It then spins a cocoon made of silk threads to protect itself as a pupa, undergoing metamorphosis inside for 2-3 weeks until emerging as an adult moth.
IND-2012-14 Prestine Public School Saving Silkworm and yet using silk
This document discusses silk production from silkworms and the various uses of silk fabric. It describes the lifecycle of the silkworm from egg to cocoon formation. It notes that silk can be produced without killing the silkworm by using wild silks like Eri silk where the moth chews its way out of the cocoon. The document outlines the major types of silk including Mulberry, Tasar, Muga, and Eri silk. It discusses how silk is used for various textiles, clothing, furnishings and more due to its strength, appearance and other properties. The document provides information on identifying silk through burn testing and its production process from cocoon to textiles.
All About Silkworms
Silkworms undergo four moltings as they develop from larvae to adult moths. They exclusively eat mulberry tree leaves. While silkworms were once wild, they are now only raised in captivity as people have domesticated them, causing the insects to lose their ability to fly and survive independently. Silkworms produce silk from which many textile products like clothes, sheets, and pajamas are made, making them an important source of silk without which these silk goods would not exist.
LIFE CYCLE of silkworm
The silkworm is the larva of the domesticated silk moth Bombyx mori. It spins a cocoon which is later processed to yield silk fiber. According to legend, silk production began when a Chinese empress discovered silk filaments unwinding from a cocoon in her tea. The lifecycle of the silkworm progresses from egg to larva, to pupa inside a cocoon, and finally adult moth. Sericulture, or silk farming, is economically important as the silk industry processes cocoons to make silk thread.
Govind Life cycle of silk moth
The silk moth has a four stage lifecycle of egg, larva/caterpillar, pupa/cocoon, and adult moth. Historically, silk production began in ancient China and spread along trade routes, becoming an important economic commodity and influencing many countries. The lifecycle begins with a female silk moth laying hundreds of tiny eggs, which hatch into caterpillars that feed on mulberry leaves and molt. The caterpillars then spin cocoons and undergo metamorphosis to emerge as adult silk moths, restarting the cycle.
Sericulture
Sericulture is the cultivation of silkworms to produce silk. The most widely used silkworm is Bombyx mori, which was first domestically raised in China thousands of years ago. Today, China and India are the world's largest silk producers, responsible for over 60% of global production annually. Sericulture is important in other countries as well, serving as a cottage industry.
Silkworm
The mulberry silkworm, Bombyx mori, is an economically important insect domesticated for silk production. It was first cultivated in China around 3500 BC to produce silk. As a domesticated insect, it is completely dependent on humans for feeding and reproduction. The larvae feed exclusively on mulberry leaves, while the adult moths do not eat and focus on mating. Silk production remains an important industry in countries like China, India, and Italy, providing income to many families and communities through sericulture.
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Presentation on Silkworm
The life cycle of a silk worm goes through four stages - egg, larva, pupa, and adult moth. Silk worms are caterpillars that hatch from eggs and feed on mulberry leaves, growing over 5 stages until ready to pupate. They then spin cocoons from silk to undergo metamorphosis, emerging 2-3 weeks later as adult moths to lay more eggs, repeating the cycle.
life cycle of silkworm
The silkworm Bombyx mori produces silk for commercial use. It goes through four stages in its life cycle: egg, larva, pupa, and adult moth. The larva, called a silkworm, eats mulberry leaves and grows, molting four times over 27 days. It then spins a cocoon made of silk threads to protect itself as a pupa, undergoing metamorphosis inside for 2-3 weeks until emerging as an adult moth.
IND-2012-14 Prestine Public School Saving Silkworm and yet using silk
This document discusses silk production from silkworms and the various uses of silk fabric. It describes the lifecycle of the silkworm from egg to cocoon formation. It notes that silk can be produced without killing the silkworm by using wild silks like Eri silk where the moth chews its way out of the cocoon. The document outlines the major types of silk including Mulberry, Tasar, Muga, and Eri silk. It discusses how silk is used for various textiles, clothing, furnishings and more due to its strength, appearance and other properties. The document provides information on identifying silk through burn testing and its production process from cocoon to textiles.
All About Silkworms
Silkworms undergo four moltings as they develop from larvae to adult moths. They exclusively eat mulberry tree leaves. While silkworms were once wild, they are now only raised in captivity as people have domesticated them, causing the insects to lose their ability to fly and survive independently. Silkworms produce silk from which many textile products like clothes, sheets, and pajamas are made, making them an important source of silk without which these silk goods would not exist.
LIFE CYCLE of silkworm
The silkworm is the larva of the domesticated silk moth Bombyx mori. It spins a cocoon which is later processed to yield silk fiber. According to legend, silk production began when a Chinese empress discovered silk filaments unwinding from a cocoon in her tea. The lifecycle of the silkworm progresses from egg to larva, to pupa inside a cocoon, and finally adult moth. Sericulture, or silk farming, is economically important as the silk industry processes cocoons to make silk thread.
Govind Life cycle of silk moth
The silk moth has a four stage lifecycle of egg, larva/caterpillar, pupa/cocoon, and adult moth. Historically, silk production began in ancient China and spread along trade routes, becoming an important economic commodity and influencing many countries. The lifecycle begins with a female silk moth laying hundreds of tiny eggs, which hatch into caterpillars that feed on mulberry leaves and molt. The caterpillars then spin cocoons and undergo metamorphosis to emerge as adult silk moths, restarting the cycle.
Sericulture
Sericulture is the cultivation of silkworms to produce silk. The most widely used silkworm is Bombyx mori, which was first domestically raised in China thousands of years ago. Today, China and India are the world's largest silk producers, responsible for over 60% of global production annually. Sericulture is important in other countries as well, serving as a cottage industry.
Silkworm
The mulberry silkworm, Bombyx mori, is an economically important insect domesticated for silk production. It was first cultivated in China around 3500 BC to produce silk. As a domesticated insect, it is completely dependent on humans for feeding and reproduction. The larvae feed exclusively on mulberry leaves, while the adult moths do not eat and focus on mating. Silk production remains an important industry in countries like China, India, and Italy, providing income to many families and communities through sericulture.
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This document provides information about fibers and the process of making fabric from fibers. It discusses natural fibers like cotton and wool that come from plants and animals. Wool comes from the fleece of sheep and other animals and involves shearing the fleece, scouring it, sorting, picking out fibers called burrs, dyeing, spinning into yarn, and weaving into fabric. Silk fiber comes from silkworm cocoons and involves rearing silkworms on mulberry leaves, harvesting and boiling the cocoons to extract the silk fiber, and reeling it into thread that can then be woven. The document also discusses man-made fibers like nylon and acrylic that are synthesized in laboratories.
Sericulture & types of silks 1
Sericulture is an agro-based industry that involves rearing silkworms for the production of raw silk. Silkworms spin silk cocoons after feeding on selected food plants. The major activities of sericulture include cultivating food plants for silkworms, obtaining silk cocoons, and reeling the cocoons to unwind silk filaments.
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This document provides instructions for rearing silkworms. It discusses the lifecycle of silkworms, which includes four stages: egg, larva, pupa, and adult moth. As larvae, silkworms are fed mulberry leaves and grow through several molts until spinning a cocoon. Inside the cocoon, the larva undergoes metamorphosis to become a pupa and then adult moth. Precise care is required at each stage to ensure the silkworms' health, including storing eggs in the fridge, providing fresh mulberry leaves, and keeping the environment clean.
Varun das v s power point presentation on sericulture
Sericulture is the process of rearing silkworms for the production of silk. The most widely used silkworm is Bombyx mori. The silkworm lays thousands of eggs and the larvae feed on mulberry leaves. The silkworm spins approximately 1 mile of filament and encloses itself in a cocoon in 2-3 days. Sericulture is a cottage industry that provides employment and helps alleviate poverty in rural areas as it is a profitable activity with indigenous low-cost technology and regular returns.
Sericulture
Sericulture is the science of rearing silkworms for silk production. There are three main branches of sericulture: mulberry cultivation, silkworm rearing from egg to larval stage, and silk reeling and weaving from cocoon onwards. Silk is a natural protein fiber secreted by silkworms in the form of a long thread that makes up their cocoon, which protects the pupa inside. Silk is composed of two proteins, fibroin and sericin, and has properties such as being crystalline, homogenous in structure, hygroscopic, light in weight, the strongest and longest of natural fibers, soft and lustrous, takes dyes well, is elastic and has high tensile
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The document discusses the origins and history of sericulture (silk production) in India and China. It notes that silk production began in China before 3000 BC and was a closely guarded secret for over 2800 years. It then spread along the Silk Road to India and other parts of Asia. Today, India is the second largest producer of silk after China, with states like Karnataka, Tamil Nadu and Andhra Pradesh dominating production. Mulberry silk accounts for the majority of Indian production.
Mulberry Silk & Non-mulberry Silk
Silk is a natural protein fiber, some forms of which can be woven into textiles. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).
Online assignment
Silk is produced by silkworms through a process called sericulture. Silkworms, such as the domesticated Bombyx mori, spin silk cocoons. Sericulture has a long history in India and China, where it began over 5000 years ago and was originally kept secret. India is a major producer of silk and sericulture provides employment and economic growth through activities like mulberry cultivation, silk worm rearing, and silk production. There are four main types of silkworms - mulberry, eri, tasar, and muga - which produce different silks and are reared on various host plants. Sericulture remains an important industry in India.
Races of bombyx mori
There are different races of Bombyx mori (silkworm) based on their voltinism (number of generations per year) and moulting. Races can be univoltine (1 generation/year), bivoltine (2 generations/year), or multivoltine (more than 2 generations/year). They also differ based on whether their eggs are diapausing (dormant) or non-diapausing. Bivoltine races lay both types of eggs, while univoltine races only lay diapausing eggs and multivoltine only lay non-diapausing eggs. Races also vary in their larval stage duration, cocoon characteristics,
Sericulture
This document summarizes the life cycle and production of silk. It discusses that silk is produced by silkworms, specifically Bombyx mori, which eat mulberry leaves. It describes the five stages of the silkworm's life cycle - egg, larva/caterpillar, pupa, cocoon, and adult moth. It also discusses the history and types of silk production, the rearing process of silkworms, and their diseases.
Economic value of products of silkworm [autosaved]
The document discusses the economic value of silkworms, focusing on four main types: the mulberry silkworm, eri silkworm, tasar silkworm, and muga silkworm. It describes the life cycle of each silkworm, their host plants, and production of silk. The mulberry silkworm is the most important for commercial silk production. It provides two valuable products - silk fibers and gut, which are used in textiles, surgery, and fishing. Sericulture is an important practice for silk production worldwide.
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This document discusses sericulture, the production of raw silk by raising silkworms. It provides definitions of sericulture and describes the history and origins of silk production in China and its introduction to India. It discusses the various species of silkworm used, including Bombyx mori, and the different types of silk produced. The stages of silk production from egg laying to cocoon harvesting are outlined. Common silkworm diseases and their management are also covered. Finally, it provides an overview of tools and materials used, the distribution and production of silk globally, and the advantages and disadvantages of silk.
Sericulture
Sericulture is the process of raising silkworms to produce silk. There are two main types of silkworms - mulberry silkworms that eat mulberry leaves, and non-mulberry silkworms that eat other plants like castor, som, and soalu leaves. The main silkworm types are the mulberry silkworm Bombyx mori, eri silkworm Philosamia cynthia, muga silkworm Antheraea assamensis, and tasar silkworm Antheraea mylitta. Sericulture is an important agro-industry and cottage industry in India and China.
sericulture in india
This document discusses sericulture and silkworm identification. It begins by defining sericulture and moriculture. It then describes the five major types of silkworms used for commercial silk production - mulberry, tasar, oak tasar, eri, and muga. Each type of silkworm is discussed in 1-2 paragraphs, including what they feed on and where they are produced. The stages of silk production from egg to cocoon harvesting are summarized. Global silk production percentages by country are listed. Finally, it outlines some opportunities in sericulture like employment, profits, technology, and demand.
Sericulture - A Detailed Study
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This Was Done In PowerPoint 2016.
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This document provides classifications and details about silkworms and their host plants. It discusses 5 classifications of silkworms based on voltinism, moulting, geographical distribution, genetic nature, and host plants. It then provides details about the morphology, life cycle, and host plants of the major silkworm species, including the domesticated mulberry silkworm Bombyx mori, the non-mulberry eri silkworm Samia cynthia ricini, the tasar silkworm Antheraea mylitta, and the muga silkworm Antheraea assamensis.
2 chapter types of silk and silkworm sps.
This document discusses different types of silks and species of silkworms. It begins by classifying silkworms taxonomically. The main types of silks discussed are Mulberry silk, Tasar silk, Muga silk, and Eri silk. For each type, it provides the scientific name of the silkworm species, its main host plants, and brief descriptions. It also discusses the life cycle of silkworms from eggs to cocoons. The document serves as an overview of major silkworm species and silk types found in India.
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This document summarizes the process of sericulture, or silk production. It discusses how silk production began in China thousands of years ago and later spread to other parts of Asia, Europe, Africa. It describes the lifecycle of silk worms and the various types of silk produced in different parts of India. It also notes some health hazards that can arise from handling silkworms and working long hours in silk production facilities.
Sericulture
The rearing of silkworms for the production of silk
is called sericulture.
India is the second largest silk producing country in
the world next to China.
Silk is the secretion from the salivary glands which
are found on both sides of the alimentary canal of
silkworm larvae and this secretion hardens into
fine threads called silk.
Sericulture: History,silk route & types of silk
The document discusses the history and process of sericulture (silk farming). It notes that sericulture originated in China, where the empress Lei Zu discovered silk. It then describes the life cycle of the silkworm Bombyx mori, from egg to larva to cocoon stage. The process of extracting silk from the cocoons is also summarized, including boiling, unwinding filaments, and reeling strands together to produce raw silk.
Silkworms and silkworm pupa
The document discusses global trends in the use of mulberry plants and silkworms for non-textile purposes. It outlines how various byproducts and waste from sericulture, including mulberry leaves, silkworm eggs, larvae, pupae, moths, can be utilized. For example, silkworm larvae and eggs contain proteins and other compounds that have medicinal properties. Pupae oil is used in cosmetics and pharmaceuticals. Research in countries like Romania, Bulgaria, and Korea is exploring new commercial products from sericulture waste, such as cosmetic creams from pupae oil or supplements from silkworm powder. The document advocates for fully utilizing sericulture byproducts to increase profits from the industry and
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This document summarizes a study on integrated disease management in silkworm Bombyx mori L. It discusses the major predisposing factors for silkworm diseases like constitution, nutrition, crowding, pathogens, and environment. It outlines the different aspects of integrated disease management including disinfection, hygiene maintenance, silkworm rearing management, and disease control measures. The results of rearings conducted during an unfavorable season show that the integrated approach adopted in the treatment batches led to significantly lower mortality from diseases compared to the control batches.
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Sericulture is an agro-based industry that involves rearing silkworms for the production of raw silk. Silkworms spin silk cocoons after feeding on selected food plants. The major activities of sericulture include cultivating food plants for silkworms, obtaining silk cocoons, and reeling the cocoons to unwind silk filaments.
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Varun das v s power point presentation on sericulture
Sericulture is the process of rearing silkworms for the production of silk. The most widely used silkworm is Bombyx mori. The silkworm lays thousands of eggs and the larvae feed on mulberry leaves. The silkworm spins approximately 1 mile of filament and encloses itself in a cocoon in 2-3 days. Sericulture is a cottage industry that provides employment and helps alleviate poverty in rural areas as it is a profitable activity with indigenous low-cost technology and regular returns.
Sericulture
Sericulture is the science of rearing silkworms for silk production. There are three main branches of sericulture: mulberry cultivation, silkworm rearing from egg to larval stage, and silk reeling and weaving from cocoon onwards. Silk is a natural protein fiber secreted by silkworms in the form of a long thread that makes up their cocoon, which protects the pupa inside. Silk is composed of two proteins, fibroin and sericin, and has properties such as being crystalline, homogenous in structure, hygroscopic, light in weight, the strongest and longest of natural fibers, soft and lustrous, takes dyes well, is elastic and has high tensile
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The document discusses the origins and history of sericulture (silk production) in India and China. It notes that silk production began in China before 3000 BC and was a closely guarded secret for over 2800 years. It then spread along the Silk Road to India and other parts of Asia. Today, India is the second largest producer of silk after China, with states like Karnataka, Tamil Nadu and Andhra Pradesh dominating production. Mulberry silk accounts for the majority of Indian production.
Mulberry Silk & Non-mulberry Silk
Silk is a natural protein fiber, some forms of which can be woven into textiles. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).
Online assignment
Silk is produced by silkworms through a process called sericulture. Silkworms, such as the domesticated Bombyx mori, spin silk cocoons. Sericulture has a long history in India and China, where it began over 5000 years ago and was originally kept secret. India is a major producer of silk and sericulture provides employment and economic growth through activities like mulberry cultivation, silk worm rearing, and silk production. There are four main types of silkworms - mulberry, eri, tasar, and muga - which produce different silks and are reared on various host plants. Sericulture remains an important industry in India.
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There are different races of Bombyx mori (silkworm) based on their voltinism (number of generations per year) and moulting. Races can be univoltine (1 generation/year), bivoltine (2 generations/year), or multivoltine (more than 2 generations/year). They also differ based on whether their eggs are diapausing (dormant) or non-diapausing. Bivoltine races lay both types of eggs, while univoltine races only lay diapausing eggs and multivoltine only lay non-diapausing eggs. Races also vary in their larval stage duration, cocoon characteristics,
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This document summarizes the life cycle and production of silk. It discusses that silk is produced by silkworms, specifically Bombyx mori, which eat mulberry leaves. It describes the five stages of the silkworm's life cycle - egg, larva/caterpillar, pupa, cocoon, and adult moth. It also discusses the history and types of silk production, the rearing process of silkworms, and their diseases.
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Presentation of sericulture
This document discusses sericulture, the production of raw silk by raising silkworms. It provides definitions of sericulture and describes the history and origins of silk production in China and its introduction to India. It discusses the various species of silkworm used, including Bombyx mori, and the different types of silk produced. The stages of silk production from egg laying to cocoon harvesting are outlined. Common silkworm diseases and their management are also covered. Finally, it provides an overview of tools and materials used, the distribution and production of silk globally, and the advantages and disadvantages of silk.
Sericulture
Sericulture is the process of raising silkworms to produce silk. There are two main types of silkworms - mulberry silkworms that eat mulberry leaves, and non-mulberry silkworms that eat other plants like castor, som, and soalu leaves. The main silkworm types are the mulberry silkworm Bombyx mori, eri silkworm Philosamia cynthia, muga silkworm Antheraea assamensis, and tasar silkworm Antheraea mylitta. Sericulture is an important agro-industry and cottage industry in India and China.
sericulture in india
This document discusses sericulture and silkworm identification. It begins by defining sericulture and moriculture. It then describes the five major types of silkworms used for commercial silk production - mulberry, tasar, oak tasar, eri, and muga. Each type of silkworm is discussed in 1-2 paragraphs, including what they feed on and where they are produced. The stages of silk production from egg to cocoon harvesting are summarized. Global silk production percentages by country are listed. Finally, it outlines some opportunities in sericulture like employment, profits, technology, and demand.
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This Was Done In PowerPoint 2016.
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This document provides classifications and details about silkworms and their host plants. It discusses 5 classifications of silkworms based on voltinism, moulting, geographical distribution, genetic nature, and host plants. It then provides details about the morphology, life cycle, and host plants of the major silkworm species, including the domesticated mulberry silkworm Bombyx mori, the non-mulberry eri silkworm Samia cynthia ricini, the tasar silkworm Antheraea mylitta, and the muga silkworm Antheraea assamensis.
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This document discusses different types of silks and species of silkworms. It begins by classifying silkworms taxonomically. The main types of silks discussed are Mulberry silk, Tasar silk, Muga silk, and Eri silk. For each type, it provides the scientific name of the silkworm species, its main host plants, and brief descriptions. It also discusses the life cycle of silkworms from eggs to cocoons. The document serves as an overview of major silkworm species and silk types found in India.
Sericulture by Appy
This document summarizes the process of sericulture, or silk production. It discusses how silk production began in China thousands of years ago and later spread to other parts of Asia, Europe, Africa. It describes the lifecycle of silk worms and the various types of silk produced in different parts of India. It also notes some health hazards that can arise from handling silkworms and working long hours in silk production facilities.
Sericulture
The rearing of silkworms for the production of silk
is called sericulture.
India is the second largest silk producing country in
the world next to China.
Silk is the secretion from the salivary glands which
are found on both sides of the alimentary canal of
silkworm larvae and this secretion hardens into
fine threads called silk.
Sericulture: History,silk route & types of silk
The document discusses the history and process of sericulture (silk farming). It notes that sericulture originated in China, where the empress Lei Zu discovered silk. It then describes the life cycle of the silkworm Bombyx mori, from egg to larva to cocoon stage. The process of extracting silk from the cocoons is also summarized, including boiling, unwinding filaments, and reeling strands together to produce raw silk.
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Sericulture (Silk Farming)
It describes everything about Sericulture (Silk Farming).
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Global production of Silk.
How it can be done.What are the ways to do it.
Sericulture
- A Chinese empress discovered silk when a silkworm cocoon fell into her tea, unraveling a silk strand
- She realized the strand came from a silkworm larva inside the cocoon and taught others about silk production
- Sericulture is the process of raising silkworms for silk, with Bombyx mori being the most common species
- Silkworms eat mulberry leaves and spin cocoons, from which the silk filaments are extracted to make thread
Semisolid dosage form..
This document provides an overview of semi-solid dosage forms. It defines semi-solids as products that tend to alleviate or treat pathological conditions when applied to the skin or mucous membranes. Ideal properties include a smooth texture, elegant appearance, and non-irritating qualities. Common types are ointments, creams, pastes, gels, and suppositories. Formulation involves selecting appropriate bases, preservatives, and other excipients. Methods of preparation include size reduction, levigation, mixing, homogenization, and filling. Evaluation tests physical properties, drug release, and stability.
Sericulture
Sericulture in India involves the cultivation of mulberry plants as a food source for silkworms to produce silk. Major silk varieties include mulberry silk, tasar silk, oak tasar, eri, and muga silk. Mulberry silk comes from the domesticated Bombyx mori silkworm feeding solely on mulberry leaves. Mulberry is commercially grown using cuttings in nurseries before transplanting. Proper spacing, fertilization, irrigation, and pruning are required for healthy mulberry cultivation to support a thriving sericulture industry in India.
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Sericulture
silk worm is a holo metabolous insect four stages are there in its life cycle. 1. Egg 2. Larva ( 5 instars) 3. Pupa 4. Adult. rearing of silkworms is called sericulture. Moriculture is the science of mulberry cultivation to rear silk worms for silk production. Bombyx mori feed specifically on mulberry leaves, Different types of silk worms. There are five major types of silk of commercial importance, obtained from different species of silkworms which in turn feed on a number of food plants: Except mulberry, other varieties of silks are generally termed as non mulberry silks. India has the unique distinction of producing all these commercial varieties of silk. SILK WORM TYPES ARE:- 1. Mulberry silk worm. 2. Tasar silk worm. 3. Oak Tasar silk worm. 4. Eri silk worm. 5. Muga silk worm. silk gland is modified salivary gland produces silk, The silk of silkworms is secreted by a pair of labial gland, known as silk glands. The silk glands lie ventral to the alimentary canal. In full grown larvae, these occupy most of the body cavity. The silk glands are tubular in shape with different diameters in different regions. Each gland has 3 distinct regions
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This document discusses non-timber forest products (NTFPs) and focuses on sericulture, the process of silk production. It defines NTFPs as useful substances obtained from forests that do not require tree harvesting. Common NTFPs include seeds, berries, mushrooms, foliage and medicinal plants. The document then discusses the economic importance of NTFPs, providing examples like medicinal plants, game and apiculture. It notes NTFPs can be an important source of income. The document proceeds to describe sericulture, the rearing of silkworms for silk production. It details the life cycle of silkworms, from eggs to cocoon spinning. It explains how silk is produced from the cocoons
SILKWORM.pptx
Silkworms (Bombyx mori) produce silk by feeding on mulberry leaves as larvae. They spin cocoons made of silk secreted from their salivary glands to undergo pupation. There are three main types of silkworms: univoltine which have one generation per year, bivoltine which breed twice annually, and polyvoltine which can breed over 5-6 times per year in tropical climates. The silkworm lifecycle involves larvae molting four times before spinning a cocoon, then emerging as an adult silk moth.
Weavingprocess
1) Silk is produced from the cocoons of the mulberry silk moth through a process called sericulture.
2) Silkworm eggs are hatched and fed mulberry leaves, causing the larvae to grow.
3) The silkworm spins a cocoon and undergoes metamorphosis. The filaments from multiple cocoons are then delicately unwound to create a single silk strand.
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2. It then provides details on the various types of silkworms used for silk production like Bombyx mori and their life cycles.
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Notes on "SERICULTURE" for the school , UG and PG Students.
Sericulture, the production of raw silk by means of raising caterpillars (larvae), particularly those of the domesticated silkworm (Bombyx mori). ... Care of the silkworm from the egg stage through completion of the cocoon. Production of mulberry trees that provide leaves upon which the worms feed.
Life Cycle of Bombyx mori.pptx
1. The document discusses the life cycle of the Bombyx mori silkworm, from egg to adult moth. It describes the stages of egg, larva (with 5 instar stages), pupa, and adult.
2. The larva feeds voraciously on mulberry leaves and molts its skin 5 times before spinning a cocoon and entering the pupa stage.
3. The document provides information on the systematic classification of B. mori and includes diagrams illustrating its life cycle. It also gives a brief introduction and history of sericulture, the rearing of silkworms for silk production.
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SERICULTURE.pptx
As it is a elective paper for UG this Topic is related to types of Silkworms includes domestic and wild type silkworms - exotic and indigenous species. Hybrid races of silkworms to increase the quality and quantity of cocoon hence to increase the silk production. Life cycle of Bombyx mori. Structure of silk gland and secretion of silk.
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The document summarizes the process of silk manufacturing from cultivating silkworm cocoons through producing silk yarn. It describes how silkworms are bred and fed mulberry leaves, which causes them to spin cocoons. The cocoons are then sorted, dried, and graded. Acceptable cocoons undergo filature operations where the silk filament is reeled from the cocoon, producing raw silk. The raw silk can then be further processed into yarns or fabrics.
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Sericulture is the cultivation of silkworms for the production of raw silk. It involves three main activities - production of mulberry leaves as food for silkworms, rearing of silkworms to produce cocoons, and reeling of cocoons to yield silk filaments. Sericulture is an important agro-based cottage industry in India and several other Asian countries that provides livelihood to millions of people.
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Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
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Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
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2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
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Silkworm
- 2. Habitat Today, the silkworm moth lives only in captivity. Silkworms have been domesticated so that they can no longer survive independently in nature, particularly since they have lost the ability to fly. •The silkworm is a very specialized feeder. It eats only the leaves of mulberry trees. Because the silkworm has become domesticated so that its cocoons can be harvested to make silk fabric, it no longer lives in the wild, but depends on man-made habitats to survive. Life Stages Silkworms go through three life stages---larvae (white worms with large heads), pupae (spun into cocoons), and adult (white with brown spots and four wings). Adult silkworms have lost the ability to fly after centuries of human cultivation. As a result, they are unable to exist in their natural habitat.
- 3. LIFE STAGES OF A SILK WORM
- 4. Structural construction of Silkworm Cocoons According to the Center for Insect Science Education at the University of Arizona, one silkworm cocoon is made up of a single strand that is over 900 meters---almost 3,000 feet---long. It takes about 300 cocoons to make one pound of silk. The cocoons are heated in ovens, boiled or dried in the hot sun to kill the worm inside. Then, the cocoons are carefully unraveled and combined with strands from other cocoons to make a single silk thread
- 5. Construction Details Van der Kloot and Williams(1953) studied the building of this cocoon in a laboratory environment consisting of a rod stuck into a platform, and observed that only two basic movements were used to complete the outer cocoon envelop. Caterpillar started the cocoon by standing on the dowel head-up and with its posterior and near the base. then, after stretching up and attaching a thread to the dowel, it bent its body out to the side and down ,drawing a silk thread from the spinnerets; when its head touched the furthest point on the base that the caterpillar could reach, the thread was attached. this movement is called stretch-bend movement, and repetition of it led to the formation of a silken cone. The base of the cocoon is created by the second movement, which is performed when the animal turns round to face downwards on the dowel. in this position it constructed rather flattened sheet of silk by a back and forth swinging movement,but never bent back up the dowel. this movement was named swing-swing movement
- 6. Technique of making cocoons (stretch-bend movement)
- 7. Cocoon lining behaviour Cross section of a cocoon
- 8. THE END