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Mainly the rearing of silkworm is of two types. Here, Chawki’ refers to the young silk worms reared from hatching to 2 ndmoult stage. Early age rearing/ Chawki rearing The life cycle of silkworm consists of egg, larva, pupa (cocoon) and adult stages. Leaves – It was selected and feed on the 3 rd or 4 th from the top leaves, next 6 th to 7 th leaves are used to rear the young age worms, size of leaves must be chopped to 0.5 sq.cm to 1 sq.cm. 37 Full PDFs related to this paper. 2. The experiment was conducted using a multi X Bi silkworm hybrid, PM × CSR 2. Rearing Process of Silkworm: Step # 6. Effects of sinusoidal magnetic fields on chawki silkworm rearing have been studied. High Humid season: Open type of Shelf Rearing. Silkworm rearing involves the following steps: 1. The silkworm rearing programme in a farm is determined by the following considerations. Early age rearing 3B. Similarly, larvae reared with chawki method were found higher shell weight (1.5g) than direct method of rearing. Silkworm Pests 114 8. silkworm in direct and chawki rearing method were 10.5 and 12.0g, respectively (Fig. Conditions of mulberry growth, yield of mulberry leaf, quality of mulberry leaves and time of availability. The life cycle of a silkworm will have to go through five instars. Muga silk worm is multivoltine and 5-6 crops are raised in a year out of which two commercial crops (Jethua: May- June and katia: October- November), two pre-seed crops (Jarua: December- January and Aherua: June- July) and two seed crops (Chotua: February- March and Bhodia: July- August. Mechanical capturing of predators in the rearing field throughout rearing period and specially at the time of incidence of the predator by using sticky country made adhesive (lassa) glued to bamboo pole or other sticks. It is your choice to choose until which stage you want to rear your silkworm. Chawki Rearing Centres (CRCs) act as backbone of silkworm rearing activity. Silkworm Diseases 81 7. Economis 126 Reference Books 138 Glossary 140 CONTENTS 4. Commercial Chawki Rearing Centres. Provide 3-4 times feeding with tender leaves of 0.5-2 cm cut pieces during 1st stage. CHAWKI REARING. During this time, the worm does not take any food, wriggles out of the old skin and comes out with a new, soft skin. The study was conducted in 100 CRCs of six traditional sericultural districts of Karnataka with the objective of understanding the constraints faced by CRC entrepreneurs in adoption of recommended technologies. Highly fluctuating climatic condition of Eastern India stands in the way of expansion of sericulture inspite of luxuriant growth of mulberry for its fertile soil and adequate rainfall. Disease-free layings were reared from hatching to cocooning and by subjecting first and second instar to three magnetic field frequencies: 0.1, 1.0, and 10 Hz at 1500 nT, pp, for six days at six hours per day. Infected eggs can be disinfected by cleaning their surfaces prior to hatching. Care is followed upto 3rd instar. These larvae constitute the chawki and rearing these is known as chawki rearing. Late age rearing Rearing of fourth and fifth instar worms is called as late age worm rearing. Incubation and Brushing 3. Development of Solar passive energy model rearing house for silkworm rearing. silkworm rearing for not less than one month in a sericulture institution under State or Central Silk Board or any other recognized institution. Download Full PDF Package. (Print): 0975-1130 ISSN No. ISSN No. Munis Entomology & Zoology, 10 (2): 402-406] ABSTRACT: In muga culture, high mortality of larvae occurred particularly in the early stage of rearing to the tune of 15 to 25 %. Effects of sinusoidal magnetic fields on chawki silkworm rearing have been studied. The leaves are … If grasserie is observed in the chawki stage (the first stages of silkworm rearing), then the chawki larvae must have been infected while hatching. Spacing: 6 - 54 sq.ft./100 dfls For qualitative and quantitative improvement in cocoon production, scientific method of young instar (Chawki) silkworm rearing is important. From hatching to its full-grown stage, the silk worms pass through five instars and the worms up to... Late age rearing. Use of nylon net (mesh size 2 mm) especially during chawki rearing to prevent silkworm from the attack of predators. Effects of sinusoidal magnetic fields on chawki silkworm rearing have been studied. A short summary of this paper. Hence, chawki is the most crucial period of silkworm rearing that demands optimum temperature and humidity, hygienic conditions, quality tender leaf, good rearing facilities and above all technical skills. Though . During this long duration the larvae grow in size and enter cocoon (pupal) stage. Provide leaves @ 5 kg/100 dfls for 1st and 18 kg/100 dfls for 2nd instar worms. The experiment was conducted using a multi X Bi silkworm hybrid, PM x CSR 2. Ijariit Journal. This stage is the real feeding stage. The duration of larval period form hatching to spinning is about 26 days. formaldehyde gas up to 1 %, 0.02% of . late age rearing 3B. The improved bivoltine hybrids namely, CSR2 x CSR4 and double hybrid (Krishnaraja) are recommended... Chawki rearing. sulphur. Title: PowerPoint Presentation Author: neha pahuja Last modified by: Lokesh Created Date: 1/1/1601 12:00:00 AM Document presentation format: On-screen … Newly hatched larvae are carefully transferred on chopped succulent mulberry leaves. Hence, chawki is the most crucial period of silkworm rearing that demands optimum temperature and humidity, hygienic conditions, quality tender leaf, good rearing facilities and above all technical skills. ... Chawki rearing. Further processing of the eggs depends upon whether they are of the diapausing or … This disease develops faster in early instar rearing. The business of rearing silkworm or silkworm rearing is known as the silkworm farming as in this business, the growing of silkworm is included. Young age silkworm rearing is also called as a Chawki rearing, here in a tray of 120 x 90 cm size, 20 dfls are brushed and reared up to the second stage. Download PDF. Spinning and Mounting 65 6. Chawki rearing leads to a prospective cocoon crop. Distribute the worms uniformly in the trays. During 2nd stage, cut the leaf into 2-4 sq. SeriNutrid-A Balanced Nutrient Diet for Silkworm (Bombyx mori L) Chawki Rearing . SILKWORM REARING TECHNOLOGIES ... Wrap up Method of Chawki Rearing Cleaning of Chawki bed by Rolling of Rearing bed Nutrid - Semisysnthetic diet for Young Age Silkworms Chawki Transportation Frame Shoot Rearing Cool Guard for heat reduction in late age silkworm rearing houses Standard Rearing Schedule for CSR2xCSR4 and BL24xNB4D2 hybrids Sampoorna - A Phytoecdysteroid for … Despite the fact, there were hardly any CRCs operating in Mysore district until 2006. INTRODUCTION Silkworm eggs are of two types i.e. Week 4 Modules : 11.Cellular and mass rearing of silkworm/ 12.Cocoon formation/ 13.Cocoon spinning Devices/ 14.Cocoon harvesting process . (Online): 2249-3239 Impact of Integrated Chawki Rearing Technology on Cocoon Production of Muga Silkworm, Antheraea assamensis Helfer D. … rearing training improved their knowledge and adoption level in young silkworm rearing technologies than the mulberry chawki technologies. dioxide and 0.1 % ammonia, in the air in rearing room. The safe limit for silkworm rearing is 1 to 2% of CO. 2 . Rearing of silkworms 3A. Impact of integrated chawki rearing technology on cocoon production in Muga Silkworm Antheraea Assamensis Helfer. Late age Rearing 41 4. Through pilot survey, 30 constraints were identified and they were ranked based on Garrett score. 2). Feed the silkworm with nutritious and succulent leaf. Caring during Moulting: In commercial races of silkworm, moulting occurs four times, lasting for 15-30 hours. If the chawki worms are not reared properly, the later stages will result in crop losses. Download. Disease-free layings were reared from hatching to cocooning and by subjecting first and second instar to three magnetic field frequencies: 0.1, 1.0, and 10 Hz at 1500 nT, pp, for six days at six hours per day. 1. Muga Silkworm Rearing Technology. Infections can occur because of improper hygiene in the chawki rearing house. If the chawki worms are not reared properly, the later stages will result in crop losses. These worms require less humidity and preferable low temperature. Silk is made from natural fibers secreted by silkworms. Silkworm rearing Silkworm hybrid. With this background, KVK Mysore introduced Chawki Rearing Centers in a project Among these four stages, larval stage is the only feeding and active stage. SeriNutrid-A Balanced Nutrient Diet for Silkworm (Bombyx mori L) Chawki Rearing. A season specific silkworm rearing technology suitable for agro-climatic condition of West Bengal has been developed. Here worms are reared upto third moult and distributed to the rearers for late age rearing. Types of Insect. Further the results indicated that Andhra Pradesh CRC owners should be focused on the importance of incubation and facilities to be improved to conduct incubation at their chawki rearing centres. Silkworm Rearing Types: Depending on the age of the silkworm, the silkworm rearings are classified into two types. Types of Rearing: Rearing of silkworm is done in various methods in different areas. Chawki Rearing 11 3. READ PAPER. The experiment was conducted using a multi X Bi silkworm hybrid, PM x CSR 2. This paper. The size of leaves and the spacing of the rearing bed are maintained strictly to get best possible result in rearing. If the chawki worms are not reared properly, the later stages will result in crop losses. Silkworm Rearing. To prevent drying of leaves and to maintain the required humidity in the rearing bed, wet foam pads and paraffin paper covering are provided YOUNG AGE SILKWORM (CHAWKI) REARING In a tray of 120 cm x 90 cm x 105 cm size, 20 dfls are brushed and reared upto second stage. Recommendation For Chawki Rearing: Method of Rearing: Low Humid Season: Box rearing . Chawki means the first two stages of silkworm rearing. Week 5 Modules : 15.Separation of different types of cocoons/ 16.Cocoon harvesting and marketing/ 17.Economics of chawki … Effective Rate of Rearing (ERR) 57 5. Hence, it is the most crucial period of silkworm rearing. Availability of labour for leaf harvesting and rearing of silkworms. Chawki rearing leads to a prospective cocoon crop. hibernating and non-hibernating eggs. 1.1. Rearing of Mulberry silkworm. Silkworm rearing is an extensive month-long exercise starting from egg stage and terminating in adults laying eggs and dying their natural death. This result showing that all the silkworms fed with chawki leaves observed 36.4% higher as shell weight as compared to direct method. Rearing of Mulberry Silkworm Rearing house (for 200-250dfls.) The present paper examines the impact of Newly hatched larvae are carefully transferred on chopped succulent mulberry leaves. During this course, they pass through five larval instars intervened by four moults, cocoon and pupal stage. Chawki means the first two stages of silkworm rearing. The quality of these chawki worms is the crux of successful silkworm rearing. 3. The size of leaves and the spacing of the rearing bed are maintained strictly to get best possible result in rearing. Basically, silkworm (Bombyx mori) is a major source of fabulous mulberry silk production of the sericulture industry. Selection of leaves From brushing to the end of second age, the larvae are fed with tender leaves. Methods of late age rearing. Care is followed upto 3 rd instar. Commercial Chawki Rearing Centres. Disinfection 2. Methods of late age rearing . a. Chawki Rearing: Rearing of young age silk worms is called Chawki rearing. Week 3 Modules : 7.Young age silkworm/ 8.Importance of chawki rearing centers/ 9.Bed cleaning and spacing/ 10.Late age silkworm rearing. it is less important to ventilate the room during younger stages, care should be taken to remove paraffin cover and keep the rearing bed open, before each feed, for adequate period.

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