chawki rearing of silkworm
A season specific silkworm rearing technology suitable for agro-climatic condition of West Bengal has been developed. Effects of sinusoidal magnetic fields on chawki silkworm rearing have been studied. The silkworm rearing programme in a farm is determined by the following considerations. Silkworm Rearing Types: Depending on the age of the silkworm, the silkworm rearings are classified into two types. Recommendation For Chawki Rearing: Method of Rearing: Low Humid Season: Box rearing . The safe limit for silkworm rearing is 1 to 2% of CO. 2 . 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. During this course, they pass through five larval instars intervened by four moults, cocoon and pupal stage. INTRODUCTION Silkworm eggs are of two types i.e. Early age rearing/ Chawki rearing The life cycle of silkworm consists of egg, larva, pupa (cocoon) and adult stages. If the chawki worms are not reared properly, the later stages will result in crop losses. Spacing: 6 - 54 sq.ft./100 dfls Silkworm Diseases 81 7. Methods of late age rearing . Commercial Chawki Rearing Centres. 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. Rearing of Mulberry silkworm. Week 3 Modules : 7.Young age silkworm/ 8.Importance of chawki rearing centers/ 9.Bed cleaning and spacing/ 10.Late age silkworm rearing. These worms require less humidity and preferable low temperature. 2. Care is followed upto 3 rd instar. The leaves are … 1.1. Here, Chawki’ refers to the young silk worms reared from hatching to 2 ndmoult stage. It is your choice to choose until which stage you want to rear your silkworm. Early age rearing 3B. Mainly the rearing of silkworm is of two types. The improved bivoltine hybrids namely, CSR2 x CSR4 and double hybrid (Krishnaraja) are recommended... Chawki 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. The duration of larval period form hatching to spinning is about 26 days. Chawki means the first two stages of silkworm rearing. sulphur. The experiment was conducted using a multi X Bi silkworm hybrid, PM x CSR 2. silkworm rearing for not less than one month in a sericulture institution under State or Central Silk Board or any other recognized institution. For qualitative and quantitative improvement in cocoon production, scientific method of young instar (Chawki) silkworm rearing is important. Newly hatched larvae are carefully transferred on chopped succulent mulberry leaves. From hatching to its full-grown stage, the silk worms pass through five instars and the worms up to... Late age rearing. Conditions of mulberry growth, yield of mulberry leaf, quality of mulberry leaves and time of availability. 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 … Effects of sinusoidal magnetic fields on chawki silkworm rearing have been studied. Muga Silkworm Rearing Technology. hibernating and non-hibernating eggs. Selection of leaves From brushing to the end of second age, the larvae are fed with tender leaves. 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. Development of Solar passive energy model rearing house for silkworm rearing. Through pilot survey, 30 constraints were identified and they were ranked based on Garrett score. Though . Here worms are reared upto third moult and distributed to the rearers for late age rearing. Chawki means the first two stages of silkworm rearing. This stage is the real feeding stage. Chawki rearing leads to a prospective cocoon crop. late age rearing 3B. CHAWKI REARING. Ijariit Journal. Chawki Rearing 11 3. Disinfection 2. Late age rearing Rearing of fourth and fifth instar worms is called as late age worm rearing. The size of leaves and the spacing of the rearing bed are maintained strictly to get best possible result in rearing. Silkworm rearing Silkworm hybrid. dioxide and 0.1 % ammonia, in the air in rearing room. Silkworm rearing is an extensive month-long exercise starting from egg stage and terminating in adults laying eggs and dying their natural death. 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 %. Basically, silkworm (Bombyx mori) is a major source of fabulous mulberry silk production of the sericulture industry. This paper. (Online): 2249-3239 Impact of Integrated Chawki Rearing Technology on Cocoon Production of Muga Silkworm, Antheraea assamensis Helfer D. … 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. 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. Spinning and Mounting 65 6. Week 5 Modules : 15.Separation of different types of cocoons/ 16.Cocoon harvesting and marketing/ 17.Economics of chawki … Types of Insect. 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. READ PAPER. Download Full PDF Package. Silkworm 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. Incubation and Brushing 3. Methods of late age rearing. 3. Infections can occur because of improper hygiene in the chawki rearing house. During this long duration the larvae grow in size and enter cocoon (pupal) stage. Rearing Process of Silkworm: Step # 6. 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. Despite the fact, there were hardly any CRCs operating in Mysore district until 2006. Impact of integrated chawki rearing technology on cocoon production in Muga Silkworm Antheraea Assamensis Helfer. rearing training improved their knowledge and adoption level in young silkworm rearing technologies than the mulberry chawki technologies. Chawki Rearing Centres (CRCs) act as backbone of silkworm rearing activity. SeriNutrid-A Balanced Nutrient Diet for Silkworm (Bombyx mori L) Chawki Rearing . The size of leaves and the spacing of the rearing bed are maintained strictly to get best possible result in rearing. Availability of labour for leaf harvesting and rearing of silkworms. Newly hatched larvae are carefully transferred on chopped succulent mulberry leaves. 1. Similarly, larvae reared with chawki method were found higher shell weight (1.5g) than direct method of rearing. Effects of sinusoidal magnetic fields on chawki silkworm rearing have been studied. Infected eggs can be disinfected by cleaning their surfaces prior to hatching. 37 Full PDFs related to this paper. These larvae constitute the chawki and rearing these is known as chawki rearing. 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. Title: PowerPoint Presentation Author: neha pahuja Last modified by: Lokesh Created Date: 1/1/1601 12:00:00 AM Document presentation format: On-screen … High Humid season: Open type of Shelf Rearing. If grasserie is observed in the chawki stage (the first stages of silkworm rearing), then the chawki larvae must have been infected while hatching. Rearing of silkworms 3A. Download PDF. The present paper examines the impact of Week 4 Modules : 11.Cellular and mass rearing of silkworm/ 12.Cocoon formation/ 13.Cocoon spinning Devices/ 14.Cocoon harvesting process . Commercial Chawki Rearing Centres. The life cycle of a silkworm will have to go through five instars. Economis 126 Reference Books 138 Glossary 140 CONTENTS 4. Chawki rearing leads to a prospective cocoon crop. Feed the silkworm with nutritious and succulent leaf. Effective Rate of Rearing (ERR) 57 5. Use of nylon net (mesh size 2 mm) especially during chawki rearing to prevent silkworm from the attack of predators. The experiment was conducted using a multi X Bi silkworm hybrid, PM x CSR 2. Further processing of the eggs depends upon whether they are of the diapausing or … Rearing of Mulberry Silkworm Rearing house (for 200-250dfls.) (Print): 0975-1130 ISSN No. Provide 3-4 times feeding with tender leaves of 0.5-2 cm cut pieces during 1st stage. Silkworm rearing involves the following steps: 1. 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. Late age Rearing 41 4. Among these four stages, larval stage is the only feeding and active stage. ISSN No. Types of Rearing: Rearing of silkworm is done in various methods in different areas. If the chawki worms are not reared properly, the later stages will result in crop losses. 2). 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. During 2nd stage, cut the leaf into 2-4 sq. This result showing that all the silkworms fed with chawki leaves observed 36.4% higher as shell weight as compared to direct method. Caring during Moulting: In commercial races of silkworm, moulting occurs four times, lasting for 15-30 hours. Distribute the worms uniformly in the trays. Provide leaves @ 5 kg/100 dfls for 1st and 18 kg/100 dfls for 2nd instar worms. 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. ... Chawki rearing. With this background, KVK Mysore introduced Chawki Rearing Centers in a project This disease develops faster in early instar rearing. A short summary of this paper. Hence, it is the most crucial period of silkworm rearing. silkworm in direct and chawki rearing method were 10.5 and 12.0g, respectively (Fig. SeriNutrid-A Balanced Nutrient Diet for Silkworm (Bombyx mori L) Chawki Rearing. Silkworm Pests 114 8. 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. The experiment was conducted using a multi X Bi silkworm hybrid, PM × CSR 2. formaldehyde gas up to 1 %, 0.02% of . a. Chawki Rearing: Rearing of young age silk worms is called Chawki rearing. If the chawki worms are not reared properly, the later stages will result in crop losses. 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. Silk is made from natural fibers secreted by silkworms. Download. The quality of these chawki worms is the crux of successful silkworm rearing. Care is followed upto 3rd instar.