Host plants of Muga silkworm. Feeding . 0000004918 00000 n The rearing of the eri silkworm was done by tray rearing method. Its cocoon has loose texture and silk is not reliable, hence, this is carded and spun. Use paraffin paper and water soaked foam pad in rearing tray to maintain temperature and. Materials and Methods 20 DELs or Disease Free Layings (containing about 250 to 300 eggs/DFLs) of eri silkworm (Philosamia ricini Hutt.) The plinth area 10 m x 5 m size rearing house having tin or thatch roofing with 1.5 m varandah all around is ideal for accommodating 100 dfls for commercial silkworm rearing per crop. 0000047520 00000 n 3. Eri silk is also known as endi or errandi in India. West Bengal, Choose state and district It is an agro based industry. 0000003875 00000 n The steps are: 1. 0000008526 00000 n potentiality of tapioca for rearing of eri silkworm during autumn season in Assam. 0000049496 00000 n %%EOF were brought from Kapahtoli in Nagaon district of As-sam during October, 2014. Eri silkworm, Samia cynthia ricini Boisd. 0000007909 00000 n chaddars (wraps) for own use by these tribals. 1st and 2 nd larval instars/stages as young age, 3 rd and 4 th larval instars as medium age, 5 th larval instar as mature age Rearing of Eri Silkworm, Samia ricini (Donovan) Rearing house. Himachal On the hatching of the larvae tender leaves were given to the egg box. Ripe worms become yellowish white and start roaming for selection of site for cocoon formation. Feed the worms’ minimum 4 times a day with castor or kesseru leaves. Tripura Andhra Pradesh October are the best seasons for eri rearing. 0000045906 00000 n 0000031537 00000 n 0000049199 00000 n Pant, 1976). Eri silkworm is easy to be raised and has high cocoon yield, the cocoon fails to be continuously reeled due to a loose structure, a large part of cocoon coat and an eclosion hole. 0000038747 00000 n 0000038633 00000 n The Eri silkworm which lives upon castor, is a domesticated form, cultivated in warm damp places. ricini. 0000005423 00000 n It involves the raising of food plants for silkworm, rearing of silkworm for production of cocoons, reeling and spinning of cocoon for production of yarn etc for value added benefits such as processing and weaving. 0000000016 00000 n 0000048864 00000 n Rearing house should be well ventilated and fly proof. Bihar Singh HR, Unni BG, Neog K, Bhattacharyya M (2011) Sodium dodecyl sulfate polyacrylamide gel xref 0000046922 00000 n Kerala >Choose State The eggs were incubated at the normal room temperature. 1 st stage -1 time; 2 nd stage-2 times; 3 rd stage-3 times; 4 th stage-3 times; 5 th stage-Daily once 0000047892 00000 n Also known as Endi or Errandi, Eri is a multivoltine silk spun from open-ended cocoons, unlike other varieties of silk . Disinfect the rearing house at least 7 days before and soon after the rearing. Eri silkworm is polyphagous species and reared mostly on the leaves of Castor and Kesseru plant. 0000048453 00000 n 0 Rear maximum 300 nos. The gloss on the thread is inferior. Windows and ventilators should be kept open for proper aeration and free circulation of air. Sericulture, or silk farming, is the cultivation of silkworms to produce silk.Although there are several commercial species of silkworms, Bombyx mori (the caterpillar of the domestic silkmoth) is the most widely used and intensively studied silkworm. It is found in South-East Asia. Bed Cleaning 6. 4-5 feeding should be given per day at regular intervals. 0000055413 00000 n 0000027944 00000 n Eri. Uttrakhand Besides traditional Jali, bamboo chandraki, bamboo stripe type mountage and plastic collapsible. 0000008760 00000 n 0000011557 00000 n This ensures that as soon as the eggs are hatched, the larvae can grab onto the host plant and start feeding. These eggs are stored over a clean paper or piece of cloth. The young worms or Chawki requires special care and attention as they are very much prone to infections and vulnerable to … 0000004282 00000 n Rearing Performance of Eri-Silkworm (Samia cynthia ricini Boisduval) (Lepidoptera: Saturniidae) Fed with Different Castor (Ricinus communis L.) GenotypesKedir Shifa, Emana Getu and Waktole Sori: Abstract: Growth, development, reproduction and yield of silkworms depend on the availability and supply of preferred host plants having good agronomic and nutritional characteristics. communis) The silk is used indigenously for preparation of . Rearing can be done throughout the year. 0000005250 00000 n Orissa Brushing 3. Tapioca is also as known as Cassava is an important starchy root crops and has been grown in India for more than a century. 0000047750 00000 n 0000016810 00000 n 0000028205 00000 n The rearing performance of different eco-races of eri silkworm Philosamia riciniwas studied during autumn season of year 2006 and 2007. Fertilized Eri silkworm eggs obtained from Tosheka Textiles Ltd grainages are placed in a rearing box and castor leaf placed on top of the eggs as shown in figure 1. Join now. D. Attacus rechinii. Disinfection 2. Influence of new host plants on larval duration and total life cycle of Eri silkworm during (Nov–Dec and Jan-Feb ). Its life history resembles that of the mulberry worm. startxref 0000031606 00000 n Eri silk is made by Samia cynthia ricini which feed on leaves of castor oil plant (Ricinus communis). Samia ricini, or the Eri silkworm, is raised in India and parts of the Orient for its silk. Eri silkworm rearing method as suggested by Chowdhury (1982) was followed [7]. Disinfection before and after each rearing is considered the key for a successful cocoon harvest. New food plants for eri silkworm rearing Data provider: The Agriculture, Forestry and Fisheries Research Information Technology Center. Directional selection was undertaken with the batches reared at 42±1°C and 50±5% R.H. until the 5th generation. They chew their way through, and it can take several hours. Sprinkling. name to view SILKS, Central Silk Board, Minisitry of Textiles, Government of India, Bangalore, Silkworm Food Plants Production Technologies, Improved Varieties of Silkworm Food Plants, The plinth area 10 m x 5 m size rearing house having tin or thatch roofing with 1.5 m varandah all around. These are the Eri silkworm eggs. The farmers then keep the eggs under the accurate temperature and humidity at a clean place. 3. 0000005285 00000 n 0000020256 00000 n <> It is distributed in North-Eastern part of India, China and Japan. But most of the rearer families in these villages do not have their regular plantation of food plants. The cocoons are then washed and reboiled in fresh water for 15-30 minutes. Hatching took place after Of this only larval stage is feeding period. It is also known as endi or errandi silk. The newly hatched larvae crawl onto the leaves and start feeding. Nagaland ADVERTISEMENTS: The following points highlight the seven main steps involved in rearing process of silkworm. 0000031876 00000 n 0000010088 00000 n Jharkhand Eri silkworm is multivoltine in nature. of 5th instar worms per 3 ft x 3 ft diameter tray. Meghalaya Eri silk is the product of the domesticated silkworm, Philosamia. Typically, 300-500 eggs are obtained from one female silk moth. They are warmed to the most appropriate temperature to hatch eggs to produce larvae or caterpillar. 0000002855 00000 n Silk was believed to have first been produced in China as early as the Neolithic Period. Eri silkworm rearing at normal temperature (25±2°C; 80±5% R.H.) served as control treatment and was compared to rearing at high temperatures. This process results in a silk called Ahimsa silk. What is Chawki rearing? 0000047150 00000 n . 0000041268 00000 n Mizoram Sikkim The ones that are dark are about to hatch; in a couple of them, you can see little black spots, which are the heads of the emerging silkworms. The range of … Rearing of Silkworm: In the beginning, the female silk moth lays hundreds of eggs. 3 No. 0000048043 00000 n 0000052238 00000 n It can rear 4-5 times in a year. 0000054358 00000 n The leaves along with the larvae were . Studies on the performance of castor genotypes on rearing cocoon of eri silkworm S. CHANDRASHEKHAR AND R. GOVINDAN International Journal of Plant Protection (October, 2010), Vol. 0000010002 00000 n well, generally the silkworms pass through 5 developing phases (Instars) from their hatching to the full-developed stage. Pupae become fully matures on the 5th to 6th day of the molting. which are used for rearing of eri silkworms during the scarcity of primary host plants. It can rear 4-5 times in a year. 0000046381 00000 n 0000005970 00000 n 0000012478 00000 n Karnataka They will be a couple of days behind all the way through their life cycle. Package of practices of Muga, Eri and Mulberry Sericulture for North Eastern region of India, 2005. 0000042043 00000 n Wash the rearing houses and appliances with 5 % bleaching powder solution before rearing. Eri cocoons are loosely tied in a porous cloth and the bundle is immersed in an alkaline solution of 10-12g soap and 2-4g Soda per litre of water and bolied for an hour. Arunachal Pradesh Influence of new host plants on. Because manufacturing process of eri allows the pupae to develop into adults and only the open ended cocoons are used for turning into silk, it is also popularly known as non-violent silk. 0000025432 00000 n Mature worms are collected and put to cocooning mountages. Sarmah, Shri B.N. This region has unique distinction in the world being the only producer of all the commercial varieties of silks. Spacing 5. After proper washing the cocoon shells are dried without disturbing the fibre layer and then utilized for spinning especially in CSTRI machines. They complete their life cycle of four different metamorphosing phases, egg, larva, pupa and adult moths. In this process, the silkworms up to the second stage (stage 2) are called Chawki or young age worms. This is ideally suited for rearing young as well as late age worms. 0000033059 00000 n Feeding the Larvae 4. 0000050118 00000 n Wild silkmoths are reared on wild trees but can also be raised and bred under complete human control. 0000028364 00000 n Jammu & Kashmir The rearing is done in semi-permanent mud houses under room temperature. Bed cleaning. Twenty-six days were required in castor-tapioca combination to complete the larval development and a maximum of 28 days on the tapioca (TV 1&2) host plant… The hatching is a long process. While picking up the matured worms and rubbing in between fingers, a sound of hollowness is. difference between eri and seri silkworm. Industrial Crops and Products, 34:1439– 1446 (IF 2.469). Eri silkworms are reared indoor. 0000034220 00000 n 0000003124 00000 n 0000021796 00000 n Incubate the dfls at 24-26°C and 75-85% relative humidity. 0000032979 00000 n 0000011255 00000 n 0000014196 00000 n Ask your question. 0000015036 00000 n Uttar Pradesh Fumigate with 5% formaldehyde solution under high humid condition. 0000007672 00000 n silkworm larvae were 600, 500, 400, 300, 200 and 100 per feeding tray (60cm X 90cm size) using silkworm shelf rearing technique to evaluate the effects of population density on different larval stages eri silkworm strains. 0000006441 00000 n However, March-April and September- 0000015947 00000 n 2 : 219-224 Key words : Castor, Ricinus communis, Eri silkworm, Samia cynthia ricini Accepted : June, 2010 Apart from the marvelous mulberry silk, which is quite popular world over, there are few other … The complete process of silkworm rearing that is from hatching of eggs to the cocoon formation usually takes around 25 days to 27 days. Low cost bamboo platform rearing equipment is the best for rearing late stage worms considering the, Feed 1st instar worms on tender, 3rd and 4th instar on semi-matured and 5th instar on matured. h�b``�a``�e`c`�)c`@ �;�� KV50�6�4�pD4. 0000004943 00000 n 19 0 obj <> endobj 0000021965 00000 n These eggs (laid on a paper/cardboard sheet) are then disinfected with the help of a 2% formalin solution. 0000002170 00000 n (Lepidoptera: Saturniidae) is known to be reared in different parts of the world with diverse expectations for its silk fibre, food and biomaterials. Article Shared by. 0000027860 00000 n In sericulture, the silkworm rearing process begins with the laying of eggs by the female silk moth. The woolly white silk is often referred to as the fabric of peace when it is processed without killing the silkworm. 17. Manipur Moths leave the cocoon and then the cocoons are harvested to be spun. This … Removal of defective and low-quality cocoons should be carried out. Brush newly hatched worms on tender leaves (preferably castor) during morning hours. 0000032910 00000 n 0000001816 00000 n 0000017607 00000 n Wash hands with 2% formalin solution and then with water. 2 rearing performance of eri silkworm, Samia ricini (Donovan). Tamil Nadu 19 76 ricini, Attacus. 0000009688 00000 n Eri silkworm is multivoltine in nature. Adults are stout dark moths with dark brown white spotted and striped wings. Bombyx mori, the domestic silk moth, is an insect from the moth family Bombycidae.It is the closest relative of Bombyx mandarina, the wild silk moth.The silkworm is the larva or caterpillar of a silk moth. Chawki Rearing in Silkworm Rearing. Feeding: 4-5 feeding should be given per day at regular intervals. Punjab There are 26 eco-races of eri silkworm like Borduar, Khanapara, Kokrajhar, Titabar, Diphu, Genung, Nongpoh etc. difference between eri and seri silkworm. 3. 0000005310 00000 n Sarkar, Shri S. A. Ahmed, Dr. K. Neog, CMER&TI, Lahdoigarh. Disinfection should be carried out on bright sunny days. Dr. M.C. Assam Chhatisgarh Rearing house should be well ventilated and fly proof. Madhya Pradesh 0000002994 00000 n 0000040897 00000 n %PDF-1.5 %���� 0000013348 00000 n So, cocoon harvesting can be carried out on the 6th day after molting to get the maximum production. 0000010625 00000 n trailer 0000006832 00000 n 0000003448 00000 n that feeds mainly on castor leaves ( Ricinus. There are 26 eco-races of eri silkworm like Borduar, Khanapara, Kokrajhar, Titabar, Diphu, Genung, Nongpoh etc. 0000041698 00000 n 94 0 obj <>stream Maharashtra 0000002287 00000 n <<5B46202F8EDE9B468AC32652235F154C>]/Prev 73675>> 0000009343 00000 n 0000004579 00000 n Eri group comprises of Eri ( Samia ricini Donovan and Samia Cynthia) is widely available. 0000005534 00000 n These eggs are then sold to the silkworm farmers.