Growth Attributes of Eco Races of Eri Silkworm, Philosamia Ricini Donovan in the Western Zone Conditions of Tamil Nadu

One of the most economic exploitation, widely cultivated, and financially viable non-mulberry silkworms is eri silkworm (Philosamia ricini). The feeds that consume have a significant impact on their yield silk production. A study was conducted to assess growth characteristics eco races in circumstances western region Tamil Nadu. Central Muga Eri Research Institute Jorhat, Assam provided silkworm. Three replications Completely Randomized Design (CRD) were used set up treatments. By feeding worms with castor leaves cellular rearing method, silkworm, specifically larval parameter cocoon parameter, examined. Among comparison standard F1 hybrid, race Jonai recorded maximum attributes such as weight (7.09 g), (3.93 shell (0.66 ratio, ERR (16.78 %) which par hybrid followed by Khanapara Titabar. least observed Barpathar Adogiri. This reveals among ten performed well zone condition Nadu it can be commercially reared alternative Commercial breed.