Intraction effects of substrate and different protein diets on the growth and reproduction of white worm (Enchytraeus albidus Henle 1837)

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Tizkar Babak; Alinezhad Soheil; Zoughi shalmani Afshar; Hafezieh Mahmoud

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Journal Paper

Paper Information

Journal: JOURNAL OF AQUACULTURE DEVELOPMENT Year:2024 | Volume:18 | Issue:1( پیاپی 47) Page(s): 1-12

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Information Journal Paper

Title

Intraction effects of substrate and different protein diets on the growth and reproduction of white worm (Enchytraeus albidus Henle 1837)

Author(s)

Tizkar Babak | Alinezhad Soheil | Zoughi shalmani Afshar | Hafezieh Mahmoud | Issue Writer Certificate

Keywords

White worm (Enchytraeus albidus )

growth substrate

diet protein

live feed

ornamental fish

Abstract

This study focuses on the interactive effects of biological substrate and diet protein reserve on the growth parameters and reproduction of white worm)Enchytraeus albidus). Two substrates including humus and loamy soil ( a mix of %70 humus and %30peat moss) were used with three diets ( with %20, %25 and %30 protein concentrations) followed by the use of 18 plastic boxes (30×20×15 cm) filled with 8cm depth of the afore mentioned soils . Upon preparing the substrate and the designated diets, a primary stock of 10 gram of the worms were released in each treatment. The worms were fed with the experimental diets for three months based on %60 of their biomass. Weight biometrics of worms in all treatments was conducted once during the course of study. At the end, calculations were made on larval number, the number of larvae with generative cycle, brood stock increment rate, the number of larvae as per each brood stock, individual brood stock weight (mg), final biomass (in grams), ultimate brood stock number and the production cost of the diet per each kilogram of worm. The results showed interactive effects on certain growth and reproductive parameters among various substrates and the nutrition diets, revealing significant interactive effects on final biomass ,brood stock increment rate, ultimate brood stock number, special coefficient No and diet production cost ( P< 0.05 ). The brood stock with generative cycle showed a rising trend with the increase in diet protein reserve (P< 0.05 ).White worms in the mixed substrate had better growth performance than those of in humus with significantly higher larval number, brood stock with generative cycle, final larval weight and weight growth coefficient (P< 0.05).

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