Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/91278
Type of publication: Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Žibienė, Gražina;Žibas, Alvydas;Švirinienė, Laima
Title: The Effects of Tannic Acid on the Effectiveness of Egg Fertilization and Removing Carp Egg Adhesiveness
Is part of: Rural Development 2017 [elektroninis išteklius]: Bioeconomy Challenges : The 8th International Scientific Conference, 23-24th November, 2017, Aleksandras Stulginskis University : Abstracts Book. Akademija : Aleksandras Stulginskis University, 2017
Extent: p. 218-219
Date: 2017
Note: Puslapiai nurodyti pagal pataisytą leidinį. Leidinyje nurodyta klaidinga autorės pavardė Laima Širinienė
Keywords: Fertilization;adhesiveness;tannic acid;common carp
ISBN: 9786094491238
Abstract: Egg adhesiveness is one of the major problems in carp artificial breeding. The appropriate elimination of egg adhesiveness impacts the effectiveness of the breeding. This article discusses two used methods of carp egg adhesiveness removal: tannic acid+water and milk+water+salt solutions. Milk, water and salt solution was based on the following proportions: 1 litre of milk + 7 litres of water +50g of NaCl. Adhesiveness is removed from fertilized eggs in bowls by mixing them with geese feathers for no shorter than 60 minutes. The tannic acid solution was prepared by mixing 7 grams of tannic acid powder with 5 litres of water. 1 litre of solution is immediately poured into a bowl with fertilized eggs. Adhesiveness is removed from fertilized eggs in bowls by intensively mixing them for 10 minutes. After fertilization and removal of adhesiveness, the eggs were transferred into Weiss jars. The results showed that during the process of incubation, 3.7 million eggs were fertilized; out of them 1.6 million were rid of adhesiveness by milk solution, 2.1 – by tannic solution. It is plausible that unfavourable environmental conditions influenced the low egg vitality. 750 000 (47%) carp larvae hatched from milk solution treated eggs, while 800 000 (38%) of larvae hatched from the eggs treated with tannic solution
Internet: http://www.ruraldevelopment.lt/doc/SANTRAUKOS_%20GERAS.pdf
http://www.ruraldevelopment.lt/doc/SANTRAUKOS_%20GERAS.pdf
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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