Artificial spawning of Esox lucius (Pike), culturing fingerling size fish, providing Bio-normative
The research project was implemented to obtain bio-normative of artificial spawning of Esox lucius and rear fries until fingerling size in earthen ponds. The artificial spawning occured in 4 stages, totally 96 brooders (32 females and 64 males) were used for the experiments. The pituitary gland hormone of common carp was injected at 4-7 mg per kg of body weight in each dose to the spawner females. The water temperature during spawning was 8-150C and the time of artificial spawning started from 4 of February to 20 of March. The maximum weight of brooder was 4 kg and the minimum 0.75 kg; the oldest female fish brooder was 6 years old and the male 5 years; the minimum age for both sexes was three years. The spawning took place both by natural state in earthen ponds and also by eggs extraction and fertilization. The quantity of eggs extracted from female spawner composed between 10-20 percent of the body weight. There was no significant differences between one and two step hormone injections. The injected female brooder was ready for artificial spawning 48-74 hours later. Mean incubation period lasted 120 degree days and yolk sac absorption lasted 160-180 degree days. The eggs stickiness was rather high and the rate of fertilization fluctuated between 45-85%. One gram dry eggs contain 90-150 ovum with 1.5-2 mm diameter, and swelled eggs were 70-85 pieces with 2.5-3.5 mm diameter. Absolute, relative and working fecundity calculated 22400-112000, 19760-36920and 5200-67400 eggs respectively. Larvae feeding, after yolk sac absorption, was performed with a solution of dry milk and soya bean juice. The feeding first was conducted with soya bean juice and Artemia nauplius in earthen ponds. After wards the natural productions of the pond, having been enriched with chicken manure, were used. The survival rate, from larvae to fingerling size, was 20-22% during 50 days culture period. During this time the fly grew to 7.4 gr with 8.5 cm length, in average.
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Format: | Journal Contribution biblioteca |
Language: | Persian |
Published: |
1999
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Subjects: | Spawning, Esox lucius, Pike, Fingerling, Size, Fish, Bio - normative, Brooders, Pituitary gland, Hormone, Carp, Temperature, Weight, Female, Male, Sex, Eggs, Fertilization, Fecundity, Artemia nauplius, |
Online Access: | http://hdl.handle.net/1834/12643 |
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dig-aquadocs-1834-126432021-05-19T06:45:08Z Artificial spawning of Esox lucius (Pike), culturing fingerling size fish, providing Bio-normative Ramin, M. Spawning Esox lucius Pike Fingerling Size Fish Bio - normative Brooders Pituitary gland Hormone Carp Temperature Weight Female Male Sex Eggs Fertilization Fecundity Artemia nauplius The research project was implemented to obtain bio-normative of artificial spawning of Esox lucius and rear fries until fingerling size in earthen ponds. The artificial spawning occured in 4 stages, totally 96 brooders (32 females and 64 males) were used for the experiments. The pituitary gland hormone of common carp was injected at 4-7 mg per kg of body weight in each dose to the spawner females. The water temperature during spawning was 8-150C and the time of artificial spawning started from 4 of February to 20 of March. The maximum weight of brooder was 4 kg and the minimum 0.75 kg; the oldest female fish brooder was 6 years old and the male 5 years; the minimum age for both sexes was three years. The spawning took place both by natural state in earthen ponds and also by eggs extraction and fertilization. The quantity of eggs extracted from female spawner composed between 10-20 percent of the body weight. There was no significant differences between one and two step hormone injections. The injected female brooder was ready for artificial spawning 48-74 hours later. Mean incubation period lasted 120 degree days and yolk sac absorption lasted 160-180 degree days. The eggs stickiness was rather high and the rate of fertilization fluctuated between 45-85%. One gram dry eggs contain 90-150 ovum with 1.5-2 mm diameter, and swelled eggs were 70-85 pieces with 2.5-3.5 mm diameter. Absolute, relative and working fecundity calculated 22400-112000, 19760-36920and 5200-67400 eggs respectively. Larvae feeding, after yolk sac absorption, was performed with a solution of dry milk and soya bean juice. The feeding first was conducted with soya bean juice and Artemia nauplius in earthen ponds. After wards the natural productions of the pond, having been enriched with chicken manure, were used. The survival rate, from larvae to fingerling size, was 20-22% during 50 days culture period. During this time the fly grew to 7.4 gr with 8.5 cm length, in average. Published 2018-04-25T19:38:25Z 2018-04-25T19:38:25Z 1999 Journal Contribution Refereed 1026-1354 http://hdl.handle.net/1834/12643 fa http://isfj.areo.ir/ pp.49-58 Iran |
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Spawning Esox lucius Pike Fingerling Size Fish Bio - normative Brooders Pituitary gland Hormone Carp Temperature Weight Female Male Sex Eggs Fertilization Fecundity Artemia nauplius Spawning Esox lucius Pike Fingerling Size Fish Bio - normative Brooders Pituitary gland Hormone Carp Temperature Weight Female Male Sex Eggs Fertilization Fecundity Artemia nauplius |
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Spawning Esox lucius Pike Fingerling Size Fish Bio - normative Brooders Pituitary gland Hormone Carp Temperature Weight Female Male Sex Eggs Fertilization Fecundity Artemia nauplius Spawning Esox lucius Pike Fingerling Size Fish Bio - normative Brooders Pituitary gland Hormone Carp Temperature Weight Female Male Sex Eggs Fertilization Fecundity Artemia nauplius Ramin, M. Artificial spawning of Esox lucius (Pike), culturing fingerling size fish, providing Bio-normative |
description |
The research project was implemented to obtain bio-normative of artificial spawning of Esox lucius and rear fries until fingerling size in earthen ponds. The artificial spawning occured in 4 stages, totally 96 brooders (32 females and 64 males) were used for the experiments. The pituitary gland hormone of common carp was injected at 4-7 mg per kg of body weight in each dose to the spawner females. The water temperature during spawning was 8-150C and the time of artificial spawning started from 4 of February to 20 of March. The maximum weight of brooder was 4 kg and the minimum 0.75 kg; the oldest female fish brooder was 6 years old and the male 5 years; the minimum age for both sexes was three years. The spawning took place both by natural state in earthen ponds and also by eggs extraction and fertilization. The quantity of eggs extracted from female spawner composed between 10-20 percent of the body weight. There was no significant differences between one and two step hormone injections. The injected female brooder was ready for artificial spawning 48-74 hours later. Mean incubation period lasted 120 degree days and yolk sac absorption lasted 160-180 degree days. The eggs stickiness was rather high and the rate of fertilization fluctuated between 45-85%. One gram dry eggs contain 90-150 ovum with 1.5-2 mm diameter, and swelled eggs were 70-85 pieces with 2.5-3.5 mm diameter. Absolute, relative and working fecundity calculated 22400-112000, 19760-36920and 5200-67400 eggs respectively. Larvae feeding, after yolk sac absorption, was performed with a solution of dry milk and soya bean juice. The feeding first was conducted with soya bean juice and Artemia nauplius in earthen ponds. After wards the natural productions of the pond, having been enriched with chicken manure, were used. The survival rate, from larvae to fingerling size, was 20-22% during 50 days culture period. During this time the fly grew to 7.4 gr with 8.5 cm length, in average. |
format |
Journal Contribution |
topic_facet |
Spawning Esox lucius Pike Fingerling Size Fish Bio - normative Brooders Pituitary gland Hormone Carp Temperature Weight Female Male Sex Eggs Fertilization Fecundity Artemia nauplius |
author |
Ramin, M. |
author_facet |
Ramin, M. |
author_sort |
Ramin, M. |
title |
Artificial spawning of Esox lucius (Pike), culturing fingerling size fish, providing Bio-normative |
title_short |
Artificial spawning of Esox lucius (Pike), culturing fingerling size fish, providing Bio-normative |
title_full |
Artificial spawning of Esox lucius (Pike), culturing fingerling size fish, providing Bio-normative |
title_fullStr |
Artificial spawning of Esox lucius (Pike), culturing fingerling size fish, providing Bio-normative |
title_full_unstemmed |
Artificial spawning of Esox lucius (Pike), culturing fingerling size fish, providing Bio-normative |
title_sort |
artificial spawning of esox lucius (pike), culturing fingerling size fish, providing bio-normative |
publishDate |
1999 |
url |
http://hdl.handle.net/1834/12643 |
work_keys_str_mv |
AT raminm artificialspawningofesoxluciuspikeculturingfingerlingsizefishprovidingbionormative |
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1756076291997564928 |