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Description
| - Female northern whitefish were treated with salmon [D-Arg(6)Pro(9)Net]-sGnRHa emulsified in Freund ' s incomplete adjuvant as a sustained release treatment (sGnRHa-FIA) or with [D-Arg(6)Pro(9)Net]-sGnRHa dissolved in physiological saline as acute release treatment (sGnRHa-PS). Females in four experimental groups (A, B, C, D) and one control group (E) were injected intraperitoneally as follows: A and B - sGnRHa-FIA at doses of 50 and 25 mu gkg(-1), respectively; C - double injection (DI) of sGnRHa-PS at 25 mu gkg(-1) administered 3days apart; D - single injection (SI) of sGnRHa-PS at 25 mu gkg(-1); and E - control group receiving a 1:1 mixture of FIA and physiological saline. All treatments induced and synchronized ovulation. Mean time to ovulation was significantly reduced (P{0.05) in GnRHa-treated groups compared with control. Hormone treatments did not affect the relative fecundity. Slight differences were found in ovarian fluid pH between group A and D (P{0.05). Except for group C, egg size was significantly reduced (P{0.01) in hormonally synchronized groups compared with the control. Survival to the eyed stage of eggs from females in groups A, B and C was significantly lower (P{0.01) than in groups D and E. Per cent hatched alevins was lower (P{0.01) in groups A, B and C than in groups D and E. We conclude that synchronization of ovulation in northern whitefish can be induced by a single acute injection of [D-Arg(6)Pro(9)NEt]-sGnRHa at 25 mu gkg(-1) BW if given near the natural spawning time determined by water temperature below 2 degrees C.
- Female northern whitefish were treated with salmon [D-Arg(6)Pro(9)Net]-sGnRHa emulsified in Freund ' s incomplete adjuvant as a sustained release treatment (sGnRHa-FIA) or with [D-Arg(6)Pro(9)Net]-sGnRHa dissolved in physiological saline as acute release treatment (sGnRHa-PS). Females in four experimental groups (A, B, C, D) and one control group (E) were injected intraperitoneally as follows: A and B - sGnRHa-FIA at doses of 50 and 25 mu gkg(-1), respectively; C - double injection (DI) of sGnRHa-PS at 25 mu gkg(-1) administered 3days apart; D - single injection (SI) of sGnRHa-PS at 25 mu gkg(-1); and E - control group receiving a 1:1 mixture of FIA and physiological saline. All treatments induced and synchronized ovulation. Mean time to ovulation was significantly reduced (P{0.05) in GnRHa-treated groups compared with control. Hormone treatments did not affect the relative fecundity. Slight differences were found in ovarian fluid pH between group A and D (P{0.05). Except for group C, egg size was significantly reduced (P{0.01) in hormonally synchronized groups compared with the control. Survival to the eyed stage of eggs from females in groups A, B and C was significantly lower (P{0.01) than in groups D and E. Per cent hatched alevins was lower (P{0.01) in groups A, B and C than in groups D and E. We conclude that synchronization of ovulation in northern whitefish can be induced by a single acute injection of [D-Arg(6)Pro(9)NEt]-sGnRHa at 25 mu gkg(-1) BW if given near the natural spawning time determined by water temperature below 2 degrees C. (en)
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Title
| - Synchronization of ovulation in cultured northern whitefish (Coregonus peled, Gmelin 1788) using [D-Arg(6)Pro(9)Net]-sGnRH analogue and its effect on egg quality
- Synchronization of ovulation in cultured northern whitefish (Coregonus peled, Gmelin 1788) using [D-Arg(6)Pro(9)Net]-sGnRH analogue and its effect on egg quality (en)
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skos:prefLabel
| - Synchronization of ovulation in cultured northern whitefish (Coregonus peled, Gmelin 1788) using [D-Arg(6)Pro(9)Net]-sGnRH analogue and its effect on egg quality
- Synchronization of ovulation in cultured northern whitefish (Coregonus peled, Gmelin 1788) using [D-Arg(6)Pro(9)Net]-sGnRH analogue and its effect on egg quality (en)
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skos:notation
| - RIV/60076658:12520/14:43886912!RIV15-MZE-12520___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(ED2.1.00/01.0024), P(ME10126), P(QH71305), P(QH91310), S
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/60076658:12520/14:43886912
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - induced ovulation; egg quality; [D-Arg6Pro9Net]-sGnRHa; Coregonus peled; Freund ' s incomplete adjuvant (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Kouřil, Jan
- Švinger, Viktor William
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http://linked.open...ain/vavai/riv/wos
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issn
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number of pages
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http://bibframe.org/vocab/doi
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http://localhost/t...ganizacniJednotka
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