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首页> 外文期刊>Advances in limnology >The effects of Gonazon?, a commercially available GnRH analogue, on induction of ovulation and egg quality in cultured European whitefish (Coregonus lavaretus L.)
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The effects of Gonazon?, a commercially available GnRH analogue, on induction of ovulation and egg quality in cultured European whitefish (Coregonus lavaretus L.)

机译：市售GnRH类似物Gonazon？对欧洲养殖白鲑（Coregonus lavaretus L.）诱导排卵和卵质量的影响。

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Gonazon? was used to induce ovulation in cultured European whitefish. Seventy-five sexually mature whitefish females, divided into three equal groups, were used. An additional group (group 4) consisted of 154 females being used for commercial production. Control fish received an injection of vehicle. Fish in the two Gonazon treated groups (group 2 and 3) received an intraperitoneal injection of Gonazon at a dose of 16 and 32 ug/kg bwt., respectively. First ovuladons (4 out of 25) in each of the Gonazon-treated groups were detected 6 days after the injection. In total, during the first 16 days after injection, 64% of fish ovulated in group 2 and 88% in group 3. Only one fish ovulated in the control group. After 1.5 months, a total of 28, 80 and 92% of fish ovulated in groups 1, 2 and 3, respectively. Females in group 4 started to ovulate by day 16 and reached an ovulation rate of 85% by day 61. The mortality rate was 72, 20 and 8% in groups 1, 2 and 3, respectively. The mean percentage of live embryos up to the eyed stage was 64, 82, and 66.5% for groups 1, 2 and 3, respectively and 86% for the commercial production group. The results indicate that Gonazon treatment can significantly accelerate the time of ovulation as well as profoundly shorten the period of spawning. Treatment with the higher dose of Gonazon induced a 20 percentage point loss in live embryos when compared with the commercial (non-handled) fish.
机译：戈纳宗？被用来诱导养殖的欧洲白鱼排卵。使用了75个具有性成熟性的白鲑雌性动物，分为三等份。另外一组（第4组）由154名女性组成，用于商业生产。对照鱼注射了媒介物。两个Gonazon处理组（第2组和第3组）中的鱼分别以16和32 ug / kg bwt。的剂量腹膜内注射Gonazon。注射后6天，在每个经戈纳松治疗的组中均检测到第一个卵形卵（25个中的4个）。总的来说，在注射后的前16天，第2组排卵的鱼占64％，第3组排卵的鱼占88％。 1.5个月后，分别在第1、2和3组中排卵的鱼总数分别为28％，80％和92％。第4组的女性在第16天开始排卵，到第61天达到85％的排卵率。第1、2和3组的死亡率分别为72％，20％和8％。到第1组，第2组和第3组，到眼期为止的活胚胎的平均百分比分别为64％，82％和66.5％，而商业生产组的平均百分比为86％。结果表明，Gonazon处理可显着加快排卵时间，并显着缩短产卵时间。与商业（未处理）鱼相比，用高剂量的Gonazon处理可导致活胚胎损失20个百分点。

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