The scheme discloses a sturgeon breeding method in the technical field of sturgeon culture, including the following steps: 1. Select the parent fish with good characteristics; 1-2 years before the eggs/sperm collection, the parent fish are put into the culture pond according to sex and raised in a separate pond; the bottom of the culture pond is laid with sediment, and the sediment is covered with filter mesh and filter mesh. 2-3 CM thick pebbles were laid on top of the pebbles, submerged plants and shrimps and crabs were thrown into the culture ponds. 2. After the gonadal development of the parent fish reached stage IV, luteinizing hormone releasing hormone (LHRH) was used to induce the spawning of the parent fish. The dosage was 1.2-1.5 ug/kg for males and 2.5-3 ug/kg for females. In the incubator, flowing water is used; in the third step, the collected eggs and sperm are fertilized by artificial insemination; then the fertilized eggs are put into an incubator and hatched until the nursery is hatched. By optimizing the breeding methods of sturgeon, the hatchability and quality of sturgeon were improved.
【技术实现步骤摘要】
一种鲟鱼繁育方法
本专利技术属于鲟鱼养殖
,特别涉及一种鲟鱼繁育方法。
技术介绍
鲟鱼是指鲟形目的鱼类,鲟鱼隶属于硬骨鱼纲、辐鳍亚纲、硬鳞总目、鲟形目。鲟鱼个体大,生长快,不仅具有食用、营养、滋补、保健、药用和观赏等重要的经济价值,而且还具有重要的科学研究价值。随着鲟鱼产业的快速发展,鲟鱼人工繁育技术日趋成熟。如申请号为CN201110147872.7的中国专利技术专利公开了一种鲟鱼人工繁殖方法,但该专利技术一是采用体征观察分辨雌雄亲本,无法彻底解决亲鱼选择中雌雄亲本难于分辨问题;二是该专利在亲鱼培育中采用将亲本直接转入低温环境的方法,此方法不符合自然条件下的降温模式,同时没有说明低温培育后温度是如何升高的;三是该专利无法准确选择适龄亲本进行人工繁育。针对这种情况,申请号为“CN201410257306.5”的专利公开了“一种山区鲟鱼亲本培育及人工催产方法”,该方法着重对鲟鱼亲鱼进行区分,并对亲鱼的生长情况进行详细标记,并加强人工催产和人工授精,进而提高鲟鱼的受精率和孵化率。上述方式虽然都在一定程度上提高了鲟鱼的孵化率,但鲟鱼孵化率以及孵化出的育苗健康情况, ...
【技术保护点】
1.一种鲟鱼繁育方法,其特征在于:包括以下步骤:步骤一、选取性状优良的鲟鱼亲鱼;在进行取卵/精前1~2年,将亲鱼按性别投放到养殖池中进行分池饲养;亲鱼投放量为4~5kg/㎡;养殖池底部呈8~12°的倾角,养殖池的底部铺设有5~6CM厚的泥沙,泥沙上覆盖过滤网,过滤网上铺设2~3CM厚的鹅卵石;在养殖池中投放沉水植物和虾蟹,养殖池水深1.8~2m,溶解氧7~10mg/L;4~10月份,保持水温15~18℃,其他月份保持水温11~14℃;饲料投喂量为每天按亲鱼体重的1~1.5%;步骤二、亲鱼性腺发育达到IV期后,采用促黄体激素释放激素对亲鱼进行药物催产,用量为:雄鱼1.2~1. ...
【技术特征摘要】
1.一种鲟鱼繁育方法,其特征在于:包括以下步骤:步骤一、选取性状优良的鲟鱼亲鱼;在进行取卵/精前1~2年,将亲鱼按性别投放到养殖池中进行分池饲养;亲鱼投放量为4~5kg/㎡;养殖池底部呈8~12°的倾角,养殖池的底部铺设有5~6CM厚的泥沙,泥沙上覆盖过滤网,过滤网上铺设2~3CM厚的鹅卵石;在养殖池中投放沉水植物和虾蟹,养殖池水深1.8~2m,溶解氧7~10mg/L;4~10月份,保持水温15~18℃,其他月份保持水温11~14℃;饲料投喂量为每天按亲鱼体重的1~1.5%;步骤二、亲鱼性腺发育达到IV期后,采用促黄体激素释放激素对亲鱼进行药物催产,用量为:雄鱼1.2~1.5μg/kg,雌鱼2.5~3μg/kg;药物催产前一个月至卵细胞/精液收集完毕期间,养殖池采用流动水;步骤三、对收集的卵细胞和精子...
【专利技术属性】
技术研发人员:俞贤南,
申请(专利权)人:贵州龙源冷水渔业有限公司,
类型:发明
国别省市:贵州,52
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