Process for reproduction of grass carp

• Main Authors: STRUGULEA Oleg, CREPIS Oleg, USATÎI Adrian, TODERAŞ Ion, USATÎI Marin
• Format: Patent
• Language: English; Romanian; Russian
• Published: 28.02.2011
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; FORESTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HUNTING; NEW BREEDS OF ANIMALS; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRAPPING

The invention relates to pisciculture, in particular to a process for reproduction of grass carp.The process includes placement of reproducers in the basin and their stimulation by controlling the environmental conditions in the basin: increase of water temperature up to 22...24°C a day prior to the beginning of reproduction, creation therein of the zone of turbulent water flows at a rate of 0.3...0.5 m/s, carrying out of periodic oscillations of water level with an amplitude of 0.5...0.6 m and by introducing exohormonal preparations depending on the magnitude of displacement from the centre of nucleus in the eggs. When shifting the nucleus from the centre by 60...70% are stimulated the producers in the first decade of the reproductive period with normative doses of exohormonal preparations or in the second decade of the reproductive period are stimulated the females by 50% of the normative dose and the males with a normative dose, when shifting the nucleus from the centre by 80...90% are stimulated the producers only in the first decade of the reproductive period by 15...20% of the normative doses of exohormonal preparations. The spawn and sperm are obtained by manual straining into the cells, and the obtained spawn is fecundated and placed in the incubation apparatuses. Invenţia se referă la piscicultură, în particular la un procedeu de reproducere a cosaşului.Procedeul include plasarea reproducătorilor într-un bazin şi stimularea lor prin reglarea condiţiilor mediului în bazin: majorarea temperaturii apei până la 22...24°C cu 24 de ore până la începutul reproducerii, formarea zonei cu turbulenţe ale fluxului de apă cu o viteză de 0,3...0,5 m/s, efectuarea oscilaţiilor periodice ale nivelului apei cu o amplitudine de 0,5...0,6 m, şi prin injectarea preparatelor exohormonale în funcţie de valoarea deplasării de la centru a nucleului în ovule. La deplasarea de la centru a nucleului cu 60...70% se stimulează reproducătorii în prima decadă a perioadei de reproducere cu doze normative de preparate exohormonale sau în a doua decadă a perioadei de reproducere se stimulează femelele cu 50% din doza normativă, iar masculii cu o doză normativă, la deplasarea de la centru a nucleului cu 80...90% se stimulează reproducătorii doar în prima decadă a perioadei de reproducere cu 15...20% din dozele normative de preparate exohormonale. Icrele şi sperma se obţin prin stoarcerea manuală în rigole, icrele obţinute se fecundează şi se amplasează în aparatele pentru incubare. Изобретение относится к рыбоводству, в частности к способу воспроизводства белого амура.Способ включает посадку производителей в бассейн и стимулирование их путем регулирования условий среды в бассейне: повышение температуры воды до 22...24°С за сутки до начала воспроизводства, создание в нем зоны турбулентных потоков воды со скоростью 0,3...0,5 м/с, осуществление периодических колебаний уровня воды с амплитудой 0,5...0,6 м, и путем введения экзогормональных препаратов в зависимости от величины смещения от центра ядра в яйцеклетках. При смещении ядра от центра на 60...70% стимулируют производителей в первой декаде репродуктивного периода нормативными дозами экзогормональных препаратов или во второй декаде репродуктивного периода стимулируют самок 50% от нормативной дозы, а самцов - нормативной дозой, при смещении ядра от центра на 80...90% стимулируют производителей только в первой декаде репродуктивного периода 15...20% от нормативных доз экзогормональных препаратов. Икру и сперму получают путем сцеживания вручную в кюветы, полученную икру оплодотворяют и помещают в инкубационные аппараты.