RU2012148106A

RU2012148106A - METHOD FOR CONTINUOUS DISCOVERY OF TROPICAL CANCERS

Info

Publication number: RU2012148106A
Application number: RU2012148106/13A
Authority: RU
Inventors: Андриан Иванович Хорошко; Виктор Николаевич Крючков
Original assignee: Общество с ограниченной ответственностью "Зко-тропик"
Priority date: 2012-11-12
Filing date: 2012-11-12
Publication date: 2014-05-20
Also published as: RU2525334C2

Abstract

1. Способ непрерывного разведения тропических раков, на основе получения личинок от производителей, содержащихся в индустриальных условиях, отличающийся тем, что получают 2-3 генерации жизнестойкой молоди в год от самок тропических раков, которых содержат на протяжении всего годового цикла в одной и той же, общей с самцами рыбоводной емкости с температурой воды 26-28°С, рН 7,5-8,5, кислородом не ниже 7 мгО/л, с содержанием азотистых соединений в пределах рыбоводных норм для карповых рыб и плотностью посадки не более четырех семейных групп на 1 м, с индивидуальными укрытиями в виде открытых полостей, в количестве не менее 1 укрытия на каждого рака и аналогичными укрытиями для личинок и молоди раков, но меньшего сечения, в количестве не менее 500 шт. на каждый квадратный метр емкости, создают в ней световой режим «день-ночь» 14 и 10 часов соответственно, в течение 2 месяцев, и 10 и 14 часов, в течение 1 месяца, при четырехкратном повторении этого цикла в течение всего года, при этом регулярно одноразово кормят взрослых раков, по поедаемости, вечером, каждый раз отдельным видом натурального корма животного или растительного происхождения, и систематически, не реже одного раза в неделю, отлавливают подросшую до 10-20 мг молодь, и в течение всего года сохраняют сформированные семейные группы раков, не разделяя их по полу и не пересаживая для специальной преднерестовой подготовки в отдельные рыбоводные емкости с иными условиями содержания.2. Способ по п.1, отличающийся тем, что в течение всего годового цикла в рыбоводной емкости с семейными группами раков поддерживают оптимальную для нереста раков температуру и гидрохимические параметры1. A method of continuous breeding of tropical crayfish, based on obtaining larvae from producers kept in industrial conditions, characterized in that they receive 2-3 generations of viable juveniles per year from females of tropical crayfish, which are kept throughout the annual cycle in the same , common with the male fish tank with a water temperature of 26-28 ° C, pH 7.5-8.5, oxygen not lower than 7 mgO / l, with nitrogenous compounds within fish breeding rates for cyprinids and a landing density of not more than four family groups per 1 m, s ndividualnymi shelters in the form of open cavities, in an amount of at least one cover for each cancer and similar shelters for larvae and fry of cancers, but smaller cross-section, in an amount of not less than 500 pieces. for each square meter of capacity, they create a day-night light mode for 14 and 10 hours, respectively, for 2 months, and 10 and 14 hours, for 1 month, with a four-fold repetition of this cycle throughout the year, while they regularly feed adult crayfish once a day, by eating, in the evening, each time with a separate type of natural food of animal or vegetable origin, and systematically, at least once a week, catch juveniles grown up to 10-20 mg, and maintain the formed family groups throughout the year crayfish without dividing them by sex and transplanting for special pre-spawning preparation into separate fish breeding tanks with other conditions of detention. 2. The method according to claim 1, characterized in that during the entire annual cycle in the fish tank with family groups of crayfish, the temperature and hydrochemical parameters are optimal for spawning of crayfish

Claims

1. A method of continuous breeding of tropical crayfish, based on obtaining larvae from producers kept in industrial conditions, characterized in that they receive 2-3 generations of viable juveniles per year from females of tropical crayfish, which are kept throughout the annual cycle in the same , common with the male fish tank with a water temperature of 26-28 ° C, pH 7.5-8.5, oxygen not lower than 7 mgO ₂ / L, with nitrogenous compounds within the fish breeding standards for cyprinids and a landing density of not more than four family groups on 1 m ² , with individual shelters in the form of open cavities, in an amount of at least 1 shelter for each cancer and similar shelters for larvae and juvenile cancers, but of a smaller cross section, in an amount of at least 500 pcs. for each square meter of capacity, they create a day-night light mode for 14 and 10 hours, respectively, for 2 months, and 10 and 14 hours, for 1 month, with a four-fold repetition of this cycle throughout the year, while they regularly feed adult cancers one time at a time, in the evening, each time with a separate type of natural food of animal or vegetable origin, and systematically, at least once a week, catch juveniles grown up to 10-20 mg, and maintain the formed family groups throughout the year crayfish without dividing them by sex or transplanting for special pre-spawning preparation into separate fish breeding tanks with different conditions.

2. The method according to claim 1, characterized in that during the entire annual cycle in a fish tank with family groups of crayfish, the temperature and hydrochemical parameters of water are optimal for spawning of crayfish.

3. The method according to claim 1, characterized in that as an individual shelter use open cavities of round or square cross section with a cross-sectional area of at least 20 cm ² for adult crayfish, and a cross section of 0.5 to 1.5 cm ² for larvae and juvenile crayfish

4. The method according to claim 1, characterized in that only producers are fed once a day with only one type of natural feed or animal or vegetable origin.