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High-survival-rate and high-growth-rate artificial breeding method for acanthopagrus latus

A technology for the survival rate of yellow-finned sea bream, which is applied in the field of fish farming, can solve the problems of slow growth rate, difficulty in meeting artificial breeding, and narrow suitable temperature for juvenile fish, and achieves the effect of increasing the growth rate.

Inactive Publication Date: 2021-06-22
HAINAN CHENHAI AQUATIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the seedling conditions of yellowfin roughy seabream are mainly water temperature 16-23 ℃, salinity 25-33‰, pH 7.0-8.0, and dissolved oxygen above 4 mg / L. Under these conditions, a higher survival rate can be obtained, but the growth rate It is relatively slow, usually after 60 days of breeding, it can only reach a fish length of about 3-4cm, which is difficult to meet the requirements of artificial breeding. Therefore, continue to seek an artificial breeding method for yellowfin roughy with high survival rate and high growth rate
In addition, extreme high temperature weather is prone to occur in southern my country, while adult yellowfin roughy can resist low temperature of 8°C and high temperature of 35°C in a short period of time, but the suitable temperature for juvenile fish is narrow, and the optimum temperature for survival of juvenile fish is 9-30°C , the optimum temperature for growth is 15-27°C

Method used

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Experimental program
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Effect test

Embodiment 1

[0037] A method for artificial breeding of yellowfin roughy seabream with high survival rate and high growth rate, comprising:

[0038] 1) Select nursery ponds: add chlorella to indoor cement ponds, and keep the density of chlorella in water at 40×10 4 ~50×10 4 a / mL;

[0039] 2) Budding seedlings: put in the newly hatched larvae, and the breeding density of the newly hatched larvae is 30,000 fish / m 3 ;

[0040] 3) Regulate environmental factors during seedling cultivation:

[0041] Larvae 3-15 days old, pH 6.5-6.8; 16-60 days old, pH 8.2-8.5;

[0042] During seedling cultivation, keep the salinity at 25-30‰, the water temperature at 15-25°C, and the dissolved oxygen in the water is greater than 5mg / L;

[0043] Change the water every day, 20-30% of the water before the age of 20 days, and 50-60% of the water at the age of 20-60 days.

[0044] 4) Feeding:

[0045] The larvae were not fed before the age of 3 days, and the larvae were fed at the age of 3 days. Feeding stan...

Embodiment 2

[0051] A method for artificial breeding of yellowfin roughy seabream with high survival rate and high growth rate, comprising:

[0052] 1) Select nursery ponds: add chlorella to indoor cement ponds, and keep the density of chlorella in water at 40×10 4 ~50×10 4 a / mL;

[0053]2) Budding seedlings: put in the newly hatched larvae, and the breeding density of the newly hatched larvae is 30,000 fish / m 3 ;

[0054] 3) Regulate environmental factors during seedling cultivation:

[0055] Larvae 3-15 days old, pH 6.5-6.8; 16-60 days old, pH 8.2-8.5;

[0056] During seedling cultivation, keep the salinity at 25-30‰, the water temperature at 15-25°C, and the dissolved oxygen in the water is greater than 5mg / L;

[0057] Change the water every day, 20-30% of the water before the age of 20 days, and 50-60% of the water at the age of 20-60 days.

[0058] 4) Feeding:

[0059] There is no need to feed the larvae before the age of 3 days, and the larvae start to be fed with bait or arti...

Embodiment 3

[0065] A method for artificial breeding of yellowfin roughy seabream with high survival rate and high growth rate, comprising:

[0066] 1) Select nursery ponds: add chlorella to indoor cement ponds, and keep the density of chlorella in water at 40×10 4 ~50×10 4 a / mL;

[0067] 2) Budding seedlings: put in the newly hatched larvae, and the breeding density of the newly hatched larvae is 30,000 fish / m 3 ;

[0068] 3) Regulate environmental factors during seedling cultivation:

[0069] Larvae 3-15 days old, pH 6.5-6.8; 16-60 days old, pH 8.2-8.5;

[0070] During seedling cultivation, keep the salinity at 25-30‰, the water temperature at 15-25°C, and the dissolved oxygen in the water is greater than 5mg / L;

[0071] Change the water every day, 20-30% of the water before the age of 20 days, and 50-60% of the water at the age of 20-60 days.

[0072] 4) Feeding:

[0073] There is no need to feed the larvae before the age of 3 days, and the larvae start to be fed with bait or art...

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Abstract

The invention discloses a high-survival-rate and high-growth-rate artificial breeding method for acanthopagrus latus. The high-survival-rate and high-growth-rate artificial breeding method for the acanthopagrus latus comprises the following steps of (1) selecting a nursery pond; (2) carrying out fry distribution, specifically, putting newly hatched fry; (3) regulating and controlling environmental factors in the fry breeding period, wherein the fry are 3-15 days old, and the pH value of a water body is 6.5-6.8; of the fry are 16-60 days, the pH is 8.2-8.5; in the fry breeding period, the salinity is kept at 25-33% o, the water temperature is kept at 15-35 DEG C, and dissolved oxygen in water is larger than 5 mg / L; and (4) feeding, specifically, feeding rotifers to the fry at the age of 3-12 days, feeding artemia nauplii at the age of 13-20 days, and feeding artificial feed at the age of 13-60 days, wherein the artificial feed comprises the following components: white fish meal, corn protamine, euphausia superba powder, spirulina powder, cuttlefish oil, lecithin, puerarin, yucca saponin, multivitamins and a feed adhesive. According to the high-survival-rate and high-growth-rate artificial breeding method for the acanthopagrus latus, the survival rate can reach 96% or above, the fish body length reaches about 46-55 mm after fry breeding is carried out for 60 d, the growth speed is increased by 30% or more compared with a conventional method, and the high survival rate and the high growth rate of the acanthopagrus latus fry are achieved through the scheme.

Description

technical field [0001] The invention belongs to the technical field of fish breeding, and in particular relates to a method for artificial breeding of yellowfin roughy seabream with high survival rate and high growth rate. Background technique [0002] Yellowfin seabream (scientific name: Acanthopagrus latus) is a marine fish belonging to the genus Acanthopagrus latus of the genus Acanthopagrus. . Yellowfin roughy has rich nutrition, delicious meat and high economic value. It is very popular among consumers and occupies an important position in the mariculture industry. At present, the seedling conditions of yellowfin roughy seabream are mainly water temperature 16-23 ℃, salinity 25-33‰, pH 7.0-8.0, and dissolved oxygen above 4 mg / L. Under these conditions, a higher survival rate can be obtained, but the growth rate Slower, usually after 60 days of raising seedlings, it can only reach a fish length of about 3 to 4 cm, which is difficult to meet the requirements of artifici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01K61/13A23K50/80A23K20/121
CPCA01K61/10A01K61/13A23K50/80A23K20/121Y02A40/81Y02A40/818
Inventor 蔡春有黄春仁蔡建顺蔡有森李伟蔡四川陈贞年蔡金泉蔡惠明王景宝蔡智怀陈艺斌刘赐福蔡艺新陈猛猛吴光灿罗磊
Owner HAINAN CHENHAI AQUATIC CO LTD
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