GB/T 10030-2026Bluntnose black bream - Broodstock, fry and fingerlings (English PDF)

4.1 Source

4.1.1 Parent fish, reserve parent fish, or fry caught from natural waters and specially bred.

4.1.2 Broodstock provided by qualified breeding farms or reserve broodstock or fry introduced from such breeding farms, and specially bred And thus.

4.2 Quality Requirements

4.2.1 Germplasm It conforms to the requirements of GB/T 10029.

4.2.2 Appearance Body shape and color conform to the description in GB/T 10029.

4.2.3 Age The suitable breeding age is 2 to 4 years.

4.2.4 Body length and weight Body length >=28cm, weight >=500g.

4.2.5 Characteristics during the reproductive period Female fish. The abdomen is swollen, soft and elastic, the vent is slightly protruding and reddish; the tubercles are not obvious, and only a few appear on the tail fin. Male fish. The gill covers, pectoral fins, and caudal fins have obvious pearl-like spots and feel rough to the touch. When the abdomen is gently pressed, milky white semen flows out from the vent.

4.2.6 Health Status Physically robust, without injuries or deformities.

5.1 Source

5.1.1 Fish fry It is bred from parent fish that meet the requirements of Chapter 4.

5.1.2 Fish species It is cultivated from fish fry that meet the requirements of 5.1.1.

5.2.1 Fish fry

5.2.1.1 Appearance The fish are translucent and glossy; they swim in groups.

5.2.1.2 Countable Indicators Disability rate <=1%; deformity rate <=1%.

5.2.1.3 Specifications Total length >= 6mm.

5.2.2 Fish species

5.2.2.1 Appearance Normal body shape and color, intact fins and scales, smooth body surface with mucus; agile swimming.

5.2.2.2 Countable Indicators Disability rate <=1%; deformity rate <=1%.

5.2.2.3 Specifications The total length and weight of fish of different sizes are shown in Table 1.

5.2.3 Health Status They are highly responsive to external stimuli, swim nimbly, and can swim against the current.

5.2.4 Safety Indicators Fishing drugs that are prohibited or suspended by the state should not be detected, and the use of restricted drugs should not exceed the standard.

6.1 Parent fish

6.1.1 Source Review the records of broodstock introduction and breeding or breeding production.

6.1.2 Germplasm Test according to the method given in GB/T 10029.

6.1.3 Appearance Place the sample fish in a container that is easy to observe, and observe it with the naked eye under natural light.

6.1.4 Age Check production records or take scales to determine age according to the method given in GB/T 18654.4.

6.1.5 Body length and weight Measured according to the method given in GB/T 18654.3.

6.1.6 Characteristics during the reproductive period Visually examine the body shape, color, cloaca shape and color; touch the gill covers, pectoral fins, caudal fin and abdomen; examine the pearl tubercles and gonadal development. situation.

6.1.7 Health Status Observe with the naked eye under natural light.

6.2 Seedlings

6.2.1 Source Check breeding, production, or purchase records.

6.2.2 Appearance Place the sample in an observable container and observe it with the naked eye.

6.2.3 Countable Indicators Visual inspection. Randomly select more than 100 fish from the fry or fingerling population, and count the total number of samples, the number of injured or deformed fish, and perform continuous sampling inspection. The results were checked three times, and the average value was used to calculate the injury rate and deformity rate of fish fry or fingerlings. The injury rate was calculated according to formula (1), and the deformity rate was calculated according to formula (2). calculate.

6.2.4 Specifications Total length and weight were measured according to the method given in GB/T 18654.3.

6.2.5 Health Status Place the sample in an observable container, gently stir the water in one direction, and observe the reaction and the movement against the current with the naked eye.

6.2.6 Safety Indicators Perform the test according to the current methods for detecting drug residues.

7.1.1 Inspection Classification

7.1.1.1 Delivery Inspection The examination includes appearance, body length and weight, reproductive characteristics, and health status.

7.1.1.2 Type Testing Type testing includes all items specified in Chapter

4.Type testing shall be conducted under any of the following circumstances.

a) When replacing parent fish or when there is a significant change in the number of parent fish;

b) When changes in the aquaculture environment may affect the quality of the broodstock;

c) During normal production, a type test should be conducted at least once every two years;

d) When the delivery inspection results differ significantly from the previous type inspection results;

e) When the national quality supervision agency or the industry competent authority makes an inspection request.

7.1.2 Batch Rules Delivery inspection. a transaction batch or the same induced production batch is considered as an inspection batch; type inspection. a culture tank is considered as an inspection batch.

7.1.3 Sampling Method Perform in accordance with the provisions of GB/T 18654.2.

7.1.4 Judgment Rules

7.1.4.1 Delivery Inspection If any individual has a health condition that does not meet the requirements, the entire batch of inspections is deemed unqualified; individuals with abnormal appearance, body length, or weight are deemed unqualified. qualified.

7.1.4.2 Type Testing If any individual is found to be substandard in terms of germplasm or health condition, the entire batch of tests is deemed substandard; individuals that are substandard in appearance, age, body length, or weight are also considered substandard. The physical examination was deemed unqualified.

7.2.1 Inspection Classification

7.2.1.1 Delivery Inspection The seedlings will be inspected upon delivery. The inspection items will include all items specified in Chapter 5.

7.2.1.2 Type Testing Type testing includes all items specified in Chapter

5.Type testing shall be conducted under any of the following circumstances.

a) Seedlings cultivated in the newly established seedling farm;

b) When changes in the breeding environment may affect the quality of the seedlings;

c) During normal production, a type test should be conducted at least once a year;

d) When the delivery inspection results differ significantly from the previous type inspection results;

e) When the national quality supervision agency or the industry competent authority makes an inspection request.

7.2.2 Batching Rules Seedlings from the same delivery batch or the same cultivation pond constitute one inspection batch.

7.2.3 Sampling Method Perform in accordance with the provisions of GB/T 18654.2.

7.2.4 Judgment Rules If any health condition or safety indicator fails to meet the requirements, the batch is deemed unqualified and cannot be re-inspected. This applies to batches other than those meeting the overall length or weight specifications. For qualified items, the original batch shall be sampled and re-inspected, and the re-inspection results shall prevail.

8.Seedling Counting Method Fish fry are counted using either volumetric or weighing methods, while fingerlings are counted using weighing methods, according to the methods given in GB/T 32758.