This standard provides the source, quality requirements and inspection methods of southern catfish (Silurus meridionalis Chen) seedlings. This standard applies to the quality assessment of southern catfish seedlings. SC/T 1051-2002 Southern catfish breeding technical specifications seedlings SC/T1051-2002 Standard download decompression password: www.bzxz.net

ICS 67.120. 30
Aquatic Industry Standard of the People's Republic of China
SC/T1051—2002
Technical specifications for southern sheatfish culture-Fryandfingerling
2002-11-05 Issued
2002-12-20 Implementation
Issued by the Ministry of Agriculture of the People's Republic of China
This standard was proposed by the Fisheries Bureau of the Ministry of Agriculture,
This standard was issued by the National Technical Committee for Aquatic Standardization and the Technical Committee for Aquaculture. The drafting units of this standard are: Sichuan Fisheries Research Institute and Sichuan Fisheries Bureau. Who are the main drafters of this standard: Zhao Gang, Du Jun, Luo Jinsong, Zi Zhong, Lin Jue, Huang Chuang, SC/T1051-2002
1 Scope
Technical Specifications for Farming Southern Perch Seedlings
SC/T1051-2002
This standard provides the source, quality requirements and inspection methods of southern sea bass (SiturusmeridioatisChen) seedlings. This standard applies to the quality assessment of southern seedlings. 2 Normative References
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, all parties to the agreement on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. SC/T1050-2002 Technical Specifications for Breeding of Southern Drills Broodstock 3 Source of Seedlings
3.1 Fry
Fry bred artificially by broodstock that meet the requirements of SC/T1050-2002. 3.2 Fish Species
Fish fry that meet the requirements of 3.1 that are cultivated in ponds or other ways, or natural fish species that are caught in rivers, reservoirs, lakes, etc. that are not artificially stocked.
4 Quality of Fry
4.1 Appearance
Body color is black when observed with the naked eye, and the size is uniform and swimming freely. 4.2 Countable and measurable indicators
4.2.1 Countable indicators
Deformity rate less than 1%: disability rate less than 2%, and individuals with no infectious diseases are not allowed. 4. 2.2 Measurable indicators
The total length of the seedlings should be more than 0.6cm before they can be sold or further cultivated: 5 Fish quality
5.1 Appearance
5.1.1 The body shape is normal, the fins are complete, the body color is grayish yellow or grayish brown, and it has the characteristics of an adult fish. 5.1.2 The body surface is smooth and rich in mucus, the color is normal, the swimming is lively, and the size is uniform. 5. 2 Countable and measurable indicators
5.2.1 Countable indicators
The deformity rate is less than 1%, and the disability rate is less than 1%; in the same batch of fish species, the individual differences shall not be larger or smaller. The average total length of 10 pieces of the batch of fish species:
5.2.2 Measurable indicators
Fish species of various sizes (total length) should meet the requirements of Table 1. 1
SC/T10512002
full length/em
1. 0~-1. 3
1. 3~1. 7
2. 0--2. 3
2. 3~-2. 7
3. 0--3. 3
3. 3 ~~ 3. 7
4. 3~-4. 7
4. 7~-5.
5. 0~5. 3
5. 7 -~ 6. 0
6. G--6. 3
6. 3~6. 7
6. 7~-7. 0
7. 0~7. 3 | | tt | 12
0. 12--0. 17
0. 17--0. 22
0. 22 --0, 33
0. 33 --0. 15
0. 45 ---0. 55
0.55~-0.64
0. 64~-0.87
0. 81 ~1. 03
1,08-.1,20
1.21~-1.12
1. 42--1. 63
1.63--1.32
1.82 2.18
2. 18 --2. 45
2. 45 --2. 71
2. 71--3.18
3. 18~-3.68
5.2.3 Quarantine
Table 1 Weight and total number of perch per dry gram of various sizes of southern perch (average total number of perch per dry gram/kg)
33 333--20 000
20 000~-14 285
1: 28511 111
11 171-~8 333
8 333-~5882
5 882-4545
4515--3030
3 030---2 222
2 222--1 818
1 818~-1 563
1 563~-1 235
1235~971
$71~-853
853-~-701
704--613
613--519
51S--159
459--408
408--360
369~-314
314~-272
Individuals with infectious diseases are not allowed.
6 Inspection Methods
6.1 Sampling
金长/em
8..3~-8. 7
9. 7~~70. 0
10,. 0--10. 3
10. 3--10. 7
10. 7--.11. 8
11. 0~-11. 3
11.3--11.7
11. 7~-12. 0
Weight up
3. G8-- 3. 00
3.90--4.48
4.48~-4.99
4. 99 ~ 5. 15
5. 45-~6. 18
G. 18-~G. 71
6. 71 -~7. 25
7, 25--8. 19
8, 19--8. 80 | |tt | 20~13. 51
12. 7 -~13. 0
13. 51-~ 14. 52
13. --13. 311. 52 --15. 89
13. 3--13. 7
15. 89--17.36
13.7~-14.0
17. 36~ 15. 7]
14. 0--14. 3
18.71--20. 41
14.3--14.7
20. 41~~22. 05
14.7~15. C
22.95~26.00 | 183
183162||tt| |162-149
149-~138
136--122
122--114
11~-105
105--95| |tt||95~-88
8 2--74
74-~69
69--63
58--53
53-·40
49~-44| |tt||Random sampling: The sample size of each batch of fry should be more than 100, and the sample size of fingerlings should be more than 50. Repeat 4 times and take the average value. 6.2 Appearance
Visual observation
6.3 Full length measurement
Use a standard measuring tool to measure the straight length from the snout to the end of the tail fin. 6.4 Weighing
Remove the water attached to the fish body surface and weigh again.
6.5 Deformity rate And disability rate
Count by naked eye observation.
6.6 Diseases
Test according to routine diagnostic methods for fish diseases
7 Judgment rules
SC/T 10512002
During the test, the seed quality does not meet the requirements of If any of the indicators do not meet the requirements, the batch of products shall be deemed unqualified. If one of the indicators does not meet the requirements, the samples shall be doubled for re-inspection. If it still does not meet the requirements, the batch of products shall be deemed unqualified. -2002
People's Republic of China Aquatic Products
Industry Standard
Technical Specification for Breeding Southern Perch Seedlings
SC/F1051--2002
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