SC/T 2087-2018 in English

VALID

Blood clam-Broodstock and seedling

Issued on:2018-12-19
Implemented on:2019-06-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $100.00
$97.00

Standard No:	SC/T 2087-2018
Document status:	VALID
Title in English:	Blood clam-Broodstock and seedling
Title in Chinese:	泥蚶亲贝和苗种
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-12-19
Implemented on:	2019-06-01
Professional Classification:	SC-Aquaculture
Related Keywords:	seedling cultivation file blood clam-broodstock shellfish seedling standards standard indicator categories broodstock requirements germplasm standard
Related Topics:	avidin relative avidin group Kanjiang Coavidin family liquid pro mud pro-link Those who hinder relatives incompatibility affinity Lithophilic seed seed cowry Parental affinity t animal friendly affinity method Parents trace affinity NK92 affinity test Shellfish Seed Technology

Introduction

Analysis of the core content of the standard

Indicator categories	Broodstock requirements	Seedling requirements
Age/Specification	2-3 years old \| Shell length ≥2cm	Divided into three grades: small (1-2mm), medium (2-3mm), large (≥3mm)
Quality indicators	Fattness ≥7% \| Gonad coverage 100%	Specification qualification rate 85-95% \| Disability rate ≤5%
Inspection methods	Annual ring identification + gonad microscopic observation	Vernier caliper measurement + dissecting microscope counting

Key technical points

Germplasm control: It is clearly stipulated that the offspring of inbreeding are prohibited from being used as broodstock, and they must meet the SC/T 2069 germplasm standard. During the breeding period, the egg diameter (55-65μm) and sperm motility of broodstock must be observed under a microscope.

Grading management: Seedlings are divided into three grades according to shell length, among which large-sized seedlings require a specification qualification rate of ≥85% and a disability rate of ≤3%.

Implementation recommendations

Transportation specifications: Things to note when transporting broodstock:
1. Use breathable textile bags for packaging
2. Control the temperature at 20-25℃
3. Transport time ≤48 hours

Quality control points: It is recommended to establish a seedling cultivation file to record key information such as the source of broodstock and the batch of induced spawning.

Background of standard evolution

This standard is the first to formulate systematic specifications for the cultivation of mud clams (Tegillarca granosa), filling the gap in shellfish seedling standards. Compared with the old version, the following are added:
1. Quantified fatness index (7%)
2. Detailed requirements for seedling injury rate classification
3. New air transport temperature control clause

More samples: JC/T 2453-2018 GB 50021-2001(2009) JGJ 94-2008

Sample only — not a preview of SC/T 2087-2018