This standard specifies the source, external morphology, breeding age and weight, and service life of black carp (Mylopharyngodon piceus Richardson), grass carp (Ctenopharyngodonidellus Cuvier et Valenciennes), silver carp (Hypophthalmichthys molitrix Cuvier et Valenciennes), and bighead carp (Aristichthys nobilis Richardson) broodstock. It is applicable to broodstock used for artificial breeding of black carp, grass carp, silver carp, and bighead carp. GB/T 5055-1997 Black carp, grass carp, silver carp, and bighead carp broodstock GB/T5055-1997 Standard download decompression password: www.bzxz.net

GB/T5055--1997
This standard was first issued in 1985. This time, GB5055-85 "Black carp, grass carp, silver carp, bighead carp, broodstock" was revised in accordance with the format of GB/T1.1-1993 "Guidelines for Standardization Work Unit 1: Rules for Drafting and Presentation of Standards Part 1: Basic Provisions for Standard Writing". During the revision, Chapter 1 "Scope" was added in the format, and the chapter numbers in the original standard were postponed; in terms of content, the contents that have been proven effective in practice in the original standard were retained, and the contents of some chapters and clauses were slightly modified. This standard will be implemented from January 1, 1998, and will replace GB5055-85. This standard was proposed by the Ministry of Agriculture of the People's Republic of China. This standard is under the jurisdiction of the Freshwater Aquaculture Sub-Technical Committee of the National Technical Committee for Aquatic Products Standardization. The drafting units for the first release of this standard are: Zhejiang Freshwater Fisheries Research Institute, Hunan Fisheries Research Institute, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, and Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences. The drafting unit for this revision of this standard is: Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences. The main drafters of this standard for the first release are: Shen Rencheng, Xu Guxing, Wu Weixin, Fu Chaojun, Li Youguang. The drafters of this revision of this standard are: Xu Zhongfa, Yao Aiqin, Luo Xiangzhong. 29
1 Scope
National Standard of the People's Republic of China
Parents fish of black carp,grass carp:silver carp and bighead carpGB/T 5055
—1997
Replaces GB5055—85
This standard specifies the source, external morphology, breeding age and weight, as well as service life of broodstock of black carp (Mylopharyngodon piceus Richardson), grass carp (Ctenopharyngodonidellus Cuvieret Valenciennes), silver carp (Hypophthalmichthys molitrir Cuvier et Valenciennes) and (Aristichthys nobilis Richardson). It is applicable to broodstock used for artificial breeding of black carp, grass carp and silver carp.
2 Source
2.1 Natural seedlings in rivers or seedlings from seed farms that hold seed production licenses issued by the state, which are specially cultivated into broodstock. 2.2 Broodstock are cultivated from black carp, grass carp, silver carp, natural germplasm resource banks or edible fish collected from rivers, reservoirs, lakes and other natural waters that have not been artificially stocked.
2.3 It is strictly forbidden to use the offspring of inbreeding as broodstock. Female and male fish bred by general production units (not seed farms) shall not be kept as broodstock of this unit at the same time.
2.4 The original species should be introduced every 6 to 10 years in accordance with the provisions of 2.1 and 2.2 to cultivate broodstock. 3 External morphology
Physical fitness, no disease, no deformity or defect. 4 Reproduction age and body
4.1 Black carp, grass carp and silver carp that have reached initial sexual maturity shall not be used as broodstock for artificial breeding. The age of sexual maturity, the minimum age for reproduction and the minimum weight for black carp, grass carp and silver carp are shown in Table 1, Table 2, Table 3 and Table 4 respectively. Table 1
Pearl River Basin
Yangtze River Basin
Black carp sex
Approved by the State Administration of Technical Supervision on June 16, 199730
Age of sexual maturity
(expressed in full age)
Minimum age for reproduction
(expressed in full age)
Minimum weight for reproduction
Implemented on January 1, 1998
GB/T 5055—1997
Minimum weight allowed for reproduction
Minimum age allowed for reproduction
Age of sexual maturity
(expressed in full age)
(expressed in full age)
Sex of grass carp
Pearl River Basin
Yangtze River Basin
Yellow River Basin
Heilongjiang River Basin
Minimum weight allowed for reproduction
Minimum age allowed for reproduction
Age of sexual maturity
(expressed in full age)
(expressed in full age (indicated by age)
Silver carp sex
Pearl River Basin
Yangtze River BasinbZxz.net
Yellow River Basin
Heilongjiang River Basin
Minimum weight allowed for reproduction
Minimum age allowed for reproduction
Age of sexual maturity
(in full age)
(in full age)
Pearl River Basin
Yangtze River Basin
Yellow River Basin
Heilongjiang River Basin
Use period
Black carp broodstock is used up to 20 full years.
GB/T 5055-—1997
Grass carp broodstock is used up to 14 full years in the Pearl River Basin and Yangtze River Basin, 15 full years in the Yellow River Basin, and 16 full years in the Heilongjiang Basin.
Silver carp broodstock are used up to 12 years old in the Pearl River Basin and the Yangtze River Basin, 14 years old in the Yellow River Basin and the Heilongjiang River Basin, and bighead carp broodstock are used up to 15 years old.
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