GB/T 25172-2020Technical specification for production and preservation of fresh boar semen (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 25172-2010 "Technical Specifications for the Production and Storage of Pig Semen at Room Temperature", which is mainly compared with GB/T 25172-2010 The changes are as follows.

---Added "GB 23238" and "GB/T 6682" (see Chapter 2);

---Added "Equipment collection method suitable for operation according to the instruction manual" (see 5.1.2.3);

--- Modify the sperm deformity rate from "<=18%" to "<=20%" (see 5.2.2, 2010 edition 5.2);

--- Deleted the "number of bacterial colonies" (see 5.2, the 2010 version of 5.2);

---Sperm motility verification method has been added "The use of automatic analysis equipment should be operated according to its detection method" (see 5.2.3.2);

--- Modify the pH value of the diluent from "6.4~7.2" to "6.8~7.2" (see 4.5.4, 6.1.3 of the 2010 edition);

--- Modify the "dose per head" and "total sperm count" of the diluted semen to "dose. The number of spermatozoa in each dose should meet The provisions of GB 23238."(See 5.4.1, 6.2.5 of the 2010 edition);

--- "Semen product quality (see Table 2)" is amended to "room temperature semen product quality and marking shall meet the requirements of GB 23238." (see 5.6.4, 8.4 of the 2010 edition).

1 Scope

This standard specifies the basic requirements and technical requirements for the production and storage of pig semen at room temperature, describes the corresponding test methods, and provides storage And transport content.

This standard applies to the production and storage of pig semen at room temperature.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document.

GB/T 6682 Analytical laboratory water specifications and test methods

GB 23238 Breeding pig semen at room temperature

3 Terms and definitions

The following terms and definitions apply to this document.

4 Basic requirements