GB/T 39235-2020Nutrient requirements of swine (English PDF)

1 Scope

This standard specifies the nutritional requirements for lean pigs, fat pigs and fat pigs:

This standard applies to the preparation of pig feed for feed enterprises and various types of pig farms (households):

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 article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 10647 Terminology of Feed Industry

3 Terms and definitions

The following terms and definitions defined in GB/T 10647 apply to this document:

3:1

Nutrient requirements

Minimum nutrient requirements

The minimum amount of nutrients an animal needs to maintain normal physiological activities, body health, and achieve specific production performance:

3:2

Lean-type pig

Pigs whose carcass lean meat percentage is at least 55:0% when their live weight reaches 95kg~105kg before slaughter:

Note: The carcass lean meat rate is generally obtained by the slaughter measurement method specified in NY/T 825:

3:3

Fatty pig lard-typepig

When the live weight before slaughter reaches 70kg~95kg, the carcass lean rate is lower than 45:0% of pigs:

Note 1: The lean carcass rate is generally obtained by the slaughter determination method specified in NY/T 825:

Note 2: Most local pig breeds and hybrid pig breeds in my country are fat pigs:

3:4

Meat-type pig

Pigs whose carcass lean meat rate is between 45:0% and 55:0% when live weight reaches 85kg-100kg before slaughter:

Note: The carcass lean meat rate is generally obtained by the slaughter measurement method specified in NY/T 825:

3:5

Digestible energy; DE Apparent digestible energy; ADE The energy value of the feed after subtracting the manure energy:

3:6

Metabolizable energy; ME Apparent metabolizable energy; AME Feed can always deduct the energy value of fecal energy and urine energy: