| A | SK | SECTION A — HUMAN NECESSITIES |
| A23 | KL | FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES |
| A23K | UKL | FODDER |
| A23K 1/00 | HGR | Animal feeding-stuffs (detoxicating or removing bitter tastes from seeds, e.g. lupin seeds for fodder or food A23L 1/211) |
| A23K 1/02 | UGR1 | |
| A23K 1/04 | UGR1 | |
| A23K 1/06 | UGR1 | | . | from distillers' or brewers' waste |
|
| A23K 1/08 | UGR1 | | . | from waste products of dairy plant |
|
| A23K 1/10 | UGR1 | | . | from meat, fish, or bones; from kitchen waste |
|
| A23K 1/12 | UGR1 | | . | from hydrolysates of wood or straw |
|
| A23K 1/14 | UGR1 | | . | from vegetable materials, e.g. potatoes or roots without ensilaging (preserving food A23B, A23L) |
|
| A23K 1/16 | UGR1 | | . | supplemented with accessory food factors; Salt blocks |
|
| A23K 1/165 | UGR2 | | . . | with steroids, hormones, or enzymes |
|
| A23K 1/17 | UGR2 | |
| A23K 1/175 | UGR2 | | . . | with inorganic substances; Salt blocks |
|
| A23K 1/18 | UGR1 | | . | specially adapted for particular animals (milk substitutes A23C 11/00) |
|
| A23K 1/20 | UGR1 | |
| A23K 1/22 | UGR1 | | . | containing chemicals which are converted to proteins by cattle, e.g. ammonium salts, urea |
|
| A23K 1/24 | UGR1 | |
| A23K 3/00 | HGR | Preservation of materials to produce animal feeding-stuffs |
| A23K 3/02 | UGR1 | |
| A23K 3/03 | UGR2 | | . . | using chemicals for ensilaging |
|
| A23K 3/04 | UGR1 | |