ANNEX
GRADING METHODS FOR THE CLASSIFICATION OF PIG CARCASSES IN POLAND
PART I
Capteur Gras/Maigre – Sydel (CGM)
1.
The rules provided for in this Part shall apply when the grading of pig carcasses is carried out by means of the apparatus known as ‘Capteur Gras/Maigre – Sydel (CGM)’.
2.
The apparatus shall be equipped with a high-definition Sydel probe 8 mm in width, a light-emitting infra-red diode (Honeywell) and two light sensors (Honeywell). The operating distance is between 0 and 105 mm. The values measured will be converted into estimated lean meat content by the CGM itself.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 60,7538 – 0,6465 × X1 + 0,1243 × X2
Where:
Y
=
the estimated lean meat percentage,
X1
=
the thickness of the back fat measured at the third to fourth rib from last rib position, 60 mm from the dorsal midline, measured parallel to the split line of the carcass,
X2
=
the thickness of the lumbar muscle measured at the third to fourth rib from the last rib position, 60 mm from the dorsal midline, measured parallel to the split line of the carcass.
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART II
Ultra FOM 300
1.
The rules provided for in this Part shall apply when the grading of pig carcasses is carried out by means of the apparatus known as ‘Ultra FOM 300’.
2.
The apparatus shall be equipped with an ultrasonic transducer array at 3,5 MHz (U-Systems). The results of the measurements shall be converted into estimated lean meat content by means of the Ultra FOM 300 apparatus itself.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 64,0655 – 0,5986 × X1 + 0,0584 × X2 – 0,1600 × X3 + 0,0275 × X4
Where:
Y
=
the estimated lean meat percentage,
X1
=
the thickness of the back fat measured at the last rib position, measured at the same time, in the same place and in the same way as X2,
X2
=
the thickness of the lumbar muscle measured at the last rib position, 70 mm from the dorsal midline perpendicularly to the muscle,
X3
=
the thickness of the back fat measured at the third to fourth rib from the last rib position, measured at the same time, in the same place and in the same way as X4,
X4
=
the thickness of the lumbar muscle measured at the third to fourth rib from the last rib position, 70 mm from the dorsal midline perpendicularly to the muscle.
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART III
IM-03
1.
The rules provided for in this Part shall apply when the grading of pig carcasses is carried out by means of the apparatus known as ‘IM-03’.
2.
The apparatus shall be equipped with a needle-optical probe (single line scanner SLS01) of 7 mm diameter. The probe contains the line of contact image sensors (CIS) and green light-emitting diodes. The operating distance is between 0 and 132 mm.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 57,3864 – 0,5657 × X1 + 0,1476 × X2
Where:
Y
=
the estimated lean meat percentage,
X1
=
the thickness of the back fat measured at the third to fourth rib from the last rib position, 60 mm from the dorsal midline, measured parallel to the split line of the carcass,
X2
=
the thickness of the lumbar muscle measured at the third to fourth rib from the last rib position, 60 mm from the dorsal midline, measured parallel to the split line of the carcass,
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART IV
Autofom III
1.
The rules provided for in this Part shall apply when the classification of pig carcasses is carried out by means of the apparatus ‘Autofom III’.
2.
The apparatus shall be equipped with sixteen 2 MHz ultrasonic transducers (Carometec A/S), with an operating distance between transducers of 25 mm. The ultrasonic data shall comprise measurements of back fat thickness, muscle thickness and related parameters. The results of the measurements shall be converted into estimates of the percentage of lean meat by using a computer.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 59,9912 – 0,3658 × X1 – 0,3841 × X2 + 0,0605 × X3 + 0,0602 × X4
Where:
Y
=
the estimated lean meat percentage,
X1
=
the thickness of the back fat (without skin) at the MFT2 position,
X2
=
the thickness of the back fat (without skin) at the MFT1 position,
X3
=
the thickness of the lumbar muscle at the MFT2 position,
X4
=
the thickness of the lumbar muscle at the MFT1 position.
The MFT refers to the position of the minimum fat thickness (without skin). MFT1 refers to the minimum fat thickness in the entire carcass and MFT2 refers to the minimum fat thickness in the lumbar closest to the bottom of the array.
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART V
Autofom IV
1.
The rules provided for in this Part shall apply when the classification of pig carcasses is carried out by means of the apparatus ‘Autofom IV’.
2.
The apparatus shall be equipped with 16 2 MHz ultrasonic transducers (Carometec A/S), with an operating distance between transducers of 25 mm. The ultrasonic data shall comprise measurements of back fat thickness, muscle thickness and related parameters. The results of the measurements shall be converted into estimates of the percentage of lean meat by using a computer.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 56,3590 – 0,7618 × X1 + 0,0326 x X2 + 0,0685 × X3 + 0,0551 × X4 + 0,3868 × X5
Where:
Y
=
the estimated lean meat percentage,
X1
=
the thickness of the back fat (without skin) measured 70 mm from the spine at the MFT2 position,
X2
=
the thickness of the lumbar muscle at the MFT2 position,
X3
=
the maximum thickness of the lumbar muscle of the entire carcass,
X4
=
the thickness of the lumbar muscle at the MFT1 position,
X5
=
the thickness of the back fat (without skin) at the MFT2 position.
The MFT refers to the position of the minimum fat thickness (without skin). MFT1 refers to the minimum fat thickness in the entire carcass and MFT2 refers to the minimum fat thickness in the lumbar closest to the bottom of the array.
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART VI
Fat-O-Meater II (FOM II)
1.
The rules provided for in this Part shall apply when the classification of pig carcasses is carried out by means of the apparatus ‘Fat-O-Meater II (FOM II)’.
2.
The apparatus is a new version of the Fat-O-Meater measurement system. The FOM II consists of an optical probe with a knife, a thickness measurement device having a measurement thickness of 125 mm and a data acquisition and analysis board – Carometec Touch Panel i15 computer (Ingress Protection IP69K). The results of the measurements are converted into estimated lean meat content by means of a computer.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 60,3281 – 0,6493 × X1 + 0,1529 × X2
Where:
Y
=
the estimated lean meat percentage,
X1
=
the thickness of the back fat measured at the third to fourth rib from the last rib position, 70 mm from the dorsal midline perpendicularly to the lumbar muscle,
X2
=
the thickness of the lumbar muscle measured at the third to fourth rib from the last rib position, 70 mm from the dorsal midline perpendicularly to the muscle.
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART VII
Manual method (ZP)
1.
The rules provided for in this Part shall apply when the grading of pig carcasses is carried out by use of the ‘manual method (ZP)’ measuring by ruler.
2.
This method may be implemented using a ruler, with the grading determined on the basis of the prediction equation. It is based on the manual measurement on the midline of the split carcass of the thickness of the back fat and of the thickness of the lumbar muscle.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 62,4306 – 0,6264 × X1 + 0,0911 × X2
Where:
Y
=
the estimated lean meat percentage,
X1
=
the minimum thickness of visible fat on the midline of the split carcass in mm, covering the M. gluteus medius ,
X2
=
the thickness of the lumbar muscle in mm on the midline of the split carcass, measured as the shortest connection between the front (cranial) end of the M. gluteus medius and the upper (dorsal) edge of the vertebral canal.
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART VIII
CSB Image-Meater 2.0
1.
The rules provided for in this Part shall apply when the classification of pig carcasses is carried out by means of the apparatus ‘CSB Image-Meater 2.0’.
2.
The CSB Image-Meater 2.0 consists of a video camera, a PC equipped with an image-analysis card, a screen, a printer, a command mechanism, a trigger mechanism and interfaces. The 5 Image-Meater variables are all measured at the split line in the ham area (around M. gluteus medius ). The results of the measurements shall be converted into estimates of the percentage of lean meat by using a computer.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 56,4264 + 0,1417 × X1 – 0,4331 × X2 – 0,3504 × X3 + 0,9952 × X4
Where:
X1
=
the thickness in mm of the M. gluteus medius at the front (cranial) end,
X2
=
mean averaged thickness in mm of the back fat over M. gluteus medius ,
X3
=
mean averaged thickness in mm of the back fat over the vertebral bodies a, b, c, and d,
X4
=
mean averaged thickness in mm of the external layer of the back fat over the vertebral bodies a, b, c, and d.
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART IX
EstiMeat Expert
1.
The rules provided for in this Part shall apply when the classification of pig carcasses is carried out by means of the apparatus ‘EstiMeat Expert’.
2.
The EstiMeat Expert apparatus consists in a depth camera that captures 3D images of the carcasses into a point cloud data, and a computer equipped with software, based on a neural model, to process the point cloud data. The images obtained are processed by the software and the output is a vector containing several thousand features.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 58,8209 + X1619 × 0,1035 + X2201 × 0,0311 + X2234 × 0,3665 + X2293 × 0,1774 + X2313 × –0,3141 + X2363 × –0,0715 + X2377 × –0,5151 + X2425 × 0,0360 + X2457 × 0,0245 + X2499 × 0,1272 + X2517 × –0,3138 + X2592 × –0,0177 + X2641 × 0,0853 + X2643 × 0,0915 + X2711 × 0,2308 + X2805 × 0,0598 + X2897 × 0,0727 + X3088 × 0,1598 + X3225 × 0,0305 + X3317 × 0,1003 + X3449 × 0,0572 + X3481 × –0,0646 + X3486 × 0,0147 + X3497 × –0,3797 + X3573 × 0,0357 + X3643 × 0,1213 + X3779 × 0,1753 + X3788 × –0,0265 + X3829 × 0,0559 + X3878 × –0,1215 + X4377 × 0,0896 + X4411 × –0,0141 + X4473 × 0,0210 + X4597 × 0,0413 + X4612 × –0,1083 + X4633 × 0,1482
Where the sequence X1619 to X4633 are the features obtained as described in point 2 and selected on the basis of a statistical analysis carried out during the authorisation trial.
This formula shall be valid for carcasses weighing between 60 and 120 kg.
PART X
EstiMeat Pro
1.
The rules provided for in this Part shall apply when the classification of pig carcasses is carried out by means of the apparatus ‘EstiMeat Pro’.
2.
The EstiMeat Pro apparatus consists in a depth camera that captures 3D images of the carcasses into a point cloud data, and a computer equipped with software, based on a neural model, to process the point cloud data. The images obtained are processed by the software and the output is a vector containing several thousand features.
3.
The lean meat content of the carcass shall be calculated in accordance with the following formula:
Y = 58,7239 + X1035 × 0,4758 + X1083 × –0,3372 + X1228 × 0,2446 + X1312 × 0,8333 + X1358 × –0,0403 + X1484 × 0,0297 + X2059 × –0,1927 + X2131 × 0,9101 + X2169 × –0,2740 + X2201 × –0,6023 + X2293 × 0,7966 + X2315 × –0,3573 + X2336 × 0,7383 + X2425 × –0,0186 + X2549 × –0,4582 + X2974 × 1,4175 + X3083 × –0,5134 + X3131 × –0,3641 + X3193 × –0,3497 + X3201 × 0,3780 + X3225 × –0,0341 + X3317 × 0,3329 + X3339 × –0,4669 + X3360 × 0,6139 + X3387 × –0,3666 + X3409 × –0,1408 + X3481 × –0,0379 + X3486 × 0,2139 + X3497 × –0,4410 + X3532 × –0,6743 + X3573 × 0,2748 + X4291 × 0,4108 + X4341 × –0,4624 + X4363 × 0,7046 + X4433 × 0,4170 + X4473 × 0,2388 + X4532 × –0,0327 + X4597 × 0,2930
Where the sequence X1035 to X4597 are the features obtained as described in point 2 and selected on the basis of a statistical analysis carried out during the authorisation trial.
This formula shall be valid for carcasses weighing between 60 and 120 kg.