4.2    Production process for bypass protein feed supplement

•         Load the protein meal under the treatment on to the hopper and transfer via auger to the vibro feeder. Then grind it to 2-3 mm particle size by the hammer mill and transfer to the fountain mixer via auger.

•         When half (50 per cent) of  protein  meal is transferred to  the mixer,  operate the formaldehyde pump to discharge liquid formaldehyde having viscosity and specific gravity similar to water.

•         Mix protein meal with desired level of formaldehyde (37-40 per cent w/v) for 15-30 minutes.

Fig. 4.2 Bypass protein feed manufacturing plant

•         Simultaneously, the remaining half of protein meal continues to pour in the mixer, to avoid formation of formaldehyde lumps at the bottom of the mixer.

•         After  receiving  complete  protein  meal  in  the  mixer   and  desired  quantity  of formaldehyde,  allow  the  protein  meal in  the  mixer  for  homogeneous mixing  for another 15 minutes.

              •         Discharge the treated protein meal to air tight silo and store it for a period of 8 days.

•         After 3 days of incubation, treated meal can be transferred to HDPE laminated bags, for storage up to 6 days (Fig. 4.2).

•         Treated protein meal(s) can be fed either directly as top feed or can be incorporated in compounded cattle feed @ 25 per cent.

Specifications  for packaging bags for bypass protein supplement

The packing material should be of standard quality and free from contaminants. For packaging of formaldehyde treated protein meals, 25 kg HDPE woven sack laminated bag can be used with following dimensions:

Size      :  25 kg HDPE laminated

Length :  30 inches

Width   :  22 inches