Total parenteral nutrition (TPN) supplies all daily nutritional requirements. TPN can be used in the hospital or at home. Because TPN solutions are concentrated and can cause thrombosis of peripheral veins, a central venous catheter is usually required.
1 Chick crumbs â Fed from hatch to 5 weeks old. Typically 19% Protein. 2  Growers mash or pellets â Fed from 6 weeks to 18 weeks. Typically 15 to 16% Protein.  Layers mash or pellets â Fed from 18 weeks as a pullet comes into lay. Typically 15 to 17% Protein.
The University of California-Davis recommends the following for feeding layer hens: 1  Chick starter: 2 to 2.9 lbs. 2  Pullet grower: 12 to 13 lbs. 3  Layer feed: 1.8 to 2.4 lbs.