Experimental group | Characteristic of group | |
1) Control | Basic ration + vitamin D3 | |
2) Rickets | Basic ration (vitamin D3 free) | |
3) Basic ration + CaCO3 | Basic ration (vitamin D3 free); starting from the age of 14 days the chickens received per os calcium carbonate for two weeks (Са2+ 5 mg/day) | |
4) Basic ration + CaCO3 + D3 | Basic ration (vitamin D3 free); starting from the age of 14 days the chickens received per os calcium carbonate for two weeks (Са2+ 5 mg/day) and cholecalciferol 0.25 µg/day | |
5) Basic ration + ACaSC* | Basic ration (vitamin D3 free); starting from the age of 14 days age the chickens received per os amorphous calcium salts for two weeks (Са2+ 5 mg/day) | |
6) Basic ration + ACaSC + D3 | Basic (vitamin D3 free) ration; starting from the age of 14 days the chickens received per os amorphous calcium salts for two weeks (Са2+ 5 mg/day) and cholecalciferol 0.25 µg/day | |