what will be the time allocated to starter stage, grower stage and finisher stage?. what will be the quantity of feed per pig per each stage at what crude protein percentage
It's always best to feed pigs to a weight limit rather than an age limit. Normally the starter phase is from weaning (8kg) through to 30kg (target 10 weeks of age) with a feed conversion of around 1.40 (31kg of feed). The grower phase normally runs from 30 to 60kgs (15-16weeks of age). The feed conversion will depend on your genetic but a feed conversion of less than 2 is a good (60kg of feed). The finisher phase from 60kg to market will depend on your target market weight. With reasonable genetics a 100kg live weight can be reached at 20-21 weeks of age. The feed conversion here will depend on genetics, sex (females vs entire males vs castrates) market weight etc.
The crude protein level is generally only a guide and diets should be formulated to the corrected lysine to energy ratio and also to a well balanced amino acid profile. As a general rule the average crude protein level for the starter, grower and finisher phases are 19, 17 and 15%.