What feed is best for lactating sows? Recommended typical formulas

Lactating sow formula: corn 66.5%, soybean cake 10%, peanut cake 10%, wheat bran 8%, fish meal 3%, bone meal 1.3%, shell powder 0.7%, salt 0.5%, plus added multivitamins.

Suitable for lactating sows 1-20 days after farrowing: corn 67%, wheat bran 8%, peanut cake 10%, soybean cake 12%, bone meal 1.7%, shell powder 0.8%, salt 0.5%, plus added oxytetracycline and multivitamins.

Suitable for lactating sows 20-30 days after farrowing: corn 38%, soybean cake 25%, wheat bran 10%, sorghum bran 25%, shell powder 1.4%, salt 0.6%, green feed 2.94%.