Effects of dietary spray-dried plasma protein on nutrient digestibility and growth performance in nursery pigs.

Dietary spray-dried plasma protein (SDPP) is widely used in nursery pig diet due to its high nutrient contents and growth-promoting effects. In the present work, two sources of SDPP were evaluated for energy and amino acid (AA) digestibility and growth performance in nursery pigs. The SDPP 1 produced in the United States contained 78.2% crude protein and 4,862 kcal gross energy/kg and SDPP 2 produced in Korea contained 74.3% crude protein and 4,636 kcal gross energy/kg. Spray-dried plasma protein 1 had a greater digestible energy concentration, but less AA digestibility compared with SDPP 2. Pigs fed the diets containing SDPP consumed more feed and grew faster than those fed the fish meal diet with no difference between the two sources of SDPP. Taken together, SDPP 1 contains greater digestible energy but less AA digestibility compared with SDPP 2. Growth-promoting effects of two sources of SDPP on nursery pigs are greater than fish meal with no difference between the two sources of SDPP.