0
From d 0 to 14, there was no difference (P > 0.29) in ADG, ADFI, or F/G as the level of fish meal decreased and crystalline amino acids increased. From d 14 to 28 (common diet period), no clear effects (P > 0.09) on growth performance were detected. Overall (d 0 to 28), there was no difference (P > 0.16) in ADG or ADFI. For F/G, a quadratic effect (P < 0.04) was detected, which was the result of small improvements in F/G at the intermediate fishmeal levels (2.70 and 1.80).
It is concluded that crystalline amino acids, when balanced for minimum amino acid ratios, can be used to replace fishmeal in diets for 7- to 11-kg pigs.
JE Nemechek, MD Tokach, SS Dritz, RD Goodband, JM DeRouchey, JL Nelssen, and J Usry, 2010. Swine day, Kansas State University, Report progress 1038: 6-10.
