Bioefficacy determination of methionine hydroxy analog-free acid relative to DL-methionine in laying hen diets with limited methionine using different regression models
Bateman, A.; Liu, Z.H.; Roland, D.A.; Sr
International Journal of Poultry Science 4(9): 628-632
ISSN/ISBN: 1682-8356 Accession: 004402300
A study was conducted to compare bioefficacy of liquid DL-methionine hydroxy analogue-free acid (MHA-FA) and DL-methionine (DL-Met) in laying hens. Biological efficacy was determined for egg production, egg mass, and egg weight using five regression models. Four levels of DL-Met (0.012, 0.024, 0.036, and 0.048%) and MHA-FA (0.014, 0.027, 0.041, and 0.054%) were added on an equimolar basis to a basal diet containing 14.97% protein and 0.27% methionine.