Five 9- or 12-d chick growth bioassay
were done in batteries using 2 Met-deficient diets: a
purified AA-based diet containing (by analysis, as-fed)
20.3% CP, 0.12% Met, and 0.05% cyst(e)ine; and an
AA-fortified corn-peanut meal diet containing (by analysis,
as-fed) 19.0% CP, 0.22% Met, and 0.23% cyst(e)
ine. Feed-grade dl-Met (dl-M; 99%) was compared with
feed-grade dl-OH-Met, Ca (OH-M; 84%).