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Tolerance to ground Sesbania macrocarpa seed by broiler chicks and White Leghorn hens.

Two 21-day experiments using day-old male broiler chicks and a 28-day experiment using 35-wk-old White Leghorn hens were conducted to determine the deleterious effects of ground Sesbania macrocarpa seed in the diet. Seed levels of 0, .10, .25, .50, and 1% were used in both experiments, with a 2% level of inclusion added to Experiment 2. The hens were fed diets containing 0, 1, 2, 3, 4, 5, 6, or 7% seed. In each experiment, four replicate pens of 8 chicks or of 5 hens received each treatment diet. In both chick studies, a seed inclusion of 1% caused a significant reduction in body weight at 21 days of age. Total feed intake was significantly lowered by the inclusion of 1% seed in the first study and by 2% seed in the second study. Feed efficiency, excreta moisture, and mortality were not affected by dietary level of seed in either trial. Seed inclusion at 3% or more depressed the daily feed consumption of the hens; at 6% seed inclusion, egg production was reduced. Egg weight, egg specific gravity, mortality, and body weight change were not affected by treatment. Grains containing sufficient S. macrocarpa seed to produce finished feed with 1 or 3% seed would appear to be detrimental to broiler growth and feed intake by hens, respectively. The blending of such grains with uncontaminated stock could be a possible method of utilizing the contaminated grain.