Abstract
Studies were conducted to investigate the value of poultry by-product meal (PBPM) when incorporated into practical diets at low levels (5 to 10%). Samples from one plant, a Monday morning sample (fresh broiler waste) and a Friday afternoon sample (broiler and hatchery waste and dissolved air flotation sludge) were compared to a sample from another plant (fresh broiler waste). When the samples were incorporated at the 5% level into isocaloric, isonitrogenous corn-soy meal-based practical diets, no differences in 20-day gain or feed efficiency could be detected between the samples or in comparison with the effects of feeding an all-plant-based control diet in two experiments. Chick growth and feed efficiency were significantly depressed when PBPM was incorporated into the diet at the 10% level.
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