1. Egg producers pay to remove spent hens;Brown;Feedstuffs,1994
2. Multiple range and multiple F tests;Duncan;Biometrics,1955
3. Extrusion processing of broiler starter diets containing ground whole hens, poultry by-product meals, feather meal, or ground feathers;Haque;Poultry Sci,1991
4. Supply and demand for spent fowl. New England Poultry Letter, Coop. Extension, Vol. 5 No. 5. National Research Council, 1994. Nutrient Requirements of Poultry. 9th rev. ed.;McLaurin,1991
5. Rendering appears to be solution to spent hen problems;Olejnik;Poultry Times,1995