Abstract
EFFECT OF CAGE SIZE AND BIRD DENSITY ON PERFORMANCE OF SIX COMMERCIAL STRAINS OF LAYERSA. W. Adams and M. E. JacksonDepartment of Dairy and Poultry Science, Kansas State University, Manhattan, Kan. 66502Six commercial strains of Leghorn type pullets were housed in multiple bird cages of two sizes and at two bird densities. Two or four birds in 30.5 × 45.7 centimeter cages and 8 or 16 birds in 71.1 × 76.2 centimeter cages were compared. Birds that died were not replaced. Mortality, egg production, egg weight and interior egg quality were the major criteria measured for 365 days.Significant strain differences were observed in production, mortality, egg size and interior egg quality.Birds housed in smaller cages laid more (64.1 to 58.3 percent) and fewer died (26.3 to 39.9 percent) than those in larger cages. Cage size had no effect on interior egg quality and size. Regardless .
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