Poultry Science · 1982 · 75 citations · 11 references
AgricultureAnimal SciencesPoultry ScienceLayer ProductionPoultry ReproductionPoultry WelfareBrooding BehaviorEgg QualityNesting BehaviorReproductive PerformanceCage EnrichmentCage SpaceEgg Production EffectsFeeder Space AllocationLayer Breeder PerformanceLaying Hen Behavior
Experiment 1 compared the effects of cage shape, feeder space, and bird density on performance, nervousness, and feathering of two commercial Single Comb White Leghorn (SCWL) strains. Strain 1 bird s and those housed 3 per cage produced more eggs with fewer body checks and cracks, tended to be less nervous, and had better feather cover than strain 2 birds and those housed 4 per cage (P<.05). Experiment 2 compared the effects of cage shape, feeder space, cage barrier, and bird density on performance of a commercial SCWL strain. Hens in cages with 3 birds laid at 5.4% higher rate (HH) and produced 2.8% fewer undergrade eggs than hens housed 4 per cage (P<.05).
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Effect of Feather Cover on Feed Efficiency in Laying Birds
S. Leeson, W.D. MORRISON · Poultry Science · 1978 · 99 citations · Full text
Nervousness and Hysteria of Mature Female Chickens
Reed S. Hansen · Poultry Science · 1976 · 79 citations · Full text