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The effects of space allowance on egg yield, egg quality and plumage condition of laying hens in battery cages
cage space allowance egg yield feather score plumage condition mortality egg quality
2015/6/5
This study was conducted to investigate the effects of cage stocking density on egg yield, some egg quality traits and plumage condition in laying hens. Eighteen weeks-old 264 ISA-Brown pullets were d...
Changes in Structure of Head Feathers of Wild Plumage Type:Male Mallard Ducks (Anas platyrhynchos var.domesticus) Following Seasonal Plumage Changes
mallard duck seasonal dimorphism plumage pigment feather structure
2009/7/31
Seasonal changes occur in the plumage of male mallard ducks, and this phenomenon is referred to as seasonal dimorphism of the plumage. However, no information is available, especially morphological, a...