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- W4321380634 abstract "ABSTRACT The objective was to evaluate the performance, physical egg quality (weight and gravity), and economic index of laying hens reared in cage and cage-free systems. A total of 312 40-week-old Hy-line brown laying hens were distributed in a fully randomized design, split into two treatments (cage-free and cage) with 12 replicates in each system. We housed 144 birds in galvanized-wire cages (12 birds each) and 168 birds in a cage-free system in boxes with wood shaving bedding (14 birds each). The experiment lasted 112 days and divided into four 28-day periods. Regarding performance, feed intake (g) and feed conversion (g/g) of birds reared in the cage-free system were higher (p<0.0001) than the cage system, but no differences were observed (p>0.05) for the other performance parameters and also for egg quality. As for economic index, egg production in the cage-free system was higher (p<0.0001) than the cage system. In conclusion, birds reared in the cage-free system have higher feed consumption but worse feed conversion, increasing egg production cost compared to caged birds; however, there are no changes in egg production and physical quality." @default.
- W4321380634 created "2023-02-21" @default.
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- W4321380634 date "2023-01-01" @default.
- W4321380634 modified "2023-09-27" @default.
- W4321380634 title "Performance, physical egg quality, and economic index of laying hens under different rearing systems" @default.
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- W4321380634 doi "https://doi.org/10.1590/s1519-994020220022" @default.
- W4321380634 hasPublicationYear "2023" @default.
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