兩種飼養密度之友善平飼系統與巴達利籠飼對蛋雞腳部健康及羽毛損壞之影響

本計畫旨在探討蛋雞在不同平飼飼養密度與傳統籠飼環境下，羽毛損壞行為及腳部健康兩項福祉指標之差別。試驗採用150隻伊莎（ISA）蛋雞，在28週齡前皆為平飼，至28週齡後逢機分為A組、B組、C組，其中A、B兩組皆為平飼組，惟其每隻雞飼養空間分別為2.8m^2與1.4m^2，而C組則為巴達利式雞籠對照組。試驗期間雞隻為28－58週齡，每10週量測各組體重、記錄足墊皮膚炎、腳踝紅腫、持續站立時間之評分以及記錄每日產蛋。結果顯示，各組蛋雞在58週齡時，皆無腳踝紅腫發生，足墊皮膚炎的百分比分別為31%及、7%及0%，持續站立時間平均皆超過800秒，雞隻羽毛損壞百分比分別為10%、8%及41%，產蛋率分別為85%、79%及75%，除持續站立時間之外，足墊皮膚炎、羽毛損壞以及產蛋率於組間皆有顯著差異（P ＜ 0.05）。綜觀來看，友善平飼系統若地面管理不良，縱使給予足夠空間，仍會有足墊皮膚炎之福祉問題。

關鍵字

平飼；動物福祉；足墊皮膚炎；友善飼養；蛋雞

並列摘要

The aim of this research was conducted to investigate differences of two welfare indicators of laying hens, including the feather damage and leg health, under floor housing with two different stocking densities and conventional cage system. A total of 150 ISA laying hens were randomly allocated into three groups. Chickens in group A and B were housed in floor pans with the low and high stocking densities (2.8 m^2/bird and 1.4 m^2/bird). Chickens in group C was kept in single-bird battery cages. The study period was from 28 to 58 weeks of age and egg production was recorded daily. The scores of foot pad dermatitis (FPD), hock burn (HB) and duration of standing (DS) were measured every 10 weeks. The results showed that no chickens displayed the HB at the age of 58 weeks. Moreover, the percentage of FPD were 31%, 17% and 0% in group A, B and C, respectively. All hens from 3 groups can stand over 800 seconds in the test of DS. The percentages of feather damage were 10%, 8% and 41% in group A, B and C, respectively. The percentages of egg production of each group were 85%, 79% and 75% and showed significant differences (P ＜ 0.05) among groups. In conclusion, friendly barnyard system, even with plenty of space, without proper litter floor management, could have a welfare problem of foot pad dermatitis.

並列關鍵字

Floor rearing ； Animal welfare ； Foot pad dermatitis ； Friendly feeding ； Laying hens

國際替代計量

兩種飼養密度之友善平飼系統與巴達利籠飼對蛋雞腳部健康及羽毛損壞之影響

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