不同飼養模式對種用畜試土雞藾菢性之影響

本研究目的在比較種母土雞飼養於改良式平飼與傳統平飼雞舍之繁殖性能差異，並瞭解傳統平飼藾菢土雞飼養於個別籠後，再產蛋所需時間。試驗雞隻係畜產試驗所育成之畜試土雞近親品系11號推廣族群母雞300隻及近親品系7號推廣族群公雞60隻，共計360隻。飼養於改良A式平飼雞舍（100隻母雞）、改良B式平飼雞舍（100隻母雞）及傳統平飼（100隻母雞），飼養密度為17隻／坪，以1：8公母比例混合飼養，採自然配種，均附有產蛋箱。改良A式平飼雞舍是將傳統平飼舍中增加個別籠，而改良B式平飼雞舍不同於改良A式平飼雞舍者，是將每個別籠均放一隻公雞以干擾母雞藾菢行為，利用每日撿蛋時觀察母雞藾菢情形，抓出藾菢母雞另飼養於個別籠，待其在個別籠產蛋後才放回平飼。試驗期間均予任食任飲，收集每日母雞死亡數目、隻日產蛋率5％至40週齡產蛋數和每週藾菢情形資料。試驗結果顯示，總產蛋數與產蛋率均以傳統平飼者顯著較低（P＜0.05），死亡率則以改良B式平飼雞舍較高，醒菢天數以傳統平飼顯著較長（P＜0.05）。在處理後回復產蛋所需天數及40週齡平均蛋重，各處理間則無顯著差異。

關鍵字

畜試土雞；藾菢；傳統平飼；改良式平飼

並列摘要

The purpose of this study was to investigate the effects of rearing styles on the interruption of broodiness in Taiwan native chicken breeders. A total of 360 Taiwan native chicken breeders (300 females and 60 males) were used in this experiment. The chickens with a male/female ratio of 1:8 were housed in three different floor pens with a density of 17 birds /3.3 m^2. Style A floor pen was installed with individual cages. Style B floor pen was installed with individual cages and with the inclusion of a rooster in each cage. Feed and water were provided ad libitum during the experimental period. The data on mortality and egg production of hens and broodiness of chicken under the three rearing styles were collected. The result showed that egg production of chicken in conventional floor pen was significantly lower than other treatments (P＜0.05). Hen' s mortality in style B floor pen was significantly higher than other treatments (P＜0.05). The days to cessation of broodiness for chickens in conventional floor pen were significantly longer than other treatments (P＜0.05). Egg weight at 40 weeks of age and days to resume laying were not significantly affected by the different styles of floor pens.

並列關鍵字

Broodiness ； Conventional floor pens ； Improved floor pens

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