環境溫度對褐色菜鴨生產性能之影響

本試驗旨在測定褐色菜鴨飼養於不同環境溫度下對生產性能之影響。共156隻39週齡菜鴨飼養於環境控制室之個別籠，環境溫度分別設定為12℃、22℃及32℃，相對溼度皆為80－85%，每日光照16小時，粒狀飼料及飲水採任飼，在9週試驗期間，收集各處理組鴨隻之體重、產蛋率、飼料採食量、蛋重、及飼料轉換率。結果顯示，32℃處理組之鴨隻體重顯著較12℃及22℃處理組者為輕，且32℃處理組之產蛋率、蛋重較其它兩組為低。32℃處理組之鴨隻飼料採食量亦較其它兩處理組者為低，且12℃處理組之飼料採食量略較22℃處理組者為高。在試驗期的前三週，12℃處理組之飼料轉換率顯著較22℃及32℃處理組者為差，但在第5週後則各處理組間沒有顯著差異。無論12℃或32℃處理皆對褐色菜鴨之生產性能產生負面影響，然以32℃處理之衝擊較為明顯。

關鍵字

環境溫度；褐色菜鴨；生產性能

並列摘要

The objectives of this study were to investigate the effects of ambient temperature on the productive performances of Tsaiya ducks raised in the artificial climate chamber. A total of 156 ducks were moved to the individual cages in the artificial climate chambers. This study began when ducks were at 39 weeks of age and lasted for 9 weeks. The temperature in the artificial climate chamber was set up at 12ºC (low temperature, LT), 22ºC (middle temperature, MT) and 32ºC (high temperature, HT), respectively. Relative humidity ranged at 80-85% for all treatments. Ducks were exposed to a photoperiod of 16L: 8D and feed and water were provided ad libitum. Body weight, egg production, egg weight and feed intake data were collected. The results showed that HT ducks had lower body weights, egg production and egg weights than those of LT and MT ducks. The HT ducks also had lower feed intake than those in other two groups; and LT ducks had to some degree higher feed intake than that of MT ducks. In the first three weeks of this study, the LT ducks had higher feed conversion ratio (FCR) than the MT and HT ducks. However, feed conversion ratio was similar among treatments after the 5th week. Adverse effects were observed in the ducks exposed to both HT and LT, however, it appeared that ducks were more susceptible to HT than to LT.

並列關鍵字

Ambient temperature ； Brown Tsaiya duck ； Productive performance

國際替代計量

環境溫度對褐色菜鴨生產性能之影響

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