飼糧中添加不同比例之魚粉對菜鴨產蛋性能及蛋中EPA與DHA含量之影響

本試驗之目的在探討飼糧中添加不同比例之魚粉對菜鴨產蛋性能及蛋中二十碳五烯酸（EPA）與二十二碳六烯酸（DHA）含量之影響。以50週齡褐色菜鴨進行試驗，餵給玉米─大豆粕為主之飼糧，共為四個處理組，分別添加魚粉0%、2%、4%、6%，各處理組飼糧之粗蛋白質均為18.7%，代謝能2800 kcal/kg；每處理3重複，每重複15隻，進行為期10週之試驗。試驗期間測定產蛋率、蛋重、蛋殼強度、飼料換蛋率、分析蛋黃脂肪酸組成及試驗結束時測定蛋感官評級。試驗結果顯示，4%與6%魚粉添加組的飼料換蛋率皆為3.33，顯著地較0%及2%魚粉添加組之3.76與3.70為佳；隨著日糧中魚粉添加量之增加，蛋黃的EPA及DHA含量均隨之提高；產蛋率及感官評級則各組間無顯著差異。

關鍵字

褐色菜鴨；魚粉；產蛋性能；感官評級

並列摘要

This study was conducted to evaluate the effects of dietary fishmeal supplementation on the laying performance in Tsaiya ducks and EPA and DHA contents in the duck eggs. Tsaiya ducks at 50 weeks of age were employed. Corn-soybean basal diets were fed (CP 18.7% and ME 2800 kcal/kg). There were four treatments in this study: (1) 0% fishmeal, (2) 2% fishmeal, (3) 4% fishmeal, and (4) 6% fishmeal. There were three replicates in each treatment with 15 ducks per replicate. The experimental period lasted 10 weeks. Egg production, egg weight, eggshell strength, feed/egg conversion ratio, egg yolk fatty acid composition and sensory evaluation scores for the eggs were measured. The feed/egg conversion ratio in the 4% and 6% fishmeal treatments was 3.33. This was significantly better than 3.76 and 3.70 in the 0% and 2%treatment groups, respectively. The EPA and DHA contents in the egg yolk increased with fishmeal addition. The egg production and sensory evaluation were not different among treatments.

並列關鍵字

Brown Tsaiya duck ； Fishmeal ； Laying performance ； Sensory evaluation

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