飼糧玉米乾酒粕含量對蛋雞之產蛋性能及雞蛋品質之影響

本試驗旨在探討飼糧中不同玉米乾酒粕（Distiller's Dried Grains with Soluble; DDGS）含量對蛋雞產蛋性能及蛋品質之影響。利用240隻22週齡來亨蛋雞，於產蛋期（22－42週齡）飼糧中分別添加0、6、12或18% DDGS，四組飼糧設計為等蛋白質（CP 15%）及等能量（ME 2,900 kcal/kg），各處理組三重複，每重複20隻。試驗期間飼料及飲水任食，並測定採食量、產蛋性能及雞蛋品質等。結果顯示，飼糧含18% DDGS時，蛋雞採食量、產蛋率及產蛋量顯著減少（P ＜ 0.05）；在蛋品質方面，蛋重與蛋比重各處理組之間相近；於30－42週齡時，添加DDGS 12%或以上可改善蛋殼重百分比（P ＜ 0.05），蛋殼強度及蛋殼厚度之改善僅在12－18% DDGS才具效果。蛋黃顏色之紅色度（a值）及亮度（L值）隨著飼糧DDGS含量的增加而明顯提高（P＜0.05），母雞採食12%或以上之DDGS飼糧會明顯提高黃色度（b值）（P＜0.05）。綜上所述，產蛋期來亨蛋雞餵飼含12%之DDGS飼糧，不會影響產蛋性能，但可改善蛋殼品質及蛋黃色澤。

關鍵字

玉米乾酒粕；產蛋性能；蛋品質

並列摘要

This experiment was conducted to study the effects of dietary levels of Distiller's Dried Grains with Solubles (DDGS) on the laying performance and egg quality of layer during the laying period. A total of two hundred and forty Leghorn layers at 22 weeks of age were randomly assigned to 4 groups. Each group of hens had three replicates with 20 layers. The hens fed the diets containing 0, 6, 12 or 18% DDGS, respectively. All experimental diets contained ME 2,900 kcal/kg and CP 15%. Feed and water were supplied ad libitum. The feed intake, laying performance and egg quality were measured during the experimental period (23 - 42 weeks of age). The results indicated that hens fed 18% DDGS had significantly (P ＜ 0.05) lower feed intake, hen-day production and egg mass compared with the other treatments. Moreover, dietary DDGS treatments did not affect the egg weight and egg specific gravity. There was significantly (P ＜ 0.05) higher shell percentage when layer fed with 12% and 18% DDGS content in diets, however, the 12 - 18% DDGS groups had significantly (P ＜ 0.05) better egg breaking strength and thickness during 30 - 42 weeks of feeding period. The brightness (L value) and red chromaticity (a value) of yolk were significantly (P ＜ 0.05) higher when dietary DDGS levels were increased. High yellow chromaticity (b value) of yolk was found by the 12% or higher DDGS content in diet. In conclusion, a 12% and lower levels of DDGS supplementation did not affect the laying performance and egg quality, nevertheless it can improve the shell quality and color of yolk.

並列關鍵字

Distiller's dried grains with soluble ； Laying performance ； Egg quality

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