文章詳目資料
中國畜牧學會會誌
加入收藏
下載文章
中文摘要
女羊有高度的生長養分需求，本試驗評估日糧蛋白質含量對女羊生長、養分消化 及血液性狀之影響。使用8 隻乳用種雜交女羊（39.7±6.2 公斤），限食餵給(乾物 質採食量，體重1.6%)低蛋白質（CP12 %，n＝4） 或高蛋白質（CP16 %，n＝4） 日糧（百慕達草稈：精＝1：1 ）。女羊依照體重逢機分配至處理組。試驗為期兩 個月，期間每日紀錄羊隻飲水量，並於試驗開始與結束量測羊隻體重，最後七天 收集羊隻全糞與全尿；最後一天上午飼餵前與飼餵後2 小時，進行頸靜脈採血。 結果顯示，羊隻飼餵高蛋白質的日糧，在日增重有較高的趨勢（P ＝0.07），中洗 纖維之消化率較高（P ＜ 0.05）；血液尿素氮提高（P ＜ 0.01），血液肌酸酐則 較低（P ＜ 0.01）。尿液尿素氮、可消化蛋白與滯留氮較高（P ＜ 0.05）。整體 而言，女羊餵飼高蛋白日糧，提高中洗纖維消化率與氮滯留，並有促進增重之趨 勢。
英文摘要
Goat does have a high nutrient demand for growth. This study evaluated effect of protein feeding level on doe performance. Eight crossbred dairy goat does (39.7±6.2 kg) were limited-fed (1.6% BW) a basal diet, low protein (CP12%, n=4) or high protein (CP16%, n=4) diet (bermudagrass straw : concentrate = 1 : 1). Does were assigned to treatments at random by body weight. The trail lasted for 2 months, with water intake recorded daily. The last seven days were for total collection of feces and urine. On the last day, jugular vein blood was withdrawn before (0 h) and 2 h after the morning feeding. The result showed that does on high protein diet tended (P = 0.07) to gain more. Total tract digestibility of neutral detergent fiber was increased (P < 0.05) with high protein feeding. Blood urea nitrogen was elevated (P < 0.01), but creatinine reduced (P < 0.01) when more protein was fed. Does given more protien resulted in higher (P < 0.05) digestible protein intake, urine urea N output, and retained N. Overall, goat does fed high protein diet showed some improvement in performance.