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題 名 | 不同代謝能及蛋白質含量實用飼糧對4~8週齡烏骨雞生長性狀之影響=Effect of the Practical Diets with Three Levels of Protein and Two Levels of Energy on the Growth Performance of Silky Chickens during 4~8 Weeks of Age |
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作 者 | 林義福; 劉曉龍; 洪哲明; 鄭裕信; 謝昭賢; | 書刊名 | 畜產研究 |
卷 期 | 44:3 2011.09[民100.09] |
頁 次 | 頁197-204 |
分類號 | 437.714 |
關鍵詞 | 土雞; 代謝能; 蛋白質; 生長性狀; Silky chicken; Metabolizable energy; Protein; Growth performance; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗旨在探討不同代謝能及蛋白質含量實用飼糧配方對烏骨雞4-8 週齡生長性狀之影響。以本所育成之1 日齡烏骨雞360 隻為試驗動物,以一般實用飼糧飼養至4 週齡後,逢機分成6 組,每組三重複分飼於三欄,每欄20 隻雞( 公母各半)。飼糧以玉米- 大豆粕為主,採3×2 複因子試驗,調配含粗蛋白質17、19、21%,代謝能2,800、3,000 kcal/kg,共6 種組合飼糧,水及飼糧任食,分別於第4、6 及8 週齡測量體重、飼料採食量、飼料轉換率(F/G),並採血測定血液性狀,以評估4-8 週齡烏骨雞最佳生長之能量、蛋白質需要量。結果顯示,6 週齡平均體重各組間無顯著差異,8 週齡平均體重以CP 19% 及21%組合ME 3,000 kcal/kg 之二處理組較高,並與CP 17%、ME 3,000 kcal/kg 之處理組有顯著差異 (P < 0.05);4-8週平均增重以CP 21% 組合ME 3,000 kcal/kg 之處理組最高,並與CP 17% 組合ME 3,000 kcal/kg 之處理組 有顯著差異(P < 0.05);4-8 週飼料轉換率(F/G) 以CP 21% 組合ME 3,000 kcal/kg 之處理組最佳(3.25),CP19% 組合ME 2,800 kcal/kg 之處理組最差(3.73),並呈現顯著差異(P < 0.05)。主效應分析顯示,飼糧蛋白質含量或代謝能含量對平均體重並無顯著影響;4-6 週齡增重,含粗蛋白質17% 之處理組較含粗蛋白質21% 者高(P < 0.05),但6-8 週齡增重,含粗蛋白質19 及21% 之處理組較含粗蛋白質17% 者高(P < 0.05),全期以含粗蛋白質21% 者增重最高,含粗蛋白質17% 者最低,但無顯著差異;代謝能對體重或增重均無顯著影響,蛋白質與代謝能對增重有顯著交感效應存在(P < 0.05)。血液性狀顯示,血液尿酸濃度以含粗蛋白質19%、代謝能2,800 kcal/kg 之處理組最高,粗蛋白質17%、代謝能3,000 kcal/kg 之處理組最低(P< 0.05),血液三酸甘油酯濃度以含粗蛋白質19%,代謝能3,000 kcal/kg 之處理組最高,粗蛋白質17%、代謝能3,000 kcal/kg 之處理組最低(P < 0.05),但兩者間無交感效應存在。綜合以上結果,4-8 週齡烏骨雞達最佳生長之蛋白質需要量為21%,代謝能為3,000 kcal/kg。 |
英文摘要 | The purpose of this experiment was to evaluate the metabolizable energy(ME) and protein requirement of silky chickens during growing period at 4-8 weeks of age. A total of 360 day-old black silky chicks from Livestock Research Institute (LRI) were divided into 6 groups. Each group had 60 birds which were allocated into 3 pens (3 replicates) with half males and half females. The experiment was conducted as 3×2 factorial design. The cornsoybean diets were formulated to the levels of 17, 19 and 21% crude protein (CP) and 2,800 and 3,000 kcal/kg metabolizable energy (ME). Water and feed were fed ad libitum. Body weight, feed intake were recorded at 6 and 8 weeks of age. Blood were sampled for plasma characteristic analysis. Energy and protein requirements for best growth performance of silky chicks during growing period at 4-8 weeks of age were evaluated. The results showed that no significant difference on average body weight was found among treatments at 6 weeks of age. Provision of diets containing 19% and 21% CP with 3,000 kcal/kg ME had significantly higher (P < 0.05) average body weight than that with CP 17% and ME 3,000 kcal/kg at 8 weeks of age. Diet with CP 21% and ME 3,000 kcal/kg had significantly higher average weight gain than that with CP17% and ME 3,000 kcal/kg (P < 0.05) during 4-8 weeks of age. Diet with CP 21% and ME 3,000 kcal/kg had the best feed efficiency (3.25) and that with CP 19% and ME 2,800 kcal/kg was the worst (3.73) (P < 0.05). The dietary CP did not significantly affect average body weight. Diet with CP 17% had higher weight gain than that with CP 21% (P < 0.05) during 4-6 weeks of age. Diet with CP 19 and 21% had higher weight gain than that with CP 17% (P < 0.05) during 6-8 weeks of age. Diet with 23% CP was higher than that with 21% and 19% CP (P < 0.05). Diet with 21% CP had the highest weight gain and that with 17% had the lowest during 4-8 weeks of age. ME had no significant effect on body weight or weight gain. Significant interaction effect between CP and ME was found on the weight gain (P < 0.05). The blood characteristics showed that uric acid content was highest in chickens fed diets containing 19% CP with 2,800 kcal/kg ME and lowest in diets containing 17% CP with 3,000 kcal/kg ME (P < 0.05) . Triglyceride content was highest in chickens fed diets containing 19% CP with 3,000 kcal/kg ME and lowest in diets containing 17% CP with 3,000 kcal/kg ME (P < 0.05). No interaction was found between CP and ME. The conclusion showed that the protein and energy requirement for growth performance of silky chicken during 4-8 weeks of age were 21% and 3,000 kcal/kg, respectively. |
本系統中英文摘要資訊取自各篇刊載內容。