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頁籤選單縮合
題 名 | Effects of Increasing Dietary Nutrient Density on Improving Feed Efficiency and Nitrogen Excretion of Pigs=提高飼料營養濃度對改善肉豬飼料利用效率與氮排出量的影響 |
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作 者 | 游義德; 吳繼芳; 林志勳; 許晉賓; | 書刊名 | 中華農學會報 |
卷 期 | 184 1998.12[民87.12] |
頁 次 | 頁24-33 |
分類號 | 437.11 |
關鍵詞 | 高濃度飼料; 飼料利用效率; 氮排出量; 肉豬; High nutrient diet; Feed efficiency; Nitrogen excretion; Hog; |
語 文 | 英文(English) |
中文摘要 | 試驗以生長與代謝試驗二部分進行。生長試驗採用體重20Kg三品種 雜交豬40頭逢機分配於四個處理組中,處理一為以玉米一大豆粕為基礎之飼料 作為對照組,其生長與肥育期飼料之粗蛋白質分別為17.2與14.9%,消化能分 別為3420與3436kcal/kg,總離胺酸分別為0.85與0.75%(可消化離胺酸0.70與 0.57%)。處理二為低蛋白質組(12.5%),再根據Wang and Fuller (1990)建議之理 想蛋白質胺基酸平衡比例添加合成必需胺基酸,其可消化離胺酸、消化能和其 他養分與對照組相同。處理三、四為高濃度飼料組,提高飼料營養濃度約為處 理二之1.3倍,但每日飼料餵量則除以1.3倍給予,使四處理組每日營養分攝取 量均儘可能相同。代謝試驗則採用體重40Kg三品種雜交女豬15頭,逢機分配 於五個試驗處理組中,其中處理一至四與生長試驗相同,而處理五採用Chung and Baker(1992)胺基酸平衡比例調整胺基酸組成,其餘營養濃度儘量與處理三相同。 試驗結果顯示,生長試驗(體重20-95Kg)之飼料/增重第一組至第四組分別 為3.19、3.20、2.79與2.82(p<0.01)。每日增重分別為646、642、574與559g (p<0.01)。代謝試驗結果處理一至五之每日糞氮排出量分別為6.09、5.28、4.94、 4.60與5.56g(p>0.05),每日尿氮排出量分別為18.31、11.58、10.96、13.38與9.83g (p<0.01),每日氮蓄積分別為27.48、19.35、21.35、19.21與21.74g (p<0.01)。 本試驗結果顯示,提高飼料營養濃度至1.3倍,但降低粗蛋白質用量,再補充 合成必需胺基酸,與降低餵量使每日營養分攝取量(粗蛋白質除外)相似的情況 下,可顯著改善飼料利用效率、尿氮排出量,但豬隻之每日增重變差。 |
英文摘要 | Growth and metabolism trials were adopted in this experiment. In growth trial, 40 cross-bred pigs (avg. 20kg) were randomly assigned to four treatments: (1) diet based on corn-soybean meal as a control group, with the crude protein content (%), digestible energy (Kcal/Kg), total lysine (%), and digestible lysine (%) in growing and finishing periods at 17.2 and 14.9, 3420 and 3436, 0.85 and 0.75, and 0.70 and 0.57, respectively; (2) low protein diet, with the crude protein at 12.5% and supplemented with synthetic amino acids according to ideal protein pattern recommended by Wang and Fuller except for the tryptophan/lysine ratio referred to in Yu with the ratio at 0.23, the other nutrients were the same as in control group; (3) high nutrient diet, based on corn-soybean meal with its nutrient density 1.3 times that of treatment 2; and (4) high nutrient diet based on corn- soy protein concentrate diet, with a nutrient density 1.3 times that of treatment 2. The feed intake of pigs in treatments 3 and 4 was divided by 1.3 so as to keep daily nutrition intake of all pigs similar. In metabolism trial, fifteen three-way cross bred gilts (avg. 40 kg) were randomly allotted into five treatments, with treatments 1 to 4 the same as above, but treatment 5 was the same as treatment 3 except for the ideal protein pattern referred to in Chung and Baker . The results showed that feed/gain of four treatments in growing trial (20-95kg) was 3.19, 3.20, 2.79, and 2.82 (p<0.01), respectively. Daily gain was 646, 642, 574, and 559g (p<0.01), respectively. In metabolism trial , fecal nitrogen excretion of treatments 1 to 5 was 6.07, 5.28, 4.94, 4.60, and 5.56 g/d (p>0.05), respectively. Urinal nitrogen excretion was 18.31, 11.58, 10.96, 13.38, and 9.83 g/d (p<0.01), respectively. Nitrogen retention was 27.48, 19.35, 21.36, 19.21, and 21.47 g/d (p<0.01), respectively. In conclusion, increasing nutrient density (protein exclusive) of diet to 1.3 times of control diet by lowering crude protein content and supplementing with synthetic amino acids, then decreasing feed intake to make pigs' daily nutrition intake, similar can improve feed/gain ratio and lower urinal nitrogen excretion; but, pigs' growth rate is reduced. |
本系統中英文摘要資訊取自各篇刊載內容。